Interplay between sulphur sources in polysulphidemineralisation in the Lower Palaeozoic of the Anglo-Brabant Fold belt, Belgium

Polysulphide mineralisation in the Lower Palaeozoic of the Anglo-Brabant Fold belt is the subject of a detailed sulphur isotopic investigation to constrain possible sulphur sources. A distinction can be made between sedimentary pyrite, with low δ 34S values and identified as pyrite with a bacterioge...

Full description

Saved in:
Bibliographic Details
Published inJournal of geochemical exploration Vol. 78; pp. 607 - 611
Main Authors Dewaele, S., Muchez, Ph, Boyce, A.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.05.2003
Subjects
Anglo-Brabant Fold belt
Bacteriogenic sulphur
Hydrothermal sulphur
Sulphur isotopes
Anglo-Brabant Fold belt
Hydrothermal sulphur
Bacteriogenic sulphur
Sulphur isotopes
Online AccessGet full text
ISSN0375-6742
1879-1689
DOI10.1016/S0375-6742(03)00020-7

Cover

More Information
Summary:Polysulphide mineralisation in the Lower Palaeozoic of the Anglo-Brabant Fold belt is the subject of a detailed sulphur isotopic investigation to constrain possible sulphur sources. A distinction can be made between sedimentary pyrite, with low δ 34S values and identified as pyrite with a bacteriogenic origin, and pyrite with high δ 34S, formed during hydrothermal circulation along strain zones. Both kinds of pyrites are present in the important orogenic mesozonal polysulphide mineralisation in the Marcq area. The hydrothermal sulphur is presumed to be H 2S released through thermal decomposition of kerogen present in Lower Palaeozoic strata. Pyrite with intermediate δ 34S values occurs in less important strain zones. These values are explained by mixing of hydrothermal sulphur and sulphur with a sedimentary origin.
ISSN:0375-6742
1879-1689
DOI:10.1016/S0375-6742(03)00020-7