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(Article of periodic en Anglais - 2011)

Document title

Magnetic properties of the youngest sapropel S1 in the Ionian and Adriatic Sea : inference for the timing and mechanism of sapropel formation

Authors(s) and Affiliation(s)

VIGLIOTTI L. ; ASIOLI A. ; BERGAMI C. ; CAPOTONDI L. ; PIVA A. ;

Abstract

The youngest sapropel S1 has been investigated by a multiproxy study on a core (ET99-M11) collected in the western Ionian Sea at a water depth of 2800 m, which is considered to represent anoxic conditions in the eastern Mediterranean at the time of sapropel formation. The comparison among the different proxies indicates that rock magnetic parameters can be unambiguously used to precisely identify sapropel layers, even if no iron sulphide phases have been precipitated as a bi-product of diagenetic breakdown of organic matter. By using the magnetic parameters as indicators of paleoredox conditions the AA. compare the results with cores collected in the central and southern Adriatic Sea at different water depths. The formation of the Adriatic Deep Water driven by decreasing solar radiation output is considered responsible for the interruption and end of sapropel formation. - (NF)

Source

Article of periodic

published at : Bollettino della Società geologica italiana / ISSN 0037-8763 / CODEN BOGIAT

Editor : Società geologica italiana, Roma - ITALIE (1882- 2008)

Millesime : 2011, vol. 130, no1 [pp. 106-118]

Bibliographic references : 69 ref.

Collation : 7 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 5205

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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