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Origin of late Holocene fine-grained sediments on the French Guiana Shelf

Origin of late Holocene fine-grained sediments on the French Guiana Shelf

Continental Shelf Research 18(13): 0-1629

Marine muds deposited on the French Guiana coast mostly originate in the Amazon. Recent sediments are composed of (a) illite and chlorite of Andean origin and (b) kaolinite and smectite, principally from the Amazonian lowlands but also from the Guiana shield. The Sr–Nd isotopic studies confirm that these deposits are the result of the mixing between Andean and lowland materials. The importance of the source material can be estimated.

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Accession: 019629560

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DOI: 10.1016/s0278-4343(98)00053-3

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