Accession Number:

AD0779747

Title:

Far Field Studies - Comparative Analysis of Upper Mantle Q and Other Geophysical Data on the Eurasian Continent

Descriptive Note:

Semi-annual technical rept. no. 1 (Part A), 1 May-31 Oct 1973

Corporate Author:

TEXAS INSTRUMENTS INC DALLAS EQUIPMENT GROUP

Personal Author(s):

Report Date:

1973-11-15

Pagination or Media Count:

52.0

Abstract:

A review and comparative analysis of published reports providing research data within Eurasia concerning the upper mantle geophysics shows the following High upper mantle P-wave velocities, early relative teleseismic P- wave delays, low heat flow, absence of low-resistivity upper mantle layers, and low P-wave absorption are representative of the shield, platform, and massif regions of Eurasia Opposite relative values of the parameters given above correspond to the active structural and volcanic regions, most notably the Sea of Okholsk - Sea of Japan - Kamchatka - Kuril-Japan region, around Lake Baykal, and along the Southern to Southwestern border of the USSR. Maps and brief discussions of the parameters mentioned, including a regional estimate of upper mantle Q for P-waves, are given in the report.

Subject Categories:

  • Geology, Geochemistry and Mineralogy
  • Seismology
  • Seismic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE