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LC Classification is
Science -- Geology -- Study and teaching. Research
6 - 10
This portal provides links to a variety of information on the United States Geological Survey (USGS). There is a brief overview of the USGS mission and vision, links to news articles and press releases, and a link to...
USGS Topographic Maps
The United States Geological Survey (USGS) is the primary civilian mapping agency of the United States. Materials available at this site include general information about topographic mapping, and information about USGS...
Plate Tectonics: Lake Mead, Nevada
Earth's surface has changed in countless ways during the 4.6 billion years since it formed, and it continues to change today. This video segment looks at some of the geologic processes that have shaped the landscape...
Plate Tectonics: Further Evidence
Early evidence showing striking similarities between regions on opposite sides of vast oceans suggested that in Earth's distant past what are now separate continents may once have been connected. However, this evidence...
Plate Tectonics: The Scientist Behind the Theory
The scientific community does not always embrace every new idea that comes along. Alfred Wegener, the scientist who first proposed the theory of continental drift, learned that the hard way. This video segment shows how...
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