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Seismic-refraction study of suspected drift-filled bedrock valleys in Ramsey County, Minnesota

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Seismic-refraction study of suspected drift-filled bedrock valleys in Ramsey County, Minnesota; 1985; WRI; 85-4107; Woodward, D. G.

Summary

Seismic-refraction surveys were made across suspected buried, drift-filled bedrock valleys believed to underlie two sites of known ground-water contamination the Twin Cities Army Ammunition Plant (TCAAP) near New Brighton and the former Koppers Coke Plant in St. Paul, Ramsey County, Minnesota. Refraction data were collected along two lines at each site; each line traversed the axis of a suspected valley. Drift-filled bedrock valleys were thought to incise the Prairie du Chien-Jordan aquifer to an altitude between 500 and 560 feet above sea level at the TCAAP site. The interpretation of one seismic profile indicates that a valley probably does not exist under the area surveyed; the modeled depth profile shows the bedrock surface ranging [...]

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Author :
D.G. Woodward
Publisher :
U.S. Geological Survey

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Additional Information

Identifiers

Type Scheme Key
local-index unknown wri854107
local-pk unknown 30584
series unknown Water-Resources Investigations Report

Citation Extension

journalWater-Resources Investigations Report
parts
typePublication Place
valueSt. Paul, MN
languageEnglish
citationTypeReport

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