Including Original "Paul H. Letters" Copyright © 1996-2017 Paul V. Heinrich - All rights reserved.



Sunday, 25 December 2016

Two New Papers About Younger Dryas Impact Hypothesis

Two New Papers About Younger Dryas Impact Hypothesis

There are two new papers about the Younger Dryas
Impact Hypotheses

Studies refute hypothesis on what caused abrupt climate
change thousands of years ago, ScienceDaily, December 19, 2016
https://source.wustl.edu/2016/12/case-missing-diamonds/
https://www.sciencedaily.com/releases/2016/12/161219115304.htm

Missing Diamonds Don't Support Case for Younger Dryas
Impact, Washington University in St. Louis, Dec. 20, 2016
http://spaceref.com/news/viewpr.html?pid=50132

The papers are:

Daulton, T. L., S. Amari, A. C. Scott, M. Hardiman, N. Pinter, and
R. S. Anderson, 2016, Comprehensive analysis of nanodiamond
evidence relating to the Younger Dryas Impact Hypothesis.
Journal of Quaternary Science, Early View, First published:
19 December 2016, DOI: 10.1002/jqs.2892
http://onlinelibrary.wiley.com/doi/10.1002/jqs.2892/abstract
http://onlinelibrary.wiley.com/store/10.1002/jqs.2892/asset/jqs2892.pdf

Scott, A. C., M. Hardiman, N. Pinter, S. Anderson, T. L. Daulton,
A. Ejarque, P. Finch, and A. Carter-Champion, 2016, Interpreting
palaeofire evidence from fluvial sediments : a case study from
Santa Rosa Island, California with implications for the Younger
Dryas Impact Hypothesis. Journal of Quaternary Science.
First published: 19 December 2016, DOI: 10.1002/jqs.2914
http://onlinelibrary.wiley.com/doi/10.1002/jqs.2914/abstract
http://onlinelibrary.wiley.com/doi/10.1002/jqs.2914/epdf

Yours,

Paul H.

Friday, 16 December 2016

Big Diamonds Bring Scientists A Message From Superdeep Earth

Big Diamonds Bring Scientists A Message From Superdeep Earth

Big Diamonds Bring Scientists A Message From Superdeep Earth
NPR
http://www.npr.org/sections/thetwo-way/2016/12/15/505386423/big-diamonds-bring-scientists-a-message-from-superdeep-earth

Large, rare diamonds offer window into inner workings of Earth's mantle
https://www.eurekalert.org/pub_releases/2016-12/gioa-lrd120716.php
http://phys.org/news/2016-12-biggest-diamonds-deep-mantle-metallic.html
http://www.livescience.com/57222-biggest-diamonds-form-in-liquid-metal-pools.html

Diamonds: Huge, rare precious stones form 750km underground in
Earth's mantle, International Business Times UK
http://www.ibtimes.co.uk/huge-rare-diamonds-are-born-pools-liquid-metal-deep-below-earths-surface-1596725

the paper is:

Smith, E. M., S. B. Shirey, F. Nestola, and others, 2016, Large gem
diamonds from metallic liquid in Earth’s deep mantle. Science.
Vol. 354, Issue 6318, pp. 1403-1405. DOI: 10.1126/science.aal1303
http://science.sciencemag.org/content/354/6318/1403

Yours,

Paul H.

Thursday, 24 November 2016

Digitate Opaline Silica Structures (Biosignatures ?) Found on Mars

Digitate Opaline Silica Structures (Biosignatures ?) Found on Mars

Scientists Think They Finally Found Evidence of Ancient Life on Mars. by Sage Lazzaro, Observer
http://observer.com/2016/11/scientists-think-they-finally-found-evidence-of-ancient-life-on-mars/

The paper is:

Ruff, S. W., and J. D. Farmer, 2016, Silica deposits on Mars with features resembling hot spring biosignatures at El Tatio in Chile. Nature Communications 7, Article number: 13554 (2016) doi:10.1038/ncomms13554 Received: 14 April 2016, Accepted: 13 October 2016 Published online: 17 November 2016
http://www.nature.com/articles/ncomms13554

Yours,

Paul H.

Wednesday, 23 November 2016

Review of Recent Younger Dryas Impact Hypothesis Podcast

Review of Recent Younger Dryas Impact Hypothesis Podcast

For a review by Jason Colavito of Graham Hancock's latest comments about the Younger Dryas Impact Hypothesis, look at:

Graham Hancock Appears on Joe Rogan Podcast and Spends Three and Half Hours Bashing Skeptics by Jason Colavito
http://www.jasoncolavito.com/blog/graham-hancock-appears-on-joe-rogan-podcast-and-spends-three-and-half-hours-bashing-skeptics

Yours,

Paul H.

Saturday, 19 November 2016

Origin of Alleged Impact Tsunami Chevrons Re-examined

Origin of Alleged Impact Tsunami Chevrons Re-examined

The Mystery of Chevrons Revealed
American Geophysical Union (AGU) Talk
2014 Fall Meeting, Section: Natural Hazards
https://www.youtube.com/watch?v=JnjfhhdnAzk

Related links:

Michaela Spiske
https://independent.academia.edu/MichaelaSpiske

Garcia Garcia, A-M.., Spiske, M., Tsukamoto, S., and
Schmidt, V., 2012, Sedimentology of coastal chevron
deposits – tsunamigenic versus aeolian origin. American
Geophysical Union, Fall Meeting 2012, abstract #OS33B-1821
http://adsabs.harvard.edu/abs/2012AGUFMOS33B1821G

Spiske, M., Garcia Garcia, A-M., Tsukamoto, S., and
Schmidt, V., 2013, Coastal chevron deposits –
sedimentology, methods and aeolian versus tsunamigenic
origin. Geophysical Research. Abstracts. vol. 15,
EGU2013-2892, EGU General Assembly 2013
https://www.academia.edu/28071876/Coastal_chevron_deposits_-_sedimentology_methods_and_aeolian_versus_tsunamigenic_origin

Yours,

Paul.

Friday, 18 November 2016

Drill Cores Reveal How Peak Rings of Chicxulub Crater Formed

Drill Cores Reveal How Peak Rings of Chicxulub Crater Formed

Update: Drilling of dinosaur-killing impact crater explains
buried circular hills by Eric Hand, Science News, Nov. 17, 2016
http://www.sciencemag.org/news/2016/11/update-drilling-dinosaur-killing-impact-crater-explains-buried-circular-hills

Wendel, J., 2016, Cores from crater tied to dinosaur demise
validate impact theory, Eos, 97, doi:10.1029/2016EO063123.
Published on 17 November 2016.
https://eos.org/articles/cores-crater-tied-dinosaur-demise-validate-impact-theory

the paper is:

Morgan, J. V., S. P. S. Gulick, and many others, 2016, The
formation of peak rings in large impact craters. vol. 354,
no. 6314, pp. 878-882 DOI: 10.1126/science.aah6561
http://science.sciencemag.org/content/354/6314/878

Yours,

Paul H.

Lunar impact: how the Moon’s Mare Orientale was formed

Lunar impact: how the Moon’s Mare Orientale was formed

Subsurface map of moon reveals origin of mysterious impact
crater rings by Paul Voosen, Science News, Oct. 27, 2016
http://www.sciencemag.org/news/2016/10/subsurface-map-moon-reveals-origin-mysterious-impact-crater-rings

Lunar impact: how the Moon’s Mare Orientale was formed
Astronomy Now, October 29, 2016
https://astronomynow.com/2016/10/29/lunar-impact-how-the-moons-mare-orientale-was-formed/

Insights into giant impacts on moon, Earth and Mars NASA/Jet
Propulsion Laboratory, Brown university, October 27, 2016
http://www.nasa.gov/feature/jpl/nasa-moon-mission-shares-insights-into-giant-impacts/
https://solarsystem.nasa.gov/news/2016/10/27/nasa-moon-mission-shares-insights-into-giant-impacts
https://www.sciencedaily.com/releases/2016/10/161027141000.htm
https://www.sciencedaily.com/releases/2016/10/161027142654.htm

The paper is:

Zuber, M. T., D. E. Smith, and many others, 2016, Gravity field
of the Orientale basin from the Gravity Recovery and Interior
Laboratory Mission. Science. vol. 354, no. 6311, pp. 438-441
DOI: 10.1126/science.aag0519
http://science.sciencemag.org/content/354/6311/438

Yours,

Paul H.

Sunday, 13 November 2016

Beaverhead Impact Structure Publications

Beaverhead Impact Structure Publications

McCafferty, 1995, A. E., Assessing the presence of a buried meteor impact crater using geophysical data, south-central Idaho Thesis, Colorado School of Mines. 1995.
https://dspace.library.colostate.edu/handle/11124/170341
https://dspace.library.colostate.edu/handle/11124/170341?show=full
https://dspace.library.colostate.edu/bitstream/handle/11124/170341/T4651.pdf?sequence=1&isAllowed=y

Carr, J., and Link, P.K., 1999, Neoproterozoic conglomerate and breccia in the formation of Leaton Gulch, Grouse Peak, northern Lost River Range, Idaho: Relation to Beaverhead Impact Structure,
in Hughes, S.S., and Thackray, G.D., eds., Guidebook to the Geology of Eastern Idaho: Pocatello, Idaho Museum of Natural History, p. 21-29
http://imnh.isu.edu/digitalatlas/geo/gsa/gsafrm.htm

Yours,

Paul H.

