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GEOREF RECORD

Leaching of Wisconsin glacial gravels in eastern North America

Paul MacClintock
Leaching of Wisconsin glacial gravels in eastern North America
Bulletin of the Geological Society of America (May 1954) 65 (5): 369-383

Abstract

The depth to which a drift sheet has been leached of its limestone depends on many factors, one of which is length of time. If other variables could be reduced, depth of leaching might be used as criterion of age. Porous gravel in flat-topped hills was measured, and carbonate content ascertained. Observations fall into a pattern of three belts: a southern belt leached 11-13 feet, a middle one leached 5-8 feet, and a northern belt leached 1-4 feet. Within each belt where the drift contains limestone, the depth of leaching is fairly constant even though percentage of carbonates varies considerably. The study therefore suggests that the depth of leaching of gravel is a fairly good criterion of age, and that the southern belt is Tazewell, the middle belt is Cary, and the northern belt is Mankato.


ISSN: 1050-9747
Coden: BUGMAF
Serial Title: Bulletin of the Geological Society of America
Serial Volume: 65
Serial Issue: 5
Title: Leaching of Wisconsin glacial gravels in eastern North America
Author(s): MacClintock, Paul
Pages: 369-383
Published: 195405
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
Accession Number: 1959-019416
Categories: Quaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data from Bibliography and Index of North American Geology, U. S. Geological Survey, Reston, VA, United States
Update Code: 1959
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