Calcareous nannofossils and planktonic foraminifera of ODP Hole 132-810C

The 136 m of calcareous oozes recovered in Hole 810C span the interval from upper Maastrichtian to middle Pleistocene. Three major hiatuses interrupt the sequence, with the topmost part of the Maastrichtian through the entire lower Paleocene, most of the lower Eocene, and the entire middle Eocene th...

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Bibliographic Details
Main Authors: Premoli Silva, Isabella, Castradori, Davide, Spezzaferri, Silvia
Format: Other/Unknown Material
Language:English
Published: PANGAEA 1993
Subjects:
132-810C
DRILL
Drilling/drill rig
Joides Resolution
Leg132
North Pacific Ocean
Ocean Drilling Program
ODP
Planktonic foraminifera
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.785583
https://doi.org/10.1594/PANGAEA.785583
Description
Summary:The 136 m of calcareous oozes recovered in Hole 810C span the interval from upper Maastrichtian to middle Pleistocene. Three major hiatuses interrupt the sequence, with the topmost part of the Maastrichtian through the entire lower Paleocene, most of the lower Eocene, and the entire middle Eocene through most of the middle Miocene missing. Severe reworking and displacement affected the lower part of the succession from the Maastrichtian through the middle Miocene. Reworking and displacement gradually decreased in the upper portion. Calcareous nannofossil biostratigraphy enabled us to calibrate precisely the nearly complete magnetic reversal sequence of the Pliocene to the late Pleistocene. Two minor hiatuses detected by calcareous nannofossils across the Pliocene/Pleistocene boundary and in the upper lower Pleistocene, respectively, resulted in shortening of the Olduvai and Jaramillo Events within the Matuyama Chron of the magnetic reversal sequence.

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