Planktonic foraminifera and sedimentology of ODP Hole 115-708A

Pleistocene and Pliocene sediments from the top five cores of Hole 708A, western Indian Ocean, were subsampled to compare the degree of carbonate dissolution in pelagic and turbidite sediments. The extent of dissolution for each sample was established using the percent of whole planktonic tests and...

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Bibliographic Details
Main Authors: Vilks, Gustavs, Buckley, D
Format: Other/Unknown Material
Language:English
Published: PANGAEA 1990
Subjects:
115-708A
DRILL
Drilling/drill rig
Joides Resolution
Leg115
Ocean Drilling Program
ODP
South Indian Ridge
South Indian Ocean
Indian
Planktonic foraminifera
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.755953
https://doi.org/10.1594/PANGAEA.755953
Description
Summary:Pleistocene and Pliocene sediments from the top five cores of Hole 708A, western Indian Ocean, were subsampled to compare the degree of carbonate dissolution in pelagic and turbidite sediments. The extent of dissolution for each sample was established using the percent of whole planktonic tests and an index based on the dominance of planktonic genera resistant to dissolution. Most samples show evidence for dissolution; foraminifers are significantly more dissolved in pelagic sediments than turbidites. Sorting of sediment is evident in those samples where the percentages of whole juvenile tests are high, but adult tests are low.

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