ISSN:
1573-1421
Keywords:
weathering
;
organic matter
;
isotopic composition
;
global biogeochemical cycles
;
manganese
;
iron
;
sulphur
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Geosciences
Notes:
Abstract Organic carbon, sulphur, δ13Corg, 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 δ13Corg 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00822494
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