Meteorites reveal lasting drought on Mars

Meteorites reveal lasting drought on Mars

Mars' Mega-Drought Revealed in Meteorite Rust 
NASA's Mars rover Opportunity has been used to measure the weathering of meteorites on the Red Planet, revealing just how little water there is on the surface. Space, November 11, 2016
http://www.seeker.com/mars-meteorite-water-opportunity-rover-habitability-astrobiology-2089821823.html

http://www.natureworldnews.com/articles/31680/20161112/meteorites-mars-suggest-super-drought-wiped-out-alien-life.htm

The paper is:
Schröder, C., P. A. Bland, M. P. Golombek, J. W. Ashley, N. H. Warner, and J. A. Grant, 2016a, Amazonian chemical weathering rate derived from stony meteorite finds at Meridiani Planum on Mars. Nature Communications, 2016; 7: 13459 DOI: 10.1038/ncomms13459
http://www.nature.com/articles/ncomms13459
Schröder, C., P. A. Bland, M. P. Golombek, J. W. Ashley, N. H. Warner, and J. A. Grant, 2016b, Late-Amazonian chemical weathering rate for Meridiani Planum, Mars, derived from candidate stony meteorite finds. 79th Annual Meeting of the Meteoritical Society (2016)
http://www.hou.usra.edu/meetings/lpsc2015/eposter/2354.pdf
http://www.hou.usra.edu/meetings/metsoc2016/pdf/6529.pdf
Schröder, C., P. and others, nd, Properties and distribution of paired candidate stony meteorites at Meridiani Planum, Mars
https://home.dtm.ciw.edu/users/lrn/preprints/schroeder2010.pdf
Yours,
Paul H.

Friday, 28 October 2016

End-Permian Mass Extinction Reexamined

End-Permian Mass Extinction Reexamined

End-Permian mass extinction was not so massive
By Belinda Smith, Cosmos Magazine
https://cosmosmagazine.com/palaeontology/mass-extinctions-were-not-so-massive-study

US paleontologists states once the dust settled
following the 'great dying' around 250 million
years ago, nearly 20% of species remained – not
4%. Belinda Smith reports.

Paleontologist suggests 'great dying' 252 million
years ago wasn't as bad as thought, October 4, 2016
http://phys.org/news/2016-10-paleontologist-great-dying-million-years.html

The paper is:

Stanley, S. M., 2016, Estimates of the magnitudes
of major marine mass extinctions in earth history.
Proceedings of the National Academy of Sciences,
US, vol. 113 no. 42 E6325-E6334
http://www.pnas.org/content/113/42/E6325

Yours,


Paul H.

Friday, 21 October 2016

NASA’s Plan to Hunt for Fossils on Mars

NASA’s Plan to Hunt for Fossils on Mars

NASA's Amazing 2020 Mars Mission to Search for
Ancient Fossils --"Unlike Earth, Mars is a Beautifully
Preserved Fossil" The Daily Galaxy, ‎October 19, 2016‎
http://www.dailygalaxy.com/my_weblog/2016/10/nasas-amazing-2020-mars-mission-to-search-for-ancient-fossils-unlike-earth-mars-is-a-beautifully-pre.html

NASA’s Bold Plan to Hunt for Fossils on Mars
National Geographic, October 17, 2016
http://news.nationalgeographic.com/2016/10/alien-fossils-nasa-exploring-mars-2020-space-science/

NASA Plans To Search For Martians: Where Will They
Begin The Hunt? Science World Report, Oct. 18, 2016‎
http://www.scienceworldreport.com/articles/50281/20161018/nasa-plans-search-martians-where-will-begin-hunt.htm

Yours,

Paul H.

Sunday, 16 October 2016

Article on Hypothesized Scottish Precambrian Impact Crater

Article on Hypothesized Scottish Precambrian Impact Crater

Massive crater under small Scottish town could be the crash site of the first meteorite to hit the British Isles
Thought to be under the small town of Lairg, northern Scotland, it be one of the 15 largest known craters.
By Press Association and Libby Plummer, Mail Online, September 21, 2016
http://www.dailymail.co.uk/sciencetech/article-3800595/Massive-crater-small-Scottish-town-crash-site-meteorite-hit-British-Isles.html

It is certainly not the "first" meteorite impact in British Isles, as there undoubtedly have been older ones.
Instead, it might be simply the oldest known impact in the British Isles. (Presuming that older impacts certainly have occurred and not be either preserved of found.) Like all news articles, some of the substance of the science has gotten either lost or misinterpreted in translation to lay English.

An interesting observation is that the impact crater lies on a piece of crust composed of  Lewisian Gneiss that was part of Rodina. At the time that impact occurred, Rodina was being rifted apart to form Laurentia (prehistoric North America). This piece of crust ended up as part of the Laurentian continental margin. It was this rifting that created active rift basins, in which the Stoer and Sleat Groups accumulated and the ejecta blanket was buried and preserved. Thus, at the time the impact occurred, it hit within what became
prehistoric North America and only much later ended up on the opposite side of the Atlantic.

A recent abstract is:

Simms, M. J., 2016, A Buried Impact Crater in Scotland. 79th Annual Meeting of the Meteoritical Society (2016) abstract no. 6090.
http://www.hou.usra.edu/meetings/metsoc2016/pdf/6090.pdf

An older paper is:

Simms, M. J., 2015, The Stac Fada impact ejecta deposit and the Lairg Gravity Low: evidence for a buried Precambrian impact crater in Scotland? Proceedings of the Geologists’ Association. vol. 126, pp. 742–761

Friday, 14 October 2016

Comet Strike May Have Triggered the Paleocene-Eocene Thermal Maximum (PETM)

Comet Strike May Have Triggered the Paleocene-Eocene Thermal Maximum (PETM)

Extraterrestrial Impact Preceded Ancient Global Warming Event
By Mary L. Martialay, Rensselaer Polytechnic Institute, October 13, 2016
http://news.rpi.edu/content/2016/10/13/extraterrestrial-impact-preceded-ancient-global-warming-event

Ancient Meteorite Impact Rained Debris On US East Coast
By Calla Cofield, Space.com Staff Writer | October 13, 2016 05:46pm ET
http://www.space.com/34384-ancient-meteorite-impact-hit-us-east-coast.html

Yours,

Paul H.

Chicxulub Impact Crater Investigation Begins in Earnest

Chicxulub Impact Crater Investigation Begins in Earnest

Chicxulub 'dinosaur crater' investigation begins in earnest
by Jonathan Amos, BBC News, October 11, 2016
http://www.bbc.com/news/science-environment-37625348

Yours,

Paul H.






Annual Moon Impacts More Frequent Then Previously Estimated

Annual Moon Impacts More Frequent Then Previously Estimated

The moon has hundreds more craters than we thought
Daily News, October 12, 2016
https://www.newscientist.com/article/2108929-the-moon-has-hundreds-more-craters-than-we-thought/

How old is our Moon? Hundreds of previously unseen
craters could finally unlock its true age: New estimates
suggest 180 craters of at least ten metres in diameter
form each year by Liat Clark, Wired,

A facelift for the Moon every 81,000 years, October 12, 2016
http://phys.org/news/2016-10-facelift-moon-years.html
http://phys.org/news/2016-10-reveals-lunar-surface-features-younger.html

The paper is:

Speyerer, E. J., R. Z. Povilaitis, M. S. Robinson, P. C. Thomas,
And R. V. Wagner, 2016, Quantifying crater production
and regolith overturn on the Moon with temporal imaging.
Nature. Vol. 538, pp. 215–218 (13 October 2016) doi:10.1038/nature19829
http://nature.com/articles/doi:10.1038/nature19829

Yours,

Paul H.

No, the Rock You Found Is Not a Meteorite

No, the Rock You Found Is Not a Meteorite

Scientists: No, the Rock You Found Is Not a Meteorite
Thousands of space rock fans want to verify their meteorwrongs; ‘I don’t chat’ The wall Street Journal
http://www.wsj.com/articles/scientists-no-the-rock-you-found-is-not-a-meteorite-1473948988

Yours,

Paul H.

Thursday, 6 October 2016

Impact Origin of Paleocene-Eocene Thermal Maximum (PETM) ?

Impact Origin of Paleocene-Eocene Thermal Maximum (PETM) ?

Glass bits, charcoal hint at 56-million-year-old space rock Impact. Timing coincides with period of rapid warming perhaps sparked by comet, Thomas Summer, Science News.
https://www.sciencenews.org/article/glass-bits-charcoal-hint-56-million-year-old-space-rock-impact

Schaller, M.F., and others, 2016, Distal impact ejecta at Paleocene-Eocene boundary sections on the Atlantic Margin. Geological Society of America annual meeting, Denver, September 27, 2016. Geological Society of America Abstracts with Programs. Vol. 48, No. 7.
https://gsa.confex.com/gsa/2016AM/webprogram/Paper286189.html
https://gsa.confex.com/gsa/2016AM/webprogram/Session40161.html

Fung, M.K., and others, 2016, Widespread wildfires at the Paleocene Eocene boundary: Evidence from abundant charcoal preserved in the thick Marlboro Clay. Geological Society of America annual meeting, Denver, September 27, 2016. Geological Society of America Abstracts with Programs. Vol. 48, No. 7
https://gsa.confex.com/gsa/2016AM/webprogram/Paper284983.html
https://gsa.confex.com/gsa/2016AM/webprogram/Session40161.html

More papers at:
https://gsa.confex.com/gsa/2016AM/webprogram/Session40161.html

Yours,

Paul H.

Friday, 30 September 2016

OT: The Geologists Are Coming! And Other Quirky Geoscience Tunes

OT: The Geologists Are Coming! And Other Quirky Geoscience Tunes

The article about geology songs is:
Showstack, Randy, 2016, Amoeba People Sing Quirky Tunes About Geoscience. Eos. Vol. 97,
no. 18, pp. 8-9 https://eos.org/current-issues

and PDF
https://eos.org/wp-content/uploads/2016/09/15-Sept_magazine.pdf?cbb367

In the same issue, is “New Insights into North America’s Midcontinent Rift” by Seth Stein, Carol Stein, Jonas Kley, Randy Keller, and others and “Bacteria Preserve Record of Earth’s Magnetic Fields” by Elizabeth Deatrick.

