Accession Number : AD0637601

Title :   INVESTIGATIONS ON THE SEISMICITY AND CRUSTAL AND SUBCRUSTAL STRUCTURES IN OREGON.

Descriptive Note : Final scientific rept., 15 Mar 63-30 Jun 66.

Corporate Author : OREGON STATE UNIV CORVALLIS

Personal Author(s) : Dehlinger,Peter

Report Date : 30 JUN 1966

Pagination or Media Count : 26

Abstract : The investigation involved studying seismograms from local earthquakes recorded at stations in the Pacific Northwest states, developing local travel-time curves for Oregon and adjacent regions, studying the dispersion of surface waves traveling across the Northwest states and determining crustal structures from the dispersion, making seismic refraction studies along the coast line of Oregon to determine crustal thicknesses and depths to the Mohorovicic discontinuity, studying selected local earthquakes, determining faulting associated with selected earthquakes, and making analyses of focal depths of local shocks. Preliminary studies were also made on the seismicity of Oregon. A special seismic station was established at Klamath Falls to aid in this study. As a result of this project, local travel-time curves have been established for Oregon and adjacent regions, regional crustal and subcrustal structures have been described for the major features in Oregon, and studies are well under way on the nature of faulting associated with earthquakes in the Pacific Northwest states and on new methods for determining focal depths in the Northwest. (Author)

Descriptors :   (*SEISMOLOGY, OREGON), (*GEOLOGY, OREGON), EARTHQUAKES, STRUCTURAL GEOLOGY, SEISMIC WAVES, PROPAGATION

Subject Categories : Geology, Geochemistry and Mineralogy
      Seismology

Distribution Statement : APPROVED FOR PUBLIC RELEASE