Seismology program; California Division of Mines and Geology

Earthquake Information Bulletin (USGS)


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The year 1980 marked the centennial of the California Division of Mines and Geology (CDMG) and a decade of the Division's involvement in seismology. Factors which contributed to the formation of a Seismology Group within CDMG included increased concerns for environmental and earthquake safety, interest in earthquake prediction, the 1971 San Fernando earthquake and the 1973 publication by CDMG of an urban geology master plan for California. Reasons to be concerned about California's earthquake problem are demonstrated by the accompanying table and the figures. Recent seismicity in California, the Southern California uplift reflecting changes in crustal strain, and other possible earthquake precursors have heightened concern among scientific and governmental groups about the possible occurrence of a major damaging earthquake )M>7) in California. 

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Seismology program; California Division of Mines and Geology
Series title Earthquake Information Bulletin (USGS)
Volume 13
Issue 2
Year Published 1981
Language English
Publisher U.S Geological Survey
Description 4 p.
First page 65
Last page 68
Online Only (Y/N) N
Additional Online Files (Y/N) N