--> Abstract: Cenozoic History of Sedimentation in the Indian Ocean Basins and Margins, by T. A. Davies and R. B. Kidd; #91012 (1992).

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ABSTRACT: Cenozoic History of Sedimentation in the Indian Ocean Basins and Margins

DAVIES, THOMAS A., University of Texas at Austin, Austin, TX, and ROBERT B. KIDD, University of Wales, Cardiff, U.K.

The broad features of the history of sedimentation in the Indian Ocean were defined by the results of the Deep Sea Drilling Project. Recent drilling by the Ocean Drilling Program has extended the region sampled to high southern latitudes, as well as providing core material of superior quality for further study. The Paleoceanographic Indian Ocean Synthesis project (PALIOS), a joint British/American effort, seeks to integrate the new drilling results with the older studies to produce a new oceanwide synthesis of the history of sedimentation in the region.

An important step has been to develop a comprehensive biostratigraphic/chronostratigraphic framework linking low and high latitude zonations based on both siliceous and calcareous microfossils. This allows events recorded at different sites to be compared against a common time scale. Data can then be plotted on new paleobathymetric reconstructions in order to examine in detail the distribution of various parameters in space and time. These parameters include sediment composition and accumulation rates, which could be linked to global factors such as climate, mountain building, or sea level change, and faunal and floral distributions, hiatuses, and volcanogenic sediment component distributions, which are more likely controlled by intra-ocean factors such as basin development, opening/c osing of gateways, or sills.

 

AAPG Search and Discovery Article #91012©1992 AAPG Annual Meeting, Calgary, Alberta, Canada, June 22-25, 1992 (2009)