A note on a mineralogical analysis of the sediments associated with the Plata River and Patos Lagoon outflows
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
20/10/2012
20/10/2012
2008
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Resumo |
Riverine waters bring to seas a variety of suspended materials, which are ultimately deposited on the shelf or exported to the deep ocean. Investigation of the mineralogical contents of these continental-borne constituents on seafloors may reveal valuable information about the environmental conditions in the drainage basin. In this note we report results of X-ray diffraction and other analysis of sediments in bottom samples collected on the continental shelf under influence of the Plata River and the Patos Lagoon, in South America. The analysis reveals that non-clay materials are mostly concentrated south of 33 degrees S, while clay sediments are relatively more abundant further north. We propose that such distributions are controlled by the circulation pattern and water mass distribution of the lower and upper layers, respectively. (C) 2008 Elsevier Ltd. All rights reserved. |
Identificador |
CONTINENTAL SHELF RESEARCH, v.28, n.13, p.1687-1691, 2008 0278-4343 http://producao.usp.br/handle/BDPI/32043 10.1016/j.csr.2008.03.014 |
Idioma(s) |
eng |
Publicador |
PERGAMON-ELSEVIER SCIENCE LTD |
Relação |
Continental Shelf Research |
Direitos |
restrictedAccess Copyright PERGAMON-ELSEVIER SCIENCE LTD |
Palavras-Chave | #clay minerals #Rio de la Plata #fresh water plume #Southwest Atlantic continental shelf #SOUTH-ATLANTIC #RECORD #Oceanography |
Tipo |
article original article publishedVersion |