Biostratigraphic datums and magnetic properties of ODP Leg 178 sites

During Ocean Drilling Program (ODP) Leg 178, eight holes were drilled at three sites (1095, 1096, and 1101) on the continental rise along the western Antarctic Peninsula. The rise sediments proved to be good paleomagnetic recorders and provided continuous magnetostratigraphic records at all three si...

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Bibliographic Details
Main Authors: Iwai, Masao, Acton, Gary D, Lazarus, David B, Osterman, Lisa Ellen, Williams, Trevor J
Format: Other/Unknown Material
Language:English
Published: PANGAEA 2002
Subjects:
Ocean Drilling Program
ODP
Antarc*
Antarctic
Antarctic Peninsula
Southern Ocean
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.787319
https://doi.org/10.1594/PANGAEA.787319
Description
Summary:During Ocean Drilling Program (ODP) Leg 178, eight holes were drilled at three sites (1095, 1096, and 1101) on the continental rise along the western Antarctic Peninsula. The rise sediments proved to be good paleomagnetic recorders and provided continuous magnetostratigraphic records at all three sites. Biosiliceous microfossils, particularly diatoms and radiolarians, were present in the upper Miocene through lower Pliocene sections. In the upper Pliocene to Pleistocene sections, biosiliceous microfossils were rare but calcareous nannofossils and foraminifers were present. This paper summarizes the biostratigraphy and magnetostratigraphy of Leg 178 continental rise sites and is the first attempt at direct calibration of Antarctic biostratigraphic events to the geomagnetic polarity timescale in the Pacific sector of the Southern Ocean.

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