Dominik, J. et al. (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
Leg/Site/Hole:
Related Expeditions:
DSDP 22
Identifier:
ID:
1985-060147
Type:
georefid
Creator:
Name:
Dominik, J.
Affiliation:
Univ., Inst. Sedimentforsch., Heidelberg 6900, Federal Republic of Germany
Role:
author
Name:
Stoffers, P.
Affiliation:
Role:
author
Name:
Glasby, G. P.
Affiliation:
Role:
author
Identification:
Title:
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
Year:
1983
Source:
Chemie der Erde
Publisher:
Gustav Fischer Verlag, Jena, Federal Republic of Germany
Volume:
42
Issue:
1
Pages:
1-14
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.
Language:
English
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:25.0000 West:20.0000 East:
147.0000 South:-60.0000
Keywords: Oceanography; areal studies; Cenozoic; clay mineralogy; clay minerals; Cretaceous; Deep Sea Drilling Project; deep-sea sedimentation; diagenesis; East Indian Ocean; Eocene; expeditions; Indian Ocean; Leg 22; Leg 26; Leg 27; marine sedimentation; Mesozoic; Miocene; Neogene; Paleogene; palygorskite; processes; sedimentary petrology; sedimentation; sheet silicates; silicates; smectite; stratigraphy; Tertiary;
.