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Extensive degradation and fractionation of organic matter during subsurface weathering

Van Os, B.J.H. and Middelburg, J.J. and De Lange, G.J. (1996) Extensive degradation and fractionation of organic matter during subsurface weathering. Aquatic Geochemistry, 1, 303-312. ISSN 1380-6165.

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Official URL: http://dx.doi.org/10.1007/BF00822494

Abstract

Organic carbon, sulphur, 13Corg, iron, manganese and calcium have been measured across a subsurface-weathering front in Pliocene sediments in southern Sicily. The results show an almost quantitative removal of Corg and sulphur and an increase in iron and manganese oxides over the weathering front, accompanied with a significant shift of the 13Corg to lower values. These data are among the first to support the rapid, extensive weathering of sedimentary organic matter and sulphur, a basic assumption made in global biogeochemical models on a Phanerozoic timescale.

Item Type:Article
Institutes:Nederlands Instituut voor Ecologie (NIOO)
ID Code:10440
Deposited On:25 Nov 2011 01:00
Last Modified:31 Mar 2014 10:53

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