A couple of Amoeba People’s songs are:
The Geologists Are Coming!
https://www.youtube.com/watch?v=1NU51lJIdrg

https://www.youtube.com/watch?v=KCYVhPp7cUs

and

Continental Drift: Alfred Wegener Song by The Amoeba People
https://www.youtube.com/watch?v=T1-cES1Ekto

Other tunes are:

Country Western Geology - Brad Paisley - 5/10/2014
https://www.youtube.com/watch?v=qF0iC6DXMQ8

Tiktaalik (Your Inner Fish)
https://www.youtube.com/watch?v=B9h1tR42QYA

Trilobite Deep time
https://www.youtube.com/watch?v=2d9NztifSD4

Yours,

Paul H.

Thursday, 29 September 2016

New Allerød–Younger Dryas Boundary Papers

New Allerød–Younger Dryas Boundary Papers

New papers about the Allerød–Younger Dryas boundary are:

Andronikov, A.A., A. Van Hoesel, I. E. Andronikov, and W. Z. Hoek,2016,
Trace Element Distribution and Implications in Sediments Across the The Allerod–Younger Dryas Boundary in the Netherlands and Belgium. Geografiska Annaler: Series A, Physical Geography. Early View (Online
Version of Record published before inclusion in an issue)
http://onlinelibrary.wiley.com/doi/10.1111/geoa.12140/abstract\

https://www.researchgate.net/publication/307902489_TRACE_ELEMENT_DISTRIBUTION_AND_IMPLICATIONS_IN_SEDIMENTS_ACROSS_THE_ALLEROD-YOUNGER_DRYAS_BOUNDARY_IN_THE_NETHERLANDS_AND_BELGIUM_TRACE_ELEMENT_DISTRIBUTION_ACROSS_THE_ALLEROD-YOUNGER_DRYAS_BOUNDARY

Jesse Tune, 2016, The Clovis–Cumberland–Dalton Succession: Settling into the Midsouth United States during the Pleistocene to Holocene Transition. PaleoAmerica. Pages 1-13 | Published online: 17 Aug 2016

https://www.academia.edu/27844014/The_Clovis-Cumberland-Dalton_Succession_Settling_into_the_Midsouth_United_States_during_the_Pleistocene-to-Holocene_Transition.pdf

and

Surovell, T. A. J. R. Boyd, C. V. Haynes Jr., and G. W. L. Hodgins, 2016,
On the Dating of the Folsom Complex and its Correlation with the Younger Dryas, the End of Clovis, and Megafaunal Extinction.PaleoAmerica, 2:2, 81-89, DOI: 10.1080/20555563.2016.1174559
http://dx.doi.org/10.1080/20555563.2016.1174559

Sunday, 25 September 2016

How Did That Make It Through Peer Review?

How Did That Make It Through Peer Review?

How Did That Make It Through Peer Review? by Andrew Farke,
Andy Farke, Miscellaneous, Navel Gazing, Paleocommunity PLOS Blogs.
http://blogs.plos.org/paleocomm/2016/02/03/how-did-that-make-it-through-peer-review/

and

Allison, D. B., A. W. Brown, B. J. George, and K. A. Kaiser, 2016,
Reproducibility: A tragedy of errors. Nature, vol. 530, no. 7588,
pp. 27-29.
http://www.nature.com/news/reproducibility-a-tragedy-of-errors-1.19264

Yours,

Paul H.

Monday, 19 September 2016

Some Ancient Mars Lakes Formed Long After Others

Some Ancient Mars Lakes Formed Long After Others

Some ancient Mars lakes formed long after others
http://www.jpl.nasa.gov/news/news.php?feature=6619
https://www.sciencedaily.com/releases/2016/09/160915142043.htm

The paper is:

Wilson, S. A., A. D. Howard, J. M. Moore, and J. A. Grant,
2016 A Cold-Wet Mid-Latitude Environment on Mars
during the Hesperian-Amazonian Transition: Evidence
from Northern Arabia Valleys and Paleolakes. Journal
of Geophysical Research: Planets, 2016; DOI: 10.1002/2016JE005052
http://onlinelibrary.wiley.com/doi/10.1002/2016JE005052/abstract

Another article is:

Mars rover views spectacular layered rock formations
NASA/Jet Propulsion Laboratory, September 12, 2016
https://www.nasa.gov/feature/jpl/mars-rover-views-spectacular-layered-rock-formations
http://thescienceexplorer.com/universe/mars-rover-views-spectacular-layered-rock-formations

Yours,

Paul H.

Saturday, 10 September 2016

Geology For Next Tucson Gem & Mineral Show 2017

Geology For Next Tucson Gem & Mineral Show 2017

For those people going to the February 9-12, 2017, Tucson Gem & Mineral Show, the below, free PDF files, provides information about the geology of the Tucson area.

Spencer, J. E., 2006, Geologist's Guide to the Core Complex Geology Along the Catalina Highway, Tucson Area, Arizona, open file Report 06-01-A. 38 p

http://repository.azgs.az.gov/uri_gin/azgs/dlio/360

http://repository.azgs.az.gov/sites/default/files/dlio/files/nid360/ofr_06-01catalinafieldguide-colorprint.pdf

and there is:

Bezy, J. V., 2016, A Guide to the Geology of the Santa Catalina Mountains, Arizona: The Geology and Life Zones of a Madrean Sky Island. Arizona Geological Survey Down-to-Earth # 22, 83 p.

http://repository.azgs.az.gov/uri_gin/azgs/dlio/1679

http://repository.azgs.az.gov/sites/default/files/dlio/files/nid1679/bezy-santacatalina-22-final.pdf

Yours,

Paul H.

Monday, 5 September 2016

Alaska Has Finally Been Mapped as Precisely as Mars

Alaska Has Finally Been Mapped as Precisely as Mars

Meteorite researchers can make their own and better
topographic maps of their search / study areas in parts
of Alaska using GIS software such as Global Mapper and
GRASS (Geographic Resources Analysis Support System)
using newly available digital elevation models (DEMs).

NSF, NGA release first unclassified digital elevation
models of Alaska, National Science foundation
http://www.nsf.gov/news/news_summ.jsp?cntn_id=189516

University of Minnesota-led project releases 3-D
elevation maps of Alaska for White House Arcti
Initiative. University of Minnesota, Sept. 1, 2016
https://cse.umn.edu/news-release/university-minnesota-led-project-releases-3-d-elevation-maps-alaska-white-house-arctic-initiative/

Alaska Has Finally Been Mapped as Precisely as Mars
New topographic maps made from satellite data will
help the state monitor—and plan for—its eroding
coastlines and melting permafrost by Joel K. Bourne, Jr.
National geographic, September 1, 2016.
http://news.nationalgeographic.com/2016/09/alaska-has-finally-been-mapped-as-precisely-as-mars/

ArcticDEM - http://pgc.umn.edu/arcticdem
ArcticDEM Explorer-
http://arcticdemapp.s3-website-us-west-2.amazonaws.com/explorer/

Other states have LiDAR and other DEMs from which
custom made topographic and relief maps can be
made using the above software. For example, Louisiana
has complete, downloadable LiDAR DEMs and raw

LiDAR data that can be downloaded and made into
custom maps. Go see http://atlas.lsu.edu and
http://atlas.lsu.edu/rasterdown.htm .

Yours,

Paul H.

Wednesday, 31 August 2016

Arctic Gives Clues on Worst Mass Extinction of Life

Arctic Gives Clues on Worst Mass Extinction of Life

Arctic gives clues on worst mass extinction of life
University of Tromso (Universitetet i Tromsø - UiT)
August 24, 2016
https://www.sciencedaily.com/releases/2016/08/160824111100.htm
http://phys.org/news/2016-08-arctic-clues-worst-mass-extinction.html

Grasby, S. E., B. Beauchamp, and J. Knies, 2016, Early Triassic
productivity crises delayed recovery from world’s worst mass
extinction. Geology. vol. 44, no. 9, pp. 779-782 DOI: 10.1130/G38141.1
http://geology.gsapubs.org/content/early/2016/08/05/G38141.1.abstract
ftp://rock.geosociety.org/pub/reposit/2016/2016263.pdf

An interesting, but unrelated paper is;

Hull, P. M., S. A. F. Darroch, and D. H. Erwin, 2015,
Rarity in mass extinctions and the future of ecosystems.
Nature. vol. 528, pp. 345-351.
http://people.earth.yale.edu/sites/default/files/files/Hull/Hulletal_nature_15.pdf

Yours,
Paul H.

Monday, 29 August 2016

Paleochannels Suggest Warm, Wet Ancient Mars

Paleochannels Suggest Warm, Wet Ancient Mars

Fossilized rivers suggest warm, wet ancient Mars
University College London, August 23, 2016
http://phys.org/news/2016-08-fossilized-rivers-ancient-mars.html
https://www.sciencedaily.com/releases/2016/08/160823135135.htm

The paper is:

Davis, J. M., M. Balme, P. M. Grindrod, R. M. E. Williams and
S. Gupta, 2016, Extensive Noachian fluvial systems in Arabia
Terra: Implications for early Martian climate. Geology.
First published online August 2016, doi: 10.1130/G38247.1
http://geology.gsapubs.org/content/early/2016/08/23/G38247.1.abstract

Yours,

Paul H

Saturday, 27 August 2016

Have Martian Fossils Been Obliterated by Meteorite Impacts ?

Have Martian Fossils Been Obliterated by Meteorite Impacts ?

