Neogene Radiolarians from the Kerguelen Plateau

Abundant, generally well-preserved radiolarians from Sites 737, 744, 745, 746, 747, 748, and 751 were used in stratigraphic analysis of Neogene, and particularly middle Miocene to Holocene, Kerguelen Plateau sediments. The composite Kerguelen section is more complete than the Weddell Sea sections re...

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Bibliographic Details
Main Author: Lazarus, David B
Format: Dataset
Language:English
Published: PANGAEA 1992
Subjects:
119-744A
119-745B
119-746A
120-747A
120-747B
120-748A
120-748B
120-751A
DRILL
Drilling/drill rig
Indian Ocean
Joides Resolution
Leg119
Leg120
Ocean Drilling Program
ODP
South Indian Ridge
South Indian Ocean
Weddell Sea
Kerguelen
Indian
Weddell
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.728881
https://doi.org/10.1594/PANGAEA.728881
Description
Summary:Abundant, generally well-preserved radiolarians from Sites 737, 744, 745, 746, 747, 748, and 751 were used in stratigraphic analysis of Neogene, and particularly middle Miocene to Holocene, Kerguelen Plateau sediments. The composite Kerguelen section is more complete than the Weddell Sea sections recovered by Leg 113, and the radiolarians are better preserved. Leg 113 radiolarian zonations of Weddell Sea sites were applicable with only slight modification, and three new zones - Siphonosphaera vesuvius, Acrosphaeral labrata, and Amphymenium challengerae - are proposed for the latest Miocene. Geologic age estimates are given for all radiolarian zones used. Major hiatuses affecting most sites were seen within the middle Miocene, in the latest Miocene, and latest Pliocene. Five new species are described: Acrosphaera? labrata, Acrosphaera? mercurius, Siphonosphaera vesuvius, Actinomma? magnifenestra, and Helotholus? haysi.

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