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Chloritized Weathering Products of a New England Glacial Till

Published online by Cambridge University Press:  01 January 2024

R. M. Quigley  and
R. T. Martin
R. M. Quigley
Affiliation:
Soil Engineering Division, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
R. T. Martin
Affiliation:
Soil Engineering Division, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
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Abstract

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The clay mineralogy of a soil profile developed in a New England glacial till has been studied to a depth of 55 in. Degraded soil micas, probably produced by weathering, have been chloritized by both iron and aluminum hydroxide complexes. Aluminum and iron determinations and X-ray analyses indicate that iron chloritization has played the greater role. Citrate-extractable chlorite exists to a depth of 55 in. X-ray and heat stability data indicate that the chlorite is better developed or crystallized near the surface. X-ray and glycol retention data suggest that intense weathering at the surface has reduced the surface charge density of some of the degraded mica.

Type
Symposium on Occurrence and Origin of Vermiculite
Information
Clays and Clay Minerals (National Conference on Clays and Clay Minerals) , Volume 10 , February 1961 , pp. 107 - 116
Copyright
Copyright © Clay Minerals Society 1961

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