Our changing continent
Monograph
By: Water Resources Division, U.S. Geological Survey
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Abstract
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 |