Downloadable (PDF) World Map of Impact Craters, Volcanoes, and Tectonics

Paul bristolia at yahoo.com
Wed Sep 19 08:48:17 EDT 2007

The United States Geological Survey's world map of
volcanoes, earthquakes, impact craters, and plate
tectonics is available online as PDF files. It is:

This Dynamic Planet World Map of Volcanoes, Earthquakes,
Impact Craters, and Plate Tectonics, Third Edition, 2006,
By Tom Simkin, Robert I. Tilling, Peter R. Vogt, Stephen
H. Kirby, Paul Kimberly, and David B. Stewart, United
States Geological Survey Geologic Investigations Map
no. I-2800

http://pubs.usgs.gov/imap/2800/

"This map shows the Earth's physiographic features, the
current movements of its major tectonic plates, and the
locations of its volcanoes, earthquakes, and impact craters.
Over 1,500 volcanoes active during the past 10,000 years
are plotted on the map in four age categories. The locations
( epicenters) of over 24,000 earthquakes, largely from 1960
through 1990, are plotted in three magnitude categories and
in two depth ranges. This PDF file includes 6 pages of
explanatory and background information, a legend for the
map in landscape mode, schematic cross section, and the
map itself, which is 44 inches wide."

They have both screen and print versions of the PDF files.

Yours,

Paul H.