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U.S. Geological Survey common-depth-point seismic-reflection survey between Mississippi River miles 195 to 210 (R/V NEECHO, cruise NE-80-3)

Open-File Report 84-82

Prepared in cooperation with the U.S. Army Corps of Engineers
By:
and

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Abstract

In December 1980, the U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers (COE), conducted a seismic survey of the Mississippi River in the vicinity of Alton, Illinois, near St. Louis, Missouri (fig. 1). Seismic lines were run from the mouth of the Missouri River up the Mississippi River to a point approximately seven miles upriver from Lock and Dam No. 26 at Alton, Illinois (fig. 2a,b). Additional lines were run upriver from Lock and Dam No. 25 between the dam and River Mile 244, but these data are not reported because of mechanical problems with the larger sound-source equipment and inexact navigational control.

The objective of the cooperative study was to utilize marine common-depth-point (CDP), digital, and multichannel techniques to locate a monoclinal flexure of the Cap au Gres Fault that earlier had been interpreted from land seismic data to be in the vicinity of Lock and Dam No 26 (Shannon and Wilson, 1980). A second objective was to demonstrate that the marine seismic system could be used for making relatively deep penetration seismic-reflection surveys on shallow (less than 10-m water depth) inland waterways that have organic sediment floors.

Study Area

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
U.S. Geological Survey common-depth-point seismic-reflection survey between Mississippi River miles 195 to 210 (R/V NEECHO, cruise NE-80-3)
Series title:
Open-File Report
Series number:
84-82
Year Published:
1984
Language:
English
Publisher:
U.S. Geological Survey
Description:
5 p.
Country:
United States