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High resolution magnetostratigraphy of Caribbean Plio-Pleistocene deep-sea sediments

Dennis V. Kent; Dann J. Spariosu

Title:
High resolution magnetostratigraphy of Caribbean Plio-Pleistocene deep-sea sediments
Author(s):
Kent, Dennis V.
Spariosu, Dann J.
Date:
Type:
Articles
Department:
Lamont-Doherty Earth Observatory
Volume:
42
Permanent URL:
Book/Journal Title:
Palaeogeography, Palaeoclimatology, Palaeoecology
Abstract:
The ability of the hydraulic piston corer (HPC) to recover virtually undisturbed sections of semi-consolidated deep-sea sediments suitable for paleomagnetic study was first demonstrated on Leg 64 and Leg 68 of the Glomar Challenger. Reported here is a complete magnetostratigraphy for a 150 m section of Plio-Pleistocene pelagic deposits recovered at Site 502 in the Caribbean. Correlation of the magnetic polarity zones to the well-dated standard sequence of geomagnetic polarity reversals provides a precise geochronological framework for age-calibration of calcareous plankton fossil datums and which, combined with the moderate to high sedimentation rates (24–38 m/m.y.), present an opportunity to study paleoenvironmental variations in the Early Pleistocene and the Pliocene with a time control and resolution heretofore possible only in Late Pleistocene deep-sea sediment cores.
Subject(s):
Physical oceanography
Geophysics
Sedimentary geology
Publisher DOI:
http://dx.doi.org/10.1016/0031-0182(83)90038-X
Item views:
104
Metadata:
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