Crustal Structure in the Eastern Colorado Plateaus Provence from Seismic-Refraction Measurements

By John C. Roller

1964

Abstract

A reversed seismic-refraction profile was recorded in the Colorado Plateaus Province from Hanksville, Utah, to Chinle, Arizona, The velocity of P_g is 6.2 km/sec, and the true velocity of P_n is 7.8 km/sec, Waves identified as reflections indicate that an intermediate layer in the crust has a velocity of approximately 6.8 km/sec. Thickness of the crust is 43 km at Chinle and 40 km at Hanksville. The P_n velocity in the Colorado Plateaus Province is the same as that in the Basin and Range Province, but is significantly lower than P_n in the High Plains of Colorado.

First posted November 16, 2012

Report PDF (12 MB)

This report is available only on the Web.

For additional information:
Contact Information, Earthquake Science Center, Menlo Park Science Center
U.S. Geological Survey
345 Middlefield Road, MS 977
Menlo Park, California 94025
http://earthquake.usgs.gov/

This report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.

Suggested citation:

Roller, J.C., 1964, Crustal structure in the eastern Colorado Plateaus Provence from seismic-refraction measurements: U.S. Geological Survey Crustal Studies Technical Letter Number 19, 28 p. (Available at https://pubs.usgs.gov/misc/tl/0019/.)

Contents

Abstract

Introduction

Geology and Physiography

Information on the Seismograms

Depth Calculations

Amplitudes

Conclusions

References

In cooperation with the Defense Advanced Research Projects Agency

Crustal Structure in the Eastern Colorado Plateaus Provence from Seismic-Refraction Measurements

By John C. Roller

1964

Abstract

Suggested citation:

Contents