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Mineralogy of Soil Profiles: Iredell and Durham Soils from the Piedmont Province of North Carolina

Published online by Cambridge University Press:  01 January 2024

B. N. Rolfe
B. N. Rolfe*
Affiliation:
U. S. Geological Survey, Fort Collins, Colorado, USA
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Abstract

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A comparative study of two soil profiles derived from a biotite-granite and from a metagabbro in the Piedmont Province of North Carolina was made. Intensive weathering of the granite has yielded a soil (Durham) with a clay fraction composed of a kaolinite-halloysite intermediate, mica, and quartz. Restricted weathering of the metagabbro has resulted in a soil (Iredell) with a clay fraction composed of a complex assemblage of chlorite, beidellite, vermiculite, interlayered talc-like minerals, and quartz.

The data indicate that the Durham soil is derived from the severe alteration of a granite and that it represents an advanced stage in soil formation. The Iredell soil has been derived from the less active weathering of a metagabbro and represents a retarded, youthful stage in soil formation. The clay mineral assemblage of the Durham is that of a comparatively stable end product of weathering; that of the Iredell is indicative of a complex, unstable early stage in weathering.

Type
Article
Information
Clays and Clay Minerals (National Conference on Clays and Clay Minerals) , Volume 2: Publication 327, University of Missouri, Columbia, Missouri, October 15-17, 1953 , February 1953 , pp. 183 - 189
Copyright
Copyright © The Clay Minerals Society 1953

Footnotes

Publication authorized by Director, U. S. Geological Survey.

References

Brindley, G. W., and Robinson, K (1951) The chlorite minerals: In “X-ray identification and crystal structures of clay minerals,” The Mineralogical Society of Great Britain Monograph, Chap. 6, p. 173–198.Google Scholar
Cady, J. G. (1950) Rock weathering and soil formation in the North Carolina Piedmont region: Soil Sci. Soc. Amer. Proc., v. 15, p. 337–342.CrossRefGoogle Scholar
Grim, R. E. (1953) Clay mineralogy: McGraw-Hill Book Co., Inc., New York, 384 p.Google Scholar
Jeffries, C. D., and Jackson, M. L. (1949) Mineralogical analysis of soils: Soil Sci., v. 68, p. 57–73.CrossRefGoogle Scholar
Ross, C. D., and Hendricks, S. B. (1945) Minerals of the montmorillonite group: U. S. Geol. Survey Prof. Paper 205-B, p. 23–79.Google Scholar
Sand, L. B. (1952) Mineralogy and petrology of the residual kaolins of the southern Appalachian region: Ph.D. thesis, Penn. State College.Google Scholar
Walker, G. W. (1949) Distinction of vermiculites, chlorites, and montmorillonites in clays: Nature, v. 164, p. 577.CrossRefGoogle Scholar