Have signs of Martian life been obliterated by meteorite
blasts? Daily Mail, August 9, 2016
http://www.dailymail.co.uk/sciencetech/article-3731884/Have-signs-Martian-life-obliterated-meteorite-blasts-Extreme-pressures-impact-wipe-organic-compounds-study-finds.html

Meteors might have wiped out evidence of life on
Mars in the places we’re looking by Josh Hrala
Science Alert, August 12, 2016
http://www.sciencealert.com/impact-craters-are-not-the-best-places-to-look-for-signs-of-life-on-mars-study-finds

Evidence of Martian life could be hard to find in
some meteorite blast sites, Imperial College London
http://www3.imperial.ac.uk/newsandeventspggrp/imperialcollege/newssummary/news_8-8-2016-12-31-10
http://www.sciencenewsline.com/news/2016080815080028.html
https://www.sciencedaily.com/releases/2016/08/160808091250.htm

The paper is:

Montgomery, W., G. D. Bromiley, and M. A. Sephton.
2016, The nature of organic records in impact
excavated rocks on Mars. Scientific Reports.
Vol. 6, no. 30947 DOI: 10.1038/srep30947
http://www.nature.com/articles/srep30947

Another recent article about meteorite impacts is:

How Often do Meteorites Hit the Earth?
Space.com by Samantha Mathewson, August 10, 2016
http://www.space.com/33695-thousands-meteorites-litter-earth-unpredictable-collisions.html

Yours,

Paul H.

Thursday, 25 August 2016

We Have A Neighbor

We Have A Neighbor

In "We Have A Neighbor," Mrs. Webb wrote:

"Hi,"We have a neighboring planet
only 4 light years away. It's
small, earth-like, in the
habitable zone of its star,
yada-yada.

Everybody's going crazy...

Me too."

The paper is:

Anglada-Escudé, G., P. J. Amado, J. Barnes, and others, 2016, A
terrestrial planet candidate in a temperate orbit around Proxima
Centauri. Nature. vol. 536, pp. 437–440 (25 August 2016) doi:10.1038/nature19106
http://www.nature.com/nature/journal/v536/n7617/full/nature19106.html

PDF file at
https://www.eso.org/public/archives/releases/sciencepapers/eso1629/eso1629a.pdf

Yours,

Paul H.

Wednesday, 24 August 2016

New methodology for Estimating Size of Impact Craters

New methodology for Estimating Size of Impact Craters

New methodology provides better size estimates of meteorite
impact craters. University of Western Ontario, August 8, 2016
http://mediarelations.uwo.ca/2016/08/05/new-methodology-provides-better-size-estimates-meteorite-impact-craters/
http://phys.org/news/2016-08-methodology-size-meteorite-impact-craters.html

The paper is:

Osinski, G. R., and L. Ferrière, 2016, Shatter cones: (Mis)understood?
Science Advances. Science Advances. Vol. 2, no. 8, e1600616
DOI: 10.1126/sciadv.1600616
http://advances.sciencemag.org/content/2/8/e1600616

Yours,

Paul H.

Where are all the Large impact Craters on Ceres?

Where are all the Large impact Craters on Ceres?

Where are all the large impact craters on Ceres? July 28, 2016
http://www.nasa.gov/feature/jpl/the-case-of-the-missing-ceres-craters
https://www.middaydaily.com/ceres-huge-impact-craters/25755/
http://www.extremetech.com/extreme/232532-where-are-all-the-large-impact-craters-on-ceres

The paper is:

Marchi, S., A. I. Ermakov, C. A. Raymond, and many others, 2016
The missing large impact craters on Ceres Nature Communications.
vol. 7, Article number: 12257, doi:10.1038/ncomms12257
http://www.nature.com/ncomms/2016/160726/ncomms12257/full/ncomms12257.html

Yours,

Paul H.

Saturday, 20 August 2016

60Iron Found in Magnetofossils: Evidence of Supernova?

60Iron Found in Magnetofossils: Evidence of Supernova?

Supernova Ashes Found in Fossils Hint at Extinction Event
By Charles Q. Choi, Space.com, August 18, 2016
http://www.space.com/33777-supernova-ash-found-in-fossils.html

Scientists Identify Supernova Ashes in Magnetic Fossils
Sputnik.News, http://sptnkne.ws/bWPg
http://sputniknews.com/world/20160819/1044417107/supernova-linked-to-extinction.html

“Supernova ash has been found in fossils created by bacteria
here on Earth. The discovery, published on August 10 in the
Proceedings of the National Academy of Sciences journal,
suggests a link between an explosion of a star and an
extinction event on our planet over two million years ago.”

The paper is:

Ludwiga, P., S. Bishopa, R. Eglib, et al., 2016, Time-resolved
2-million-year-old supernova activity discovered in Earth’s
microfossil record. Proceedings of the National Academy of
Sciences. vol. 113 no. 33, pp. 9232–9237, doi: 10.1073/pnas.1601040113
http://www.pnas.org/content/113/33/9232.abstract?sid=b595085e-c6e9-4588-9cb5-6f7364cc2ceb

Yours,

Paul H.

Thursday, 18 August 2016

Recent Articles About Fossil Hunting Laws and Regulations- Canada

Recent Articles About Fossil Hunting Laws and Regulations - Canada Dinosaurs

Below are a couple of articles about laws and regulations
for fossil hunting that raise either the same or similar issues
that concern collecting meteorites.

Welcome to Alberta, Canada: Socialist Dinosaur Paradise Inverse,
(The bones belong to the people) Jacqueline Ronson, August 17, 2016
https://www.inverse.com/article/19840-alberta-canada-dinosaur-paleontology-fossil-collection-laws-socialism

4 Weird True Crime Stories From the Dinosaur Fossil Black Market
(Unpredictable laws and high demand create the perfect environment
for illegal enterprise) by Jacqueline Ronson, Inverse, May 22, 2016.
https://www.inverse.com/article/15914-4-weird-true-crime-stories-from-the-dinosaur-fossil-black-market

The articles, do not necessarily represent my views. If you need
comment about them, either post your comments as a reply to
this thread or correspond with the authors of the article.

Finally, an article that is unrelated to meteorites, but still quite
interesting.

Joel, L. (2016), How did fragile early microbes become fossils?,
Eos, 97, doi:10.1029/2016EO057519. Published on 12 August 2016.
https://eos.org/articles/how-did-fragile-early-microbes-become-fossils
https://eos.org/current-issues

(During the Ediacaran period more than a half billion years ago,
clay mineral coats likely shielded delicate remains, helping
them become exquisitely preserved in rock, recent experiments
suggest.)

Yours,

Paul H.

Sunday, 7 August 2016

Lasers Used to Simulate Giant Extraterrestrial Impacts

Lasers Used to Simulate Giant Extraterrestrial Impacts

Lasers melt rocks to reveal development of super-Earths
and how giant impacts make magma, Hiroshima University
http://www.dailymail.co.uk/sciencetech/article-3722097/Rock-melting-lasers-reveal-Earth-like-planets-magma-form.html
https://www.sciencedaily.com/releases/2016/08/160803143117.htm
http://phys.org/news/2016-08-lasers-reveal-super-earths-giant-impacts.html

The paper is:

Sekine T., Ozaki N., Miyanishi K., Asaumi Y., Kimura T.,
Albertazzi, Y. S., Sakawa, Y., Sano, T., Sugita, S., Matsui,
T., and Kodama, R., 2016, Shock compression response
of forsterite above 250 GPa Science Advances.
Vol. 2, no. 8, e1600157 DOI: 10.1126/sciadv.1600157
http://advances.sciencemag.org/content/2/8/e1600157

Yours,

Paul H.

Friday, 5 August 2016

Fulgurites Used to Measure Lightning Strike's Energy

Fulgurites Used to Measure Lightning Strike's Energy

Study Provides a New Method to Measure the Energy
of a Lightning Strike By investigating “fossilized”
sand cylinders made by lightning strikes, sometimes
thousands of years old, a University of South Florida
professor provides a unique history of lightning and
the energy contained in a single strike.
http://news.usf.edu/article/templates/?a=7453&z=220

Scientists Measure Lightning Energy With Fossils
by Jon Mendoza Aug 04, 2016 03:45 AM EDT
http://www.natureworldnews.com/articles/26250/20160804/scientists-measure-lightning-energy-fossils.htm

Florida researchers develop new method of calculating
lightning strike's energy using geological methods
French Tribune
http://frenchtribune.com/teneur/1624974-florida-researchers-develop-new-method-calculating-lightning-strike-s-energy-using

The paper is:

Pasek, M. A., and M. Hurst, 2016, A Fossilized Energy
Distribution of Lightning Scientific Reports. Vol. 6,
Article number: 30586
http://www.nature.com/articles/srep30586

Yours

Paul H.



Friday, 29 July 2016

More Than Meteorites Fall from the Sky - Ice

More Than Meteorites Fall from the Sky - Ice

20 KG ice 'meteorite' destroys car in central Rome
The Local, Italy, July 27, 2016
http://www.thelocal.it/20160727/20-kg-ice-meteorite-destroys-car-in-central-rome

Chunk of ice that 'could have come from a plane' falls
from sky and crashes through car's windscreen
Daily Mail, July 28, 2916
http://www.dailymail.co.uk/travel/travel_news/article-3712699/Rome-police-investigate-ice-come-plane-crashed-car.html

Roma, meteorite di ghiaccio sfonda un'auto, indaga
la Procura: «É caduto da un aereo»
http://foto.ilmessaggero.it/roma/ghiaccio_caduto_colpisce_auto_via_giacomo_folchi_roma-1739674.html?idArticolo

Yours,

Paul H.

Thursday, 28 July 2016

Ongoing Amazon and eBay Scheme

Ongoing Amazon and eBay Scheme

While, "surfing" the latest posts about the problems of using, I was reminded of an article that came across recently online. As someone, who relatively rarely purchases something on eBay, I found the below article about the pitfalls of eBay quite fascinating.

Why It's Nearly Impossible To Stop This Amazon and eBay Scheme This Amazon and eBay scheme is driving some entrepreneurs nuts By Jason Feifer, Entrepreneur Magazine: August 2016
https://www.entrepreneur.com/article/278622

Yours,

Paul H.

