Médard Thiry
As distribution of clay minerals in modern oceans seems to be controlled by contemporary climates, marine clays in ancient deposits have been widely used to reconstruct palaeoclimates. In this review, we examine this question mainly from the continental origin of the clay minerals and show the difficulties of retrospective analysis of the influence of climate on common marine deposits. We examine successively how soils develop and behave, are reworked and palaeoweatherings are preserved, focusing the review on kaolinitic soils indicative of tropical wet climates. Several stages intervene between the time of clay mineral development in soils and their final deposition in the basin: The persistence over geological times of huge amounts of kaolinitic palaeoweathering materials in the landscapes may seriously alter the palaeoclimatic signal of kaolinite in the sedimentary record. Although the kaolinite deposited in recent sediments of the world oceans is consistent with wet climatic zones, this is mainly because the major kaolinitic and bauxitic palaeosurfaces.
@article{2a3f42ec-f1d4-43a4-8a34-5bbcdcc196e5,
title={Palaeoclimatic interpretation of clay minerals in marine deposits: an outlook from the continental origin},
author={Médard Thiry},
year={2000},
language={fr}
}TY - JOUR TI - Palaeoclimatic interpretation of clay minerals in marine deposits: an outlook from the continental origin AU - Médard Thiry PY - 2000 LA - fr ER -
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