This resource, authored by David Morrison, contains the National Aeronautics and Space Administration's Astrobiology Institute news story on new evidence of a 251-million year-old impact crater off the western coast of...
This is the second page of a three part brief review of the history of the Earth. It covers the time from the end of the Devonian Period to the close of the Mesozoic Era. The site describes this time interval in terms...
An Introduction and Virtual Field Trip to the Permian Reef Complex, Guadalupe and Delaware Mountains
Dr. Peter Scholle, a professor of geology at New Mexico Tech, oversees this site showcasing the geology of the Permian reefs of West Texas and southeastern New Mexico. The Salado Formation, part of this sequence, has...
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