Dominik, J.; Stoffers, P.; Glasby, G. P. (1983): Clay mineralogy and occurrence of palygorskite in deep-sea sediments from the eastern Indian Ocean; collected during D.S.D.P. legs 22, 26 and 27. Gustav Fischer Verlag, Jena, Federal Republic of Germany, Chemie der Erde, 42 (1), 1-14, georefid:1985-060147
Abstract:
Detailed X-ray examination of the clay mineral composition of eight DSDP (super 1) ) sediment cores allows us to outline the main features of the clay sedimentation in the eastern Indian Ocean since Cretaceous time. Smectite is by far the most abundant clay mineral in Cretaceous sediments. Tertiary sediments are characterized by a large terrigenous input of kaolinite indicating tropical wheathering conditions on the adjacent land areas. Since the Neogene, a freshly eroded clay mineral assemblage dominated by illite has been supplied to the northern part of the Wharton Basin, predominantly by distant turbidites from the Bengal Fan. Palygorskite is a common mineral in the eastern Indian Ocean sediments. A diagenetic origin is suggested for the palygorskite in the Upper Cretaceous to Eocene sediments whereas the palygorskite-sepiolite found in Miocene sediments is thought to be of detrital origin.
Coverage:
West: 20.0000 East: 147.0000 North: 25.0000 South: -60.0000
West: NaN East: NaN North: NaN South: NaN
Relations:
Data access: