Our changing continent




Where were the land areas and oceans of the North American Continent one million years ago, compared to our present geography? Was North America always about the same size and shape as it is today? To answer these questions, we must construct maps of the lands and sea that existed during the past ages. This process of reconstructing ancient geography is called paleogeography (from the Greek word "palaios," meaning ancient).
Publication type Report
Publication Subtype USGS Unnumbered Series
Title Our changing continent
Series title Monograph
DOI 10.3133/70039574
Year Published 1969
Language English
Publisher U.S. Government Printing Office
Publisher location Washington, D.C.
Description 15 p.; ill.; maps (col.)
Other Geospatial North America
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