Friday, 22 July 2016

Origin of non-radial Imbrium Basin Sculpture - Moon

Origin of non-radial Imbrium Basin Sculpture (Moon)

Vast asteroid created 'Man in Moon's eye' crater
by Rebecca Morelle, BBC News, July 20, 2016
http://www.bbc.com/news/science-environment-36847382

Asteroid that formed moon's Imbrium Basin may
have been protoplanet-sized, July 20, 2016
http://phys.org/news/2016-07-asteroid-moon-imbrium-basin-protoplanet-sized.html
https://www.sciencedaily.com/releases/2016/07/160720135637.htm

The paper is:

Schultz, P. H., and D. A. Crawford, 20016, Origin and
implications of non-radial Imbrium Sculpture on the Moon
Nature. vol. 535, pp. 391–394 doi:10.1038/nature18278
http://www.nature.com/nature/journal/v535/n7612/full/nature18278.html

Schultz, P. H., 2012, Origin of Imbrium Basin sculpture.
Geological Society of America Abstracts with Programs.
vol. 44, no. 7, p.481
https://gsa.confex.com/gsa/2012AM/webprogram/Paper209184.html

Yours,

Paul H.

Saturday, 16 July 2016

Soot May Have Killed off the Dinosaurs and Ammonites

Soot May Have Killed off the Dinosaurs and Ammonites

Soot May Have Killed off the Dinosaurs and Ammonites
Tohoku University, July 15, 2016
http://www.eurekalert.org/pub_releases/2016-07/tu-smh071416.php
https://www.sciencedaily.com/releases/2016/07/160715113558.htm

"A new hypothesis on the extinction of dinosaurs and
ammonites at the end of the Cretaceous Period has
been proposed by a research team."

Darkness Falls On the Dinosaurs
By Marcia Bjornerud , New Yorker, July 14, 2016
http://www.newyorker.com/tech/elements/darkness-falls-on-the-dinosaurs

The paper is:

Kaiho, K/. N. Oshima, K.Adachi, Y. Adachi, T. Mizukami,
M. Fujibayashi, and R. Saito, 2016, Global climate change
driven by soot at the K-Pg boundary as the cause of the
mass extinction. Scientific Reports, 2016; 6: 28427
DOI: 10.1038/srep28427
http://www.nature.com/articles/srep28427

A slightly related article is:

Small town in Mexico honors meteorite that
changed life on Earth. Latino Fox News, July 05, 2016
http://latino.foxnews.com/latino/news/2016/07/05/small-town-in-mexico-honors-meteorite-that-changed-life-on-earth

Yours,

Paul H.

A Blind Test of the Younger Dryas Impact Hypothesis

A Blind Test of the Younger Dryas Impact Hypothesis

Holliday V, Surovell T, Johnson E (2016) A Blind Test of the
Younger Dryas Impact Hypothesis. PLoS ONE 11(7): e0155470.
doi:10.1371/journal.pone.0155470
http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0155470
http://www.ncbi.nlm.nih.gov/pubmed/27391147

An earlier paper is;

Holliday, V. T., T. A. Surovell, D. J. Meltzer, D. K. Grayson, and
M. Boslough, 2014, The Younger Dryas impact hypothesis: A
cosmic catastrophe. Journal of Quaternary Science 29:515-530.
http://www.uwyo.edu/surovell/pdfs/jqs%202014.pdf
http://www.uwyo.edu/surovell/

and "A Cosmic Catastrophe: the Great Clovis comet Debate" at
http://www.argonaut.arizona.edu/Clovis_Comet_Debate.html

Yours,

Paul H.

Friday, 15 July 2016

Help discover supernovae from Pan-STARRS1

Help discover supernovae from Pan-STARRS1

Hi,

There is a new crowd source research project about searching
for supernovae. It is "Supernova Hunters" at
https://www.zooniverse.org/projects/dwright04/supernova-hunters .

This project is part of Zooniverse at https://www.zooniverse.org .

"The Zooniverse provides opportunities for people around
the world to contribute to real discoveries in fields ranging
from astronomy to zoology. Welcome to the largest online
platform for collaborative volunteer research."

Yours,

Paul H.

2016 The THIRD Year of "CERTAIN Uncertainty" ™ / Meteors, Asteroids, Comets, and MORE!!

Thursday, 14 July 2016

Evidence of Quaternary Supernova Buffeting Earth

Evidence of Quaternary Supernova Buffeting Earth

Ancient supernovae buffeted Earth's biology with
radiation dose, researcher says, July 11, 2016
https://today.ku.edu/2016/07/06/research-ancient-supernovae-were-close-enough-buffet-biology-earth-radiation-dose
http://phys.org/news/2016-07-ancient-supernovae-buffeted-earth-biology.html
http://www.space.com/32631-radioactive-iron-supernova-apollo-moon-rocks.html

Fimiani, L., D. L. Cook, T. Faestermann, J. M.
Gómez-Guzmán, K. Hain, G. Herzog, K. Knie,
G. Korschinek, P. Ludwig, J. Park, R. C. Reedy,
and G. Rugel, 2016, Interstellar Fe60 on the
Surface of the Moon. Phys. Rev. Lett. 116, 151104
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.116.151104

Yours,

Paul H

Monday, 11 July 2016

Sunday, 10 July 2016

Talks About the Co-Evolution of the Geosphere and the Biosphere - Robert Hazen

Talks About the Co-Evolution of the Geosphere and the Biosphere - Robert Hazen

Talk that touch on the mineralogy of meteorites, Earth, and other planets.

1. Mineralogical Co-Evolution of the Geo- and Biospheres
https://www.youtube.com/watch?v=PcktDStIfiQ

"Dr. Robert Hazen, George Mason University, talks about the evolution of minerals on Earth, and other planets."

2. Robert Hazen -- The Co-Evolution of the Geosphere and the Biosphere, Linus Pauling
Memorial Lectures, February 15th, 2013
https://www.youtube.com/watch?v=D89-05ZKh2Y

Yours,
Paul H.

Talks About the Co-Evolution of the Geosphere and the Biosphere - Robert Hazen

Talks About the Co-Evolution of the Geosphere and the Biosphere - Robert Hazen

Talk that touch on the mineralogy of meteorites, Earth, and other planets.

1. Mineralogical Co-Evolution of the Geo- and Biospheres
https://www.youtube.com/watch?v=PcktDStIfiQ

"Dr. Robert Hazen, George Mason University, talks about the evolution of minerals on Earth, and other planets."

2. Robert Hazen -- The Co-Evolution of the Geosphere and the Biosphere, Linus Pauling
Memorial Lectures, February 15th, 2013
https://www.youtube.com/watch?v=D89-05ZKh2Y

Yours,
Paul H.

Thursday, 7 July 2016

Giant Impact May Have Created Mars’ Tiny Moons

Giant Impact May Have Created Mars’ Tiny Moons

How a missing moon could explain Mars's mysterious little satellites Scientists have long been puzzled by Mars's strange little moons, Phobos and Deimos. But perhaps a long-gone moon could help unravel the mystery, suggests new research by Eva Botkin-Kowacki, Christian Science Monitor, July 4,2016
http://www.csmonitor.com/Science/2016/0704/How-a-missing-moon-could-explain-Mars-s-mysterious-little-satellites

A giant impact may have created Mars’ tiny moons by Katherine Lindemann, researchgate, July 4, 2016
https://www.researchgate.net/blog/post/a-giant-impact-may-have-created-mars-tiny-moons

Rosenblatt, P., S. Charnoz, K. M. Dunseath, M. Terao-Dunseath, A. Trinh, R. Hyodo, H. Genda, and S. Toupin, 2016, Accretion of Phobos and Deimos in an extended debris disc stirred by transient
moons Nature Geoscience (2016) doi:10.1038/ngeo2742 Received 18 January 2016 Accepted 18 May 2016
http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2742.html

I wonder if pieces of debris from this collision could have been sent towards Earth?

Yours,

Paul H.

Wednesday, 6 July 2016

Volcanoes and Asteroid Impact Linked to K-Pg Mass Extinction ??

Volcanoes and Asteroid Impact Linked to K-Pg Mass Extinction ??

Warming pulses in ancient climate record link volcanoes,
asteroid impact and dinosaur-killing mass extinction,
University of Michigan, July 5, 2016
http://phys.org/news/2016-07-pulses-ancient-climate-link-volcanoes.html
http://ns.umich.edu/new/releases/24010-warming-pulses-in-ancient-climate-record-link-volcanoes-asteroid-impact-and-dinosaur-killing-mass-extinction

The open-access paper is:

Petersen, S. V., A. Dutton, and K. C. Lohmann, 2016, End-
Cretaceous extinction in Antarctica linked to both Deccan
volcanism and meteorite impact via climate change. Nature
Communications 7, Article number: 12079 doi:10.1038/ncomms12079
Received 31 December 2015 Accepted 27 May 2016 Published 05 July 2016
http://phys.org/journals/nature-communications/

A related open-access paper is:

Witts, J. D., R. J. Whittle, P. B. Wignall, J. A. Crame, J. E. Francis,
R. J. Newton, and V, C. Bowman, 2016, Macrofossil evidence
for a rapid and severe Cretaceous–Paleogene mass extinction
in Antarctica. Nature Communications 7, Article number: 11738
doi:10.1038/ncomms11738 Received 17 August 2015
Accepted 26 April 2016 Published 26 May 2016
http://www.nature.com/ncomms/2016/160526/ncomms11738/full/ncomms11738.html

Yours,

Paul

Tuesday, 5 July 2016

The “Great Expectations Syndrome” and Mass Extinctions

The “Great Expectations Syndrome” and Mass Extinctions

Below is an interesting open-access paper about mass extinctions.

Racki, G., 2012, The Alvarez impact theory of mass extinction; limits to its applicability and the “great expectations syndrome”.
Acta Palaeuntulugica Polonica. vol. 57, no. 4, pp. 681–702.
Abstract: http://www.bioone.org/doi/abs/10.4202/app.2011.0058
PDF file: http://www.bioone.org/doi/pdf/10.4202/app.2011.0058

Yours,

Paul H.

Sunday, 3 July 2016

New Publications About Younger Dryas Black Mats

New Publications About Younger Dryas Black Mats

Below are a couple of publications that add more background information relative to the with the Younger Dryas Impact controversy.

