Clay mineral stratigraphy in the Permo-Triassic red bed sequences of BNOC 72/10-1A, Western Approaches, and the south Devon Coast
- 1 March 1982
- journal article
- Published by Mineralogical Society in Clay Minerals
- Vol. 17 (1) , 79-89
- https://doi.org/10.1180/claymin.1982.017.1.08
Abstract
The Permo-Triassic red bed sequence penetrated in BNOC Well 72/10-1A, located in the Western Approaches, is divided into eight clay mineral zones. The zones are defined by variations in the clay assemblage in which iron- and magnesium-rich chlorite, corrensite and mica occur. This zonal sequence is matched mineralogically and stratigraphically with the pattern of clay mineral variation recorded from the Permo-Triassic sediments of the south Devon coast, some 500 km distant.Keywords
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