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Magnetostratigraphy of Pliocene-Pleistocene sediments from the eastern Mediterranean Sea

Richter, Carl, Roberts, Andrew P., Stoner, Joseph S., Benning, L. David and Chi, Cung T. (1998) Magnetostratigraphy of Pliocene-Pleistocene sediments from the eastern Mediterranean Sea In, Robertson, A.H.F., Emeis, K.-C., Richter, C. and Camerlenghi, A. (eds.) Procs of ODP Scientific Results. Vol.160. Mediterranean I: covering Leg 160 of the cruises of the Drilling Vessel "Joides Resolution", Las Palmas, Gran Canaria, to Naples, Italy, Sites 963-973, 7 March - 3 May 1995. College Station, TX, USA, Texas A & M University Ocean Drilling Program pp. 61-73. (Proceedings of the Ocean Drilling Program Scientific Results, 160).

Record type: Book Section

Abstract

Detailed paleomagnetic investigations were conducted to develop a magnetostratigraphic framework for sedimentary
sequences that were recovered by hydraulic piston coring in the Eastern Mediterranean Sea (Ocean Drilling Program Leg 160).
A total of 1556 discrete samples from seven sites were subjected to detailed demagnetization, and high-resolution measurements
of the magnetic properties of >100 m of sediments were made using “U-channel” samples (measurements at 1-cm intervals).
The main magnetic carriers are probably an iron sulfide mineral and magnetite; occasional hematite were also present.
Between 10% and 50% of the samples displayed erratic magnetic behavior and could not be used for magnetostratigraphic
analysis. In addition, between 5% and 49% of the samples were completely overprinted by the coring process and had significantly
higher paleomagnetic inclinations (>75°) than would be expected for an axial dipole field (inclinations of 49°-52°) at the
site latitudes. Despite the coring-induced remagnetization and problems with the stability of magnetization, a sound magnetostratigraphic
chronology was established at some sites. This chronology provides support for stratigraphic correlations within
the basin and with onshore sequences as well as a temporal framework for paleoenvironmental studies that will enable assessment
of the origin of organic-rich sapropel layers frequently found in the Mediterranean Sea and adjacent onshore sequences.

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Published date: 1998

Identifiers

Local EPrints ID: 66110
URI: http://eprints.soton.ac.uk/id/eprint/66110
PURE UUID: 8dbe2143-398e-47cb-b89e-e498095a2c95

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Date deposited: 30 Apr 2009
Last modified: 19 Jul 2017 00:27

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Contributors

Author: Carl Richter
Author: Andrew P. Roberts
Author: Joseph S. Stoner
Author: L. David Benning
Author: Cung T. Chi
Editor: A.H.F. Robertson
Editor: K.-C. Emeis
Editor: C. Richter
Editor: A. Camerlenghi

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