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Variation des sources de sediments dans le detroit de Makassar (Indonesie) au quaternaire recent: Role des facteurs morphostructuraux et eustatiques ArchiMer
Faugeres, J-c; Gayet, J; Gonthier, E; Latouche, C; Maillet, N.
Mineralogical analyses of sediments from the Makassar Strait, collected during the Corindon and Misedor cruises (dredges, piston and box cores) show the existing differences between sediments supplied from Kalimantan in the West and sediments supplied from Sulawesi in the East. The Kalimantan source is characterized by quartzitic sand, with rare feldspars, heavy minerals consisting mainly of pyroxene (hypersthene) and amphibole and predominant illite-kaolinite in the clay mineral assemblage. In contrast, the Sulawesi source differs by a great abundance of feldspars, lithoclasts and micas with predominant amphibole and pyroxene (augite) and major illite-chlorite clay minerals.
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Ano: 1990 URL: http://archimer.ifremer.fr/doc/00268/37924/36005.pdf
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La sedimentation quaternaire recente dans le detroit de Makassar (Indonesie) ArchiMer
Gayet, J; Faugeres, J-c; Gonthier, E.
Corings have been obtained during the Misedor Cruise in the Strait of Makassar (Indonesia). Previous works showed that Recent Quaternary sediments originated from Kalimantan and Sulawesi. These deposits are associated either with settling processes or with paleogeographic events related to eustatic variations. At low sea level, gravity flow from Kalimantan supply deep-sea zones where deposits are arranged locally in stratodecreasing successions. During the rise of the sea level, inputs change both qualitatively and quantitatively. In addition to river-borne inputs (Mahakam), one can observe reworked sediments originating from the continental shelf in the course of its immersion. At high sea level (Holocene) inputs issued from Kalimantan contribute to the...
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Ano: 1990 URL: http://archimer.ifremer.fr/doc/00268/37926/36007.pdf
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Impact de la trangression holocene sur la sedimentation dans le detroit de Makassar (Indonesie) ArchiMer
Gayet, J; Carbonel, P; Duprat, J; Labeyrie, L; Faugeres, J-c; Gonthier, E; Moyes, J.
Biomarker data associated with isotopic curve partial differential super(18)O served to establish a stratigraphic scale and thereby a chronology of fluctuations in the circulation and sedimentation of the Kalimantan continental rise throughout the last climatic cycle. During the glacial maximum, period of low sea-level sediments were deposited by turbidity currents originating from Kalimantan. During deglaciation, during rise of the sea-level and more particularly in the Holocene, material issued from Kalimantan either contributed to the building of the Mahakam delta or was dispersed over the shelf. Sulawesi inputs, less abundant and mineralogically different from Kalimantan material, were observed onto the Kalimantan rise. During this same period,...
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Ano: 1990 URL: http://archimer.ifremer.fr/doc/00268/37898/35979.pdf
Registros recuperados: 3
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