Early to middle Miocene radiolarian stratigraphy of the Kerguelen Plateau, Southern Ocean

Early to middle Miocene radiolarian assemblages were examined at three sites (747, 748, and 751) that were cored during Ocean Drilling Program Leg 120 south of the present polar frontal zone on the Kerguelen Plateau (Indian sector of the Southern Ocean). The radiolarian biostratigraphic study relies...

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Bibliographic Details
Main Author: Abelmann, Andrea
Format: Dataset
Language:English
Published: PANGAEA 1992
Subjects:
120-747A
120-748B
120-751A
DRILL
Drilling/drill rig
Joides Resolution
Leg120
Ocean Drilling Program
ODP
South Indian Ridge
South Indian Ocean
Southern Ocean
Kerguelen
Indian
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.728857
https://doi.org/10.1594/PANGAEA.728857
Description
Summary:Early to middle Miocene radiolarian assemblages were examined at three sites (747, 748, and 751) that were cored during Ocean Drilling Program Leg 120 south of the present polar frontal zone on the Kerguelen Plateau (Indian sector of the Southern Ocean). The radiolarian biostratigraphic study relies on a radiolarian zonation recently developed on Leg 113 materials in the Atlantic sector of the Southern Ocean, which is correlated with the geomagnetic time scale. New radiolarian biostratigraphic data also considering the established geomagnetic polarity record were used to improve and emend the age calibration of some lower Miocene radiolarian zones and a redefined middle Miocene radiolarian zonation is proposed. Based on these results, a revised age assignment of the lower Miocene sections drilled at Leg 113 Sites 689 and 690 is proposed.

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