Erin Harris-Parks, 2016, The micromorphology of
Younger Dryas-aged black mats from Nevada,
Arizona, Texas and New Mexico. Quaternary
Research. vol. 85, no. 1, pp. 94–106.
http://www.sciencedirect.com/science/article/pii/S0033589415001131
http://adsabs.harvard.edu/abs/2016QuRes..85...94H

Erin Harris-Parks, 2014, The micromorphology of
Younger Dryas-aged black mats from Nevada,
Arizona, Texas and New Mexico. Unpublished MS
thesis, Department of Geosciences, Univ. of Arizona
http://www.geo.arizona.edu/Antevs/geos_ths.html
http://www.geo.arizona.edu/Antevs/Theses/HarrisParks2014.pdf

Yours,

Paul H.

Wednesday, 29 June 2016

Opal Discovered in Antarctic Meteorite

Opal Discovered in Antarctic Meteorite

Opal-Studded Meteorite Hints at Origins of Earth's Water
By Nola Taylor Redd, Space.com, June 27, 2016
http://www.space.com/33276-opal-pieces-found-in-antarctica-meteorite.html

New Meteorite Offers Clues About the Origins of Life on
Earth By Sophie Kleeman, Gizmodo, June 7, 2016
http://gizmodo.com/this-opal-studded-meteorite-offers-clues-about-the-orig-1782682303

Opal discovered in Antarctic meteorite
Royal Astronomical Society (RAS), June 27, 2016
https://www.sciencedaily.com/releases/2016/06/160627095939.htm
https://www.ras.org.uk/news-and-press/2873-opal-discovered-in-antarctic-meteorite
https://nam2016.org/press-releases/84-opal-discovered-in-antarctic-meteorite-ras-pr-16-31-nam-5-embargoed

Oxygen Isotopes and Origin of Opal in an Antarctic Ureilite
by Downes H. Beard A. D. Franchi I. A. Greenwood R. C.
79th Annual Meeting of the Meteoritical Society (2016) [#6141]
http://www.hou.usra.edu/meetings/metsoc2016/pdf/6141.pdf
http://karmaka.de/?p=9173

Yours,

Paul H.




Dinosaur Eggs, Meteorites, Or Signs of an Ancient Civilisation?

Dinosaur Eggs, Meteorites, Or Signs of an Ancient Civilisation?

It is strange that whoever wrote the headline even considered that these concretions might be either
meteorites or dinosaur eggs. I guess those were added simply to get people to read the article.

Dinosaur eggs, meteorites, signs of an ancient civilisation:what are these giant balls? By Ann Liesowska, Siberian times Found 30 metres underground at a coal mine, they're dubbed 'Jurassic pearls' or the marbles of a Siberian colossus.
http://siberiantimes.com/other/others/features/f0237-dinosaur-eggs-meteorites-signs-of-an-ancient-civilisation-what-are-these-giant-balls/

Siberia's 'Jurassic Pearls' Sign of Ancient Civilization; Giant Balls Stun Locals by Jessica F, Nature world News,
http://www.natureworldnews.com/articles/24329/20160628/siberias-jurassic-pearls-sign-of-ancient-civilization-giant-balls-stun-locals.htm

Are Siberia's 'Jurassic Pearls' the remains of an ancient civilisation? Bizarre colour-changing stones leave locals stumped by Will Stewart, Daily Mail, June 27, 2016
http://www.dailymail.co.uk/sciencetech/article-3662007/Are-Siberia-s-Jurassic-Pearls-remains-ancient-civilisation-Bizarre-colour-changing-stones-leave-locals-stumped.html

For some pseudo-eggs, look at:
Dinosaur eggs' discovered in Chechnya (Photos, Video)
RT News, https://www.rt.com/news/chechnya-dinosaur-eggs-russia-333/

Huge Dinosaur Eggs Found in Chechnya, Scientists Claim
April 17, 2012 By Lama Hasan
http://abcnews.go.com/blogs/headlines/2012/04/huge-dinosaur-eggs-found-in-chechnyascientists-claim/

Other web pages about meter-scale concretions.

1. Prehistoric UFOs? (No, Meter-scale Concretions)
Hall of Ma'at - http://www.hallofmaat.com/read.php?1,604622,604622#msg-604622

2. Archaeologist claims boulder is the world's oldest man-made sphere, Hall of Ma'at
http://www.hallofmaat.com/read.php?1,604086,604154#msg-604154

Yours,

Paul H.

Tuesday, 28 June 2016

Researchers Trace Mercury's Origins to Rare Meteorite

Researchers Trace Mercury's Origins to Rare Meteorite

Researchers trace Mercury's origins to rare meteorite
by: Massachusetts Institute of Technology, June 27, 2016
http://phys.org/news/2016-06-mercury-rare-meteorite.html
https://www.sciencedaily.com/releases/2016/06/160627132939.htm

the paper is:

Namur, O., M. Collinet, B. Charlier, T. L. Grove, F. Holtz,
and C. McCammon, 2016, Melting processes and mantle
sources of lavas on Mercury. Earth and Planetary Science
Letters. vol. 439, pp. 117–128
http://www.sciencedirect.com/science/article/pii/S0012821X16000522
and https://goo.gl/E0BYUa

Yours,

Paul H.

Saturday, 25 June 2016

Lunar Lava Tubes Could Protect Astronauts

Lunar Lava Tubes Could Protect Astronauts

Lunar Shelter: Moon Caves Could Protect Astronauts
By Nola Taylor Redd, Space.com
http://www.space.com/32795-moon-lava-tubes-protect-astronauts.html

Scientists May Have Spotted Buried Lava Tubes on
the Moon by Nadia Drake , No Place Like Home (Blog)
http://phenomena.nationalgeographic.com/2016/03/25/scientists-may-have-spotted-buried-lava-tubes-on-the-moon/

Marius Hills Pit - Lava Tube Skylight?
Lunar Reconnaissance Orbiter Camera
NAC M114328462R [NASA/GSFC/Arizona State University]
http://lroc.sese.asu.edu/posts/202

The Marius Hills pit is a possible skylight in a lava
tube in an ancient volcanic region of the Moon called
the Marius Hills. This LROC image is the highest
resolution image of the pit to date. Image width is
500 meters, pixel width is 0.5 meters,
NAC M114328462R [NASA/GSFC/Arizona State University]
http://lroc.sese.asu.edu/news/uploads/LROCiotw/M114328462R_thumb.png

Theoretical study suggests huge lava tubes could exist
on moon, University of Perdue,
http://www.purdue.edu/newsroom/releases/2015/Q1/theoretical-study-suggests-huge-lava-tubes-could-exist-on-moon.html

Yours,

Paul H.

Friday, 24 June 2016

Tridymite Discovered On Mars

Tridymite Discovered On Mars

NASA scientists discover unexpected mineral on Mars
NASA/Jet Propulsion Laboratory, June 22, 2016
https://www.sciencedaily.com/releases/2016/06/160622170422.htm

http://phys.org/news/2016-06-curiosity-rover-evidence-ancient-explosive.html


Richard V. Morris, David T. Vaniman, David F. Blake, Ralf  Gellert, Steve J. Chipera, Elizabeth B. Rampe, Douglas W. Ming, Shaunna M. Morrison, Robert T. Downs, Allan H.
Treiman, Albert S. Yen, John P. Grotzinger, Cherie N.Achilles, Thomas F. Bristow, Joy A. Crisp, David J. Des Marais, Jack D. Farmer, Kim V. Fendrich, Jens Frydenvang, Trevor G. Graff, John-Michael Morookian, Edward M.Stolper, Susanne P. Schwenzer. 
Silicic volcanism on Mars evidenced by tridymite in high-SiO2 sedimentary rock at Gale crater.
Proceedings of the National Academy of Sciences, 2016; 201607098 DOI: 10.1073/pnas.1607098113
http://www.pnas.org/content/early/2016/06/07/1607098113

yours,
Paul H.

Tuesday, 21 June 2016

Late Pleistocene Patagonian Megafaunal Extinctions

Late Pleistocene Patagonian Megafaunal Extinctions

Megafauna mystery: What killed off the mastodons,
mammoths, and giant sloths? An Ice Age whodunit:
Scientists are gathering clues about what caused a
die off in giant prehistoric critters.
By Eva Botkin-Kowacki, June 17, 2016
http://www.csmonitor.com/Science/2016/0617/Megafauna-mystery-What-killed-off-the-mastodons-mammoths-and-giant-sloths

Rising temperatures and humans were a deadly
combo for ancient South American megafauna
by Lizzie Wade, Science Magazine, June 17, 2016
http://www.sciencemag.org/news/2016/06/rising-temperatures-and-humans-were-deadly-combo-ancient-south-american-megafauna

The paper is:

Metcalf, J. L., C. Turney, and many others, 2016,
Synergistic roles of climate warming and human
occupation in Patagonian megafaunal extinctions
during the Last Deglaciation. Science Advances
17 Jun 2016: Vol. 2, no. 6, e1501682
http://advances.sciencemag.org/content/2/6/e1501682
http://advances.sciencemag.org/content/advances/2/6/e1501682.full.pdf

Another paper is:

Barnosky, A. D., P.L. Koch, R. S. Feranec, S. L. Wing,
and A. B. Shabel. 2004. Assessing the Causes of Late
Pleistocene Extinctions on the Continents.
Science. V. 306, pp. 70-75. https://goo.gl/kIEEnV

More papers at http://ib.berkeley.edu/labs/barnosky/publications.html

Yours,

Paul H.

