Crustal structure in eastern Colorado from seismic-refraction measurements

Journal Article · Tue Oct 15 04:00:00 EDT 1963 · Journal of Geophysical Research

DOI:https://doi.org/10.1029/JZ068i020p05767· OSTI ID:4692770

Jackson, W. H.; Stewart, S. W.; Pakiser, L. C.

Seismic-refraction measurements were made at 117 spreads along a line trending north from a shot point near Lamar, Colorado, to near Sidney, Nebraska, between April and August 1961. Crystal thickness from computation based on first and prominent secondary arrivals is about 48 km. The speed of compressional waves in the upper layers of the crust ranges from 2.9 (near surface) to 6.1 km/ sec. Evidence was found for a crustal layer of compressionalwave velocity 6.7 km/ sec at a depth of about 28 km. The velocity of compressional waves in the upper- mantle rocks is about 8.0 km/sec. (auth)

• Research Organization: Geological Survey, Denver
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-041002
• OSTI ID: 4692770
• Journal Information: Journal of Geophysical Research, Journal Name: Journal of Geophysical Research Journal Issue: 20 Vol. 68; ISSN 0148-0227
• Publisher: American Geophysical Union
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

COLORADO
DISTRIBUTION
EARTH
EARTH CRUST
GEOLOGY, MINERALOGY, AND METEOROLOGY
LAYERS
MEASURED VALUES
QUANTITATIVE ANALYSIS
REFRACTION
ROCKS
SEISMOLOGY
SHOCK WAVES
THICKNESS
UNDERGROUND EXPLOSIONS
USA
VELOCITY