Planktonic foraminifera in late Eocene to Pleistocene sediments of ODP Hole 120-747A and 120-749B

Late Eocene to Pleistocene planktonic foraminifers from Leg 120 Holes 747A and 749B on the Kerguelen Plateau were quantitatively analyzed. Microperforate tenuitellid forms dominate the Oligocene to middle Miocene, and 17 species (including the new species Tenuitella jamesi and Tenuitellinata selleyi...

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Bibliographic Details
Main Authors: Li, Qianyu, Radford, Sally S, Banner, Fred T
Format: Dataset
Language:English
Published: PANGAEA 1992
Subjects:
120-747A
120-749B
DRILL
Drilling/drill rig
Joides Resolution
Leg120
Ocean Drilling Program
ODP
South Indian Ridge
South Indian Ocean
Indian
Kerguelen
Planktonic foraminifera
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.728733
https://doi.org/10.1594/PANGAEA.728733
Description
Summary:Late Eocene to Pleistocene planktonic foraminifers from Leg 120 Holes 747A and 749B on the Kerguelen Plateau were quantitatively analyzed. Microperforate tenuitellid forms dominate the Oligocene to middle Miocene, and 17 species (including the new species Tenuitella jamesi and Tenuitellinata selleyi) are recorded. A lineage zonation of tenuitellid foraminifers is proposed as an alternative scheme for refinement of the Oligocene-Miocene biostratigraphy in high latitudes. Progressive or abrupt alterations in morphological characters within this lineage, producing different morphotypes or species, coincided with prolonged or sudden changes in paleoclimate. These microperforate planktonic foraminifers thus appear to have potential as indicators of cold-water masses and temperature fluctuations in post-Eocene oceans.

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