Preliminary report on seismic-reflection studies of crustal structure in the western, central, and southern United States

Roller, J.C.; Strozier, O.P.; Jackson, W.H.; Healy, J.H.

Abstract:

During 1963 the U.S. Geological Survey, with the assistance of United ElectroDynamics, Inc., recorded five separate reversed seismic profiles. In addition to these profiles, the U.S. Geological Survey participated in a seismic-calibration program for the DRIBBLE experiment at Tatum Dome, Mississippi, a 20,000-pound shot near Dexter, Missouri, and in a cooperative seismic experiment in the Lake Superior region. This work is a continuation of the program started in 1961; however, the emphasis has shifted from a detailed study of the earth‘s crust in the western United States to a study of crustal structure in various geologic environments including the Wyoming thrust belt, Colorado Plateau, Central Lowlands, the Gulf Coastal Plain, and the southern part of the Canadian Shield. The U.S. Geological Survey has now completed reversed seismic-refraction profiles in nine different geologic provinces. These data present a promising indication that it may be possible to predict the crustal structure in unexplored areas by considering the regional geologic and physiographic environment. The following P_n velocities have been determined: 8.2 km/sec in the Wyoming thrust belt, 7.9 km/sec in the Colorado Plateau, 8.1 km/sec in the Central Lowlands, and about 8.2 km/sec in the Gulf Coastal Plain. The data from the Lake Superior region have not yet been interpreted.

Genre:

USGS Unnumbered Series

ProdID:

70039537

Citation Author:

Roller, J.C.; Strozier, O.P.; Jackson, W.H.; Healy, J.H.

Citation Contributing Office:

Earthquake Science Center

Citation Datum:

Citation Day:

Citation Edition:

Citation Editor:

Citation End Page:

Citation Issue:

Citation Keywords:

Citation Language:

English

Citation Larger Work Title:

Citation LatN:

0430000

Citation LatS:

0300000

Citation LonE:

-0891500

Citation LonW:

-1130000

Citation Month:

Citation No Pagination:

Citation Number Of Pages:

Citation Online Only Flag:

Citation Phsyical Description:

x, 55 p.

Citation Projection:

Citation Public Comments:

In cooperation with the Defense Advanced Research Projects Agency

Citation Publisher:

U.S. Geological Survey

Citation Series:

Crustal Studies Technical Letter

Citation Series Code:

Citation Series Number:

Citation Search Results Text:

Preliminary report on seismic-reflection studies of crustal structure in the western, central, and southern United States; 1963; USGS Unnumbered Series; 14; Roller, J.C.; Strozier, O.P.; Jackson, W.H.; Healy, J.H.