Sunday, 12 June 2016

New Elements Named - Nihonium, Moscovium, Tennessine and Oganesson

New Elements Named - Nihonium, Moscovium, Tennessine and Oganesson

Four new element names proposed for periodic table
Welcome Nihonium, Moscovium, Tennessine and Oganesson.
By Richard Van Noorden, Nature News, June 8, 2016
http://www.nature.com/news/four-new-element-names-proposed-for-periodic-table-1.20069

New elements on the periodic table are named
By Ashley Strickland, CNN, June 9, 2016
http://www.cnn.com/2016/06/08/health/periodic-table-new-elements-names/

Discovery of Elements 113 and 115
Lawrence Livermore National Laboratory
https://pls.llnl.gov/research-and-development/nuclear-science/project-highlights/livermorium/elements-113-and-115

Yours,

Paul H.

France Launches Meteor-spotting Network

France Launches Meteor-spotting Network

France launches massive meteor-spotting network: Tracking space
rocks that reach Earth will give insight into the early Solar System.
by Traci Watson, Nature news, June 10, 2016,
http://www.nature.com/news/france-launches-massive-meteor-spotting-network-1.20070

Yours,

Paul H.

Sunday, 5 June 2016

The Dunning–Kruger Effect

The Dunning–Kruger Effect

The Dunning–Kruger effect is sometimes encountered
in discussing meteorites on this list.

Dunning–Kruger effect
https://goo.gl/J3fcrz and
https://en.wikipedia.org/wiki/Dunning–Kruger_effect

Dunning, D., K. Johnson, J. Ehrlinger and J. Kruger,
2003, Why People Fail to Recognize Their Own
Incompetence. Current Directions in Psychological
Science. vol. 12, no. 3, pp. 83-87.
http://cdp.sagepub.com/content/12/3/83.abstract
and https://goo.gl/BEffpS

Kruger, J., and D. Dunning, 1999, Unskilled and
unaware of it: how difficulties in recognizing
one's own incompetence lead to inflated self-
assessments. Journal of Personality and Social
Psychology vol. 77, no.6, pp. 1121-1134.
https://goo.gl/YWxCIU and https://goo.gl/sJMp8a

Yours,
Paul H

Friday, 3 June 2016

Rapid and Severe Cretaceous–Paleogene Extinction in Antarctic

Rapid and Severe Cretaceous–Paleogene Extinction in Antarctic

How the event that killed off the dinosaurs wiped out
life in Antarctica, The Conversation, June 2, 2016
http://theconversation.com/how-the-event-that-killed-off-the-dinosaurs-wiped-out-life-in-antarctica-60265?

Fossils Suggest Antarctic Creatures Were Affected By
Dinosaur-Killing Extinction Event. Contrary to previous
beliefs, a new study suggests that Antarctic creatures
weren't safe from the dinosaur-killing extinction
event at the end of the Cretaceous Period
Headlines & Global News-May 31, 2016
http://www.hngn.com/articles/199935/20160531/fossils-suggest-antarctic-creatures-were-affected-dinosaur-killing-extinction-event.htm

Fossils Suggest Antarctic Creatures Were Affected By
Dinosaur-Killing Extinction Event. University of Leeds.
http://www.sci-news.com/paleontology/south-polar-regions-end-cretaceous-extinction-03898.html
https://www.sciencedaily.com/releases/2016/05/160526091956.htm

Witts, J. D., R. J. Whittle, P. B. Wignall, J. A. Crame,
J. E. Francis, R. J. Newton, and V. C. Bowman, 2016,
Macrofossil evidence for a rapid and severe
Cretaceous–Paleogene mass extinction in Antarctica.
Nature Communications. Vol. 7, Article number: 11738
doi:10.1038/ncomms11738
http://www.nature.com/ncomms/2016/160526/ncomms11738/full/ncomms11738.html

PDF file at https://www.researchgate.net/publication/301658453_Macrofossil_evidence_for_a_rapid_and_severe_Cretaceous-Paleogene_mass_extinction_in_Antarctica

Yours,

Paul H.

Wednesday, 25 May 2016

Radiation Might Destroy Ancient Martian Organics

Radiation Might Destroy Ancient Martian Organics

Alien Life? Radiation May Erase Mars, Europa Fossils
By Nola Taylor Redd, Space.com, May 24, 2016
http://www.space.com/32962-alien-fossils-mars-europa-radiation.html

A couple of abstracts are:

Pavlov, A. A., J. Eigenbrode, D. Glavin, and M. Floyd, 2014,
Rapid Degradation of the Organic Molecules in Martian
Surface Rocks Due to Exposure to Cosmic Rays. Severe
Implications to the "Extinct" Life on Mars. 45th Lunar
and Planetary Science Conference (2014). abstract #2830
http://www.hou.usra.edu/meetings/lpsc2014/pdf/2830.pdf

Pavlov, A. A., D. Glavin, J. Dworkin, H. McLain, and J.
Eigenbrode, 2016, Rapid Degradation of the Organic
Molecules in Martian Subsurface Rocks Due to Exposure
to Cosmic Rays. 47th Lunar and Planetary Science
Conference (2016) abstract no. 2577
http://www.hou.usra.edu/meetings/lpsc2016/pdf/2577.pdf
http://www.hou.usra.edu/meetings/lpsc2016/authorindex.cfm?r=l-r#P

Yours,

Paul H.

Sunday, 22 May 2016

Explanation for Origin of Nature's Heaviest Elements

Explanation for Origin of Nature's Heaviest Elements

Galactic 'Gold Mine' Explains the Origin of Nature's Heaviest Elements:
A unique galaxy loaded with hard-to-produce, heavy elements sheds
light on stellar histories and galactic evolution. MIT Kavli Institute for
Astrophysics and Space Research, May 19, 2016
http://www.kavlifoundation.org/science-spotlights/cosmic-heavy-metals
http://phys.org/news/2016-05-galactic-gold-nature-heaviest-elements.html

3 Questions: The origin of the cosmos’ heaviest elements: Unique galaxy
offers clues to the extreme conditions that yield the heavies of the
periodic table.
MIT Kavli Institute for Astrophysics and Space Research, March 21, 2016
http://news.mit.edu/2016/3-q-galaxy-origin-cosmos-heaviest-elements-0321

The paper is:

Alexander, P. J., A. Frebel, A. Chiti, and J. D. Simon, 2016, R-process
enrichment from a single event in an ancient dwarf galaxy
Nature. vol. 531, pp. 610–613 (31 March 2016) doi:10.1038/nature17425
http://www.ncbi.nlm.nih.gov/pubmed/27001693

Also, there is:

Copious r-process enrichment from a single event in an ancient dwarf
galaxy by Alexander P. Ji, Anna Frebel, Anirudh Chiti, Joshua D. Simon
http://arxiv.org/abs/1512.01558

Yours,

Paul H.

Saturday, 21 May 2016

Evidence of Precambrian Asteroid Impacts Found in Australia

Evidence of Precambrian Asteroid Impacts Found in Australia

Clues to ancient giant asteroid found in Australia
Australian National University, May 16, 2016
http://www.anu.edu.au/news/all-news/clues-to-ancient-giant-asteroid-found-in-western-australia

https://www.sciencedaily.com/releases/2016/05/160516095132.htm

http://www.astronomy.com/news/2016/05/clues-to-ancient-giant-asteroid-found-in-western-australia

Earth Hit by 15-Mile-Wide Earth Hit by 15-Mile-Wide
Asteroid 3.5 Billion Years Ago, Evidence Indicates, May 17, 2016
http://www.sci-news.com/geology/earth-hit-asteroid-3-5-billion-years-ago-03871.html

Glikson, A., A. Hickman, N. J. Evans, C. L. Kirkland, J.-W. Park, R. Rapp, and S. Romano., 2016, A new ∼3.46Ga asteroid impact ejecta unit at Marble Bar, Pilbara Craton, Western Australia: A petrological, microprobe and laser ablation ICPMS study. Precambrian Research; 279: 103 DOI: 10.1016/j.precamres.2016.04.003
https://www.researchgate.net/publication/301249834_A_new_346_Ga_asteroid_impact_ejecta_unit_at_Marble_Bar_Pilbara_Craton_Western_Australia_A_petrological_microprobe_and_laser_ablation_ICPMS_study

Yours,

Paul H.

Ancient Tsunami on Mars

Ancient Tsunami on Mars

Ancient tsunami evidence on Mars reveals life potential,
By Blaine Friedlander, Cornell Chronicle, May 19, 2016
http://www.news.cornell.edu/stories/2016/05/ancient-tsunami-evidence-mars-reveals-life-potential
https://www.sciencedaily.com/releases/2016/05/160519101756.htm

There Were Mega-Tsunamis on Mars. Billions of years ago, huge waves devastated the Martian landscape, make Earth's tsunamis look tame by comparison. Popular Mechanics
http://www.popularmechanics.com/space/a20941/there-were-mega-tsunamis-on-mars/

Mars may have been carved up by massive ancient tsunamis
By Rachel Feltman, The Washington Post, May 19, 2016
https://www.washingtonpost.com/news/speaking-of-science/wp/2016/05/19/mars-may-have-been-carved-up-by-ancient-tsunamis/

Rodriguez, J. A. P., A. G. Fairén, K. L. Tanaka, M. Zarroca, R. Linares, T. Platz, G. Komatsu, H. Miyamoto, J. S. Kargel, J. Yan, V. Gulick, K. Higuchi, V. R. Baker and N. Glines, 2016, Tsunami Waves Extensively Resurfaced the Shorelines of an Early Martian Ocean. Scientific Reports, 2016
DOI: 10.1038/srep25106
http://www.nature.com/articles/srep25106

Yours,

Paul H.

Friday, 13 May 2016

Cosmic dust reveals Earth's ancient atmosphere

Cosmic dust reveals Earth's ancient atmosphere

Cosmic dust reveals Earth's ancient atmosphere
Monash University, May 11, 2016
http://www.smh.com.au/technology/sci-tech/cosmic-dust-reveals-earths-ancient-atmosphere-20160510-goryca.html
https://www.sciencedaily.com/releases/2016/05/160511154214.htm
http://www.livescience.com/54716-space-dust-reveals-clues-ancient-earth-atmosphere.html

“Using the oldest fossil micrometeorites -- space dust –
ever found, new research has made a surprising
discovery about the chemistry of Earth's atmosphere
2.7 billion years ago.”

