Explanatory text to accompany the Geologic map of the United States

Professional Paper 901
By:  and 



The U.S. Geological Survey has published a new Geologic Map of the United States (exclusive of Alaska and Hawaii) on a scale of 1:2,500,000, which was compiled between 1967 and 1971 by Philip B. King and Helen M. Beikman, with geologic cartography by Gertrude J. Edmonston. The map replaces the now outdated Geologic Map of the United States on the same scale, which was compiled by George W. Stose and Olof A. Ljungstedt and was issued by the U.S. Geological Survey in 1932.

This report is intended to supplement the new map and to provide background information to assist its user in interpreting it. It describes the historical antecedents of the map and the sources from which the map was compiled and discusses various general topics related to it. Succeeding reports will amplify the necessarily brief descriptions of the map units which appear in its legend and will deal at length with specific geological problems in the United States, insofar as they relate to representation of the features in map form.


Publication type Report
Publication Subtype USGS Numbered Series
Title Explanatory text to accompany the Geologic map of the United States
Series title Professional Paper
Series number 901
DOI 10.3133/pp901
Year Published 1974
Language English
Publisher U.S. Government Printing Office
Publisher location Washington, D.C.
Description iii, 40 p.
Online Only (Y/N) N
Additional Online Files (Y/N) N
Google Analytic Metrics Metrics page
Additional publication details