Calcareous nannofossils from ODP Leg 178

Sites 1096 and 1101, two hemipelagic sediment drift sites on the continental rise off the northwestern Pacific margin of the Antarctic Peninsula, contained calcareous nannofossils in the upper intervals of each site (downhole to 168.37 meters below seafloor [mbsf] in Hole 1096B and 121.1 mbsf in Hol...

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Bibliographic Details
Main Authors: Winter, Diane M, Wise, Sherwood W
Format: Dataset
Language:English
Published: PANGAEA 2001
Subjects:
178-1096
178-1096A
178-1096B
178-1101A
COMPCORE
Composite Core
DRILL
Drilling/drill rig
Joides Resolution
Leg178
Ocean Drilling Program
ODP
South Pacific Ocean
Antarctic
Antarctic Peninsula
Pacific
The Antarctic
Antarc*
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.737367
https://doi.org/10.1594/PANGAEA.737367
Description
Summary:Sites 1096 and 1101, two hemipelagic sediment drift sites on the continental rise off the northwestern Pacific margin of the Antarctic Peninsula, contained calcareous nannofossils in the upper intervals of each site (downhole to 168.37 meters below seafloor [mbsf] in Hole 1096B and 121.1 mbsf in Hole 1101A). The occurrences were sporadic and observed to be confined to fine-grained intervals. These intervals were interpreted on board to be interglacial and often contained foraminifers as well. Calcareous nannofossils exhibited a reliable stratigraphy during an interval when other fossils groups were absent, quite rare, or reworked. In total, nine events and three zones were recognized in this study. The base of the Pleistocene was not recorded with calcareous nannofossils, the oldest datum being the first occurrence of medium Gephyrocapsa spp. at 1.69 Ma. All events have been correlated to the paleomagnetic record for each site.

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