Crustal Structure along the Great Basin-Colorado Plateau Transition from Seismic Refraction Profiling.
Abstract
A seismic refraction profile was recorded along the southern Wasatch Front, Utah, to investigate crustal structure in the transition zone between the Great Basin and the Colorado Plateau. Interpretation of refracted and reflected phases indicates a thin, 25 km crust, a low Pn velocity of 7.4 km per second and a crustal low-velocity zone. This model along with other geophysical data, is interpreted as evidence for a mantle upwarp that extends at least 50 km east of the physiographic boundary and is coincident with the Intermountain seismic belt. Identification of the crustal low-velocity layer documents this anomalous crustal feature throughout the transition zone between the Great Basin and the Middle Rocky Mountain-Colorado Plateau provinces in Utah. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1974
- Accession Number
- AD0781271
Entities
People
- G. R. Keller
- L. R. Braile
- R. B. Smith
Organizations
- University of Utah