Accession Number : AD0707885

Title :   CRUSTAL MORPHOLOGY OF CENTRAL ALASKA.

Descriptive Note : Master's thesis,

Corporate Author : ALASKA UNIV COLLEGE GEOPHYSICAL INST

Personal Author(s) : Davies,John N.

Report Date : MAY 1970

Pagination or Media Count : 67

Abstract : In July 1968 five temporary seismic stations were installed in central Alaska to augment the existing stations of the Seismology Laboratory of the University of Alaska. These stations, along with several stations of the United States Coast and Geodetic Survey, were utilized in a crustal study wherein the energy source was earthquakes. This method of study is suited to central Alaska because of its high seismicity and sparce road system. Apparent velocities were calculated between each pair of stations for which there was adequate data. Assuming a standard crust-mantle velocity contrast the dip of the Moho was calculated. The resulting depth distribution is generally consistent with isostacy, however, significant anomalies are explained by sea-floor spreading in the Gulf of Alaska. (Author)

Descriptors :   (*SEISMOLOGY, STRUCTURAL GEOLOGY), (*STRUCTURAL GEOLOGY, ALASKA), EARTHQUAKES, SEISMOLOGICAL STATIONS, EPICENTERS, NETWORKS, SEISMOMETERS, DATA PROCESSING, MOHOROVICIC DISCONTINUITY, ALASKA GULF

Subject Categories : Geology, Geochemistry and Mineralogy
      Seismology

Distribution Statement : APPROVED FOR PUBLIC RELEASE