The paper is:

Tomkins, A. G., L. Bowlt, M. Genge, S. A. Wilson, H. E. A.
Brand, and J. L. Wykes, 2016, Ancient micrometeorites
suggestive of an oxygen-rich Archaean upper atmosphere.
Nature, 2016; 533 (7602): 235 DOI: 10.1038/nature17678
http://www.nature.com/nature/journal/v533/n7602/full/nature17678.html

Off-topic, but a break from the daily gloom and doom.

World's Oldest Cat Anointed by Guinness
Discovery News, May 11, 2016
http://news.discovery.com/animals/pets/worlds-oldest-cat-anointed-by-guinness-160511.htm

Cat World Records
https://youtu.be/25oPIJlOliA

Yours,

Paul H.

Thursday, 12 May 2016

Permian - Triassic Mayhem: Earth's Largest Mass Extinction

Permian - Triassic Mayhem: Earth's Largest Mass Extinction

Permian - Triassic Mayhem: Earth's Largest Mass Extinction
Beniot Beauchamp, Ph.D. - University of Calgary
Royal Tyrrell Museum Speaker Series 2013
Permian - Triassic Mayhem: Lead-up, Catastrophe and
Aftermath of the Earths Largest Mass Extinction viewed
from Arctic Canada, Febrary 11, 2013
https://www.youtube.com/watch?v=J8rynQqg9x8

Some papers are:

Beauchamp, B., Henderson, C.M., Grasby, S.E., Gates, L.T.,
Beatty, T.W., Utting, J., and James, N.P., 2009, Late Permian
sedimentation in the Sverdrup Basin, Cana- dian Arctic:
The Lindström and Black Stripe Forma- tions: Bulletin of
Canadian Petroleum Geology, v. 57, p. 167–191,
doi:10.2113/gscpgbull.57.2.167.
https://www.researchgate.net/publication/250084443_Late_Permian_Sedimentation_in_the_Sverdrup_Basin_Canadian_Arctic_The_Lindstrom_and_Black_Stripe_Formations
https://www.researchgate.net/profile/Benoit_Beauchamp

Grasby, S.E., Sanei, H., and Beauchamp, B., 2011, Catastrophic
dispersion of coal fly ash into oceans during the latest Permian
extinction: Nature Geoscience, v. 4, p. 104–107, doi:10.1038/ngeo1069.
Volume 153 / Special Issue 02 / March 2016, pp 285-297
https://www.researchgate.net/publication/49120396_Catastrophic_dispersion_of_coal_fly_ash_into_oceans_during_the_latest_Permian_extinction

Grasby, S. E., B. Beauchamp, D. P. G. Bond, P. B. Wignall, and
H. Sanei, 2016, Mercury anomalies associated with three
extinction events (Capitanian Crisis, Latest Permian Extinction
and the Smithian/Spathian Extinction) in NW Pangea.
Geological Magazine. vol. 153, no. 2, pp. 285-297.
https://www.researchgate.net/publication/282628853_Mercury_anomalies_associated_with_three_extinction_events_Capitanian_Crisis_Latest_Permian_Extinction_and_the_SmithianSpathian_Extinction_in_NW_Pangea
https://www.researchgate.net/profile/Benoit_Beauchamp

Beauchamp, B., and Baud, A., 2002, Growth and demise of
Permian biogenic chert along northwest Pangea: Evidence for
end-Permian collapse of thermohaline circulation: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 184, p. 37–63, doi:10.1016/S0031-0182
(02)00245-6.
https://www.researchgate.net/publication/223364925_Growth_and_demise_of_Permian_biogenic_chert_along_northwest_Pangaea_evidence_for_end-Permian_collapse_of_thermohaline_circulation

https://www.researchgate.net/profile/Benoit_Beauchamp

Yours,
Paul H.

Ames Impact Structure, Oklahoma, Symposium Online As PDF File

Ames Impact Structure, Oklahoma, Symposium Online As PDF File

The symposium is:

Johnson, K. S., and J. A. Campbell, 1997, Ames Structure in Northwest Oklahoma and Similar Features: Origin and Petroleum Production (1995 Symposium). Proceedings of a symposium held March 28-29, 1995, in Norman, Oklahoma. Circular no. 100. Oklahoma Geological Survey,
The University of Oklahoma, Norman. ISSN 0078-4397

It is at:

http://www.ogs.ou.edu/pubsscanned/Circulars/Circular100.pdf
http://digitalprairie.ok.gov/cdm/ref/collection/stgovpub/id/104579

A paper about similar oil and gas reservoirs created
by extraterrestrial impacts is "High-Impact Reservoirs"
at https://goo.gl/cDqakL .

Yours,

Paul H.

Monday, 9 May 2016

ECORD Drilling Reaches Chicxulub Crater

ECORD Drilling Reaches Chicxulub Crater

Scientists hit pay dirt in drilling of dinosaur-killing
impact crater by Eric Hand, Science, May. 3, 2016
http://www.sciencemag.org/news/2016/05/scientists-hit-pay-dirt-drilling-dinosaur-killing-impact-crater

Geologists Find Clues In Crater Left By Dinosaur-Killing Asteroid
All Things Considered, NPR, May 6, 2016
http://www.npr.org/sections/thetwo-way/2016/05/06/476871766/geologists-find-clues-in-crater-left-by-dinosaur-killing-asteroid

What Happened To The Dinosaurs? Here and Now, April 7, 2016
http://hereandnow.wbur.org/2016/04/07/mexico-crater-dinosaur-research

Yours,

Paul H

Friday, 6 May 2016

Hadean Detrital Zircons – Impacts Not Plate Tectonics ?

Hadean Detrital Zircons – Impacts Not Plate Tectonics ?

Origin of Earth's oldest crystals
Trinity College Dublin, April 28, 2016
http://www.sciencealert.com/there-s-a-new-theory-about-how-the-earth-s-oldest-crystals-were-formed
http://www.livescience.com/54648-oldest-crystals-formed-in-asteroid-craters.html
http://phys.org/news/2016-05-oldest-crystals-world.html

Kenny, G. G., M. J. Whitehouse, and B. S. Kamber, 2016,
Differentiated impact melt sheets may be a potential
source of Hadean detrital zircon. Geology. First published
online April 28, 2016, doi: 10.1130/G37898.1
http://geology.gsapubs.org/content/early/2016/04/27/G37898.1

Kenny, G. G., M. J. Whitehouse, and B. S. Kamber, 2016,
Differentiated impact melt sheets may be a potential
Source of Hadean detrital zircon population. 47th
Lunar and Planetary Science Conference (2016).
http://www.hou.usra.edu/meetings/lpsc2016/pdf/2473.pdf

Yours,

Paul H.

Monday, 25 April 2016

Weaubleau-Osceola Impact Structure Guidebook PDF File

Weaubleau-Osceola Impact Structure Guidebook PDF File

Evans, K. R., K. L. Mickus, C. W. Rovey II, and G. H. Davis
2003, Field Trip I: The Weaubleau-Osceola Structure:
Evidence of a Mississippian Meteorite Impact in
Southwestern Missouri, pp. 1-30, Association of Missouri
Geologists Field Trip Guidebook 50th Annual Meeting
Springfield, Missouri September 26-27, 2003. Report of
Investigation No. 75 and Guidebook No. 26
Missouri Department of Natural Resources,Rollo, Missouri
http://www.missourigeologists.org/Meeting2003/RI-75(2003AMGguidebook).pdf

Other guidebooks about Missouri geology can be found at:
Association of Missouri Geologists Field Trips and Guidebooks
http://www.missourigeologists.org/FieldtripsandGuidebooks.htm

Yours,

Paul H.

Sunday, 24 April 2016

PDF File of Crooked Creek Impact Structure, Missouri, Guidebook

PDF File of Crooked Creek Impact Structure, Missouri, Guidebook

Mulvany, 2004 (Gillman, J., editor), Association of Missouri Geologists Field Trip Guidebook, 51st Annual Meeting, Rolla, Missouri, October 1-2, 2004, 2004, Missouri Department of Natural Resources, Geological Survey and Resource Assessment Division. PDF file at:
http://www.missourigeologists.org/Meeting2004/AMGguidebook2004.pdf

Also, there is:

Kiilsgaard, T. H., Heyl, A. V. and Brock, M. R., 1962, The Crooked Creek disturbance, southeast Missouri. U.S. Geological Survey Professional Paper 450-E, p. E14-E19.
http://pubs.usgs.gov/pp/0450e/report.pdf

An informative web page is at:

Crooked Creek Impact Crater, Missouri
http://impactcraters.us/crooked_creek_missouri
http://impactcraters.us/home

Yours,

Paul H.

Friday, 22 April 2016

Dental Disparity Saved Birds From K-Pg Extinction Event

Dental Disparity Saved Birds From K-Pg Extinction Event

Press Releases
New Royal Tyrrell Museum research investigates the pace of the dinosaur extinction, and why birds may have survived
https://royaltyrrellmuseum.wordpress.com/2016/04/21/new-royal-tyrrell-museum-research-investigates-the-pace-of-the-dinosaur-extinction-and-why-birds-may-have-survived/


Bird-like Dinosaurs with Teeth Died Off Abruptly, Beaked Birds Survived. Philip J. Currie Dinosaur Museum
https://dinomuseum.ca/wp-content/uploads/2016/04/Larson-2016-Bird-Dinosaur-Press-Release-PJCDM.pdf


Journal Reference:

Larson, D.W., Brown, C.M., and Evans, D.C. 2016. Dental disparity and ecological stability in bird-like dinosaurs prior to the end- Cretaceous mass extinction. Current Biology 26, 1–9.
http://www.cell.com/current-biology/fulltext/S0960-9822(16)30249-4
http://www.birdforum.net/showthread.php?t=323286