A genetic link between synsedimentary ...
Type de document :
Article dans une revue scientifique: Article original
Titre :
A genetic link between synsedimentary tectonics-expelled fluids, microbial sulfate reduction and cone-in-cone structures.
Auteur(s) :
Tribovillard, Nicolas [Auteur correspondant]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Petit, Anélia [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Quijada, Melesio [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Riboulleau, Armelle [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Sansjofre, Pierre [Auteur]
Domaines Océaniques [LDO]
Thomazo, Christophe [Auteur]
Biogéosciences [UMR 6282] [BGS]
Huguet, Arnaud [Auteur]
Milieux Environnementaux, Transferts et Interactions dans les hydrosystèmes et les Sols [METIS]
Birgel, Daniel [Auteur]
Averbuch, Olivier [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]

Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Petit, Anélia [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Quijada, Melesio [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Riboulleau, Armelle [Auteur]

Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Sansjofre, Pierre [Auteur]
Domaines Océaniques [LDO]
Thomazo, Christophe [Auteur]
Biogéosciences [UMR 6282] [BGS]
Huguet, Arnaud [Auteur]
Milieux Environnementaux, Transferts et Interactions dans les hydrosystèmes et les Sols [METIS]
Birgel, Daniel [Auteur]
Averbuch, Olivier [Auteur]

Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Titre de la revue :
Marine and Petroleum Geology
Pagination :
437-450
Éditeur :
Elsevier
Date de publication :
2018-05
ISSN :
0264-8172
Mot(s)-clé(s) en anglais :
Early diagenesis
Carbonate nodules
Boulonnais area
Late jurassic
Hydrocarbon source-rocks
Anaerobic oxidation of methane
Carbonate nodules
Boulonnais area
Late jurassic
Hydrocarbon source-rocks
Anaerobic oxidation of methane
Discipline(s) HAL :
Planète et Univers [physics]/Sciences de la Terre/Stratigraphie
Planète et Univers [physics]/Sciences de la Terre/Géochimie
Planète et Univers [physics]/Sciences de la Terre/Géochimie
Résumé en anglais : [en]
The late Jurassic (Tithonian) marlstones of the Boulonnais area (English Channel, France) contains diagenetic carbonate beds and nodules. Some nodules exhibit cone-in-cone structures on their lower face. We studied such ...
Lire la suite >The late Jurassic (Tithonian) marlstones of the Boulonnais area (English Channel, France) contains diagenetic carbonate beds and nodules. Some nodules exhibit cone-in-cone structures on their lower face. We studied such nodules using various techniques of imaging and chemical (major and trace-elements) and isotopic analyses (Ccarb, Corg, O and S stable isotopes). We interpret the cone-in-cone to be the end product of carbonate-nodule formation during early diagenesis. The diagenetic carbonate precipitation was induced by microbial activity (bacteria and(?) archeae) fueled by upward-migrating fluids. Fluid expulsion was itself triggered by synsedimentary fault movements. Under such circumstances, cone-in-cone structures can form during early diagenesis as the result of bacterially-mediated sulfate reduction, possibly coupled to sulfate-dependent anaerobic oxidation of methane. This genetical scheme may be transposed to many other settings.Lire moins >
Lire la suite >The late Jurassic (Tithonian) marlstones of the Boulonnais area (English Channel, France) contains diagenetic carbonate beds and nodules. Some nodules exhibit cone-in-cone structures on their lower face. We studied such nodules using various techniques of imaging and chemical (major and trace-elements) and isotopic analyses (Ccarb, Corg, O and S stable isotopes). We interpret the cone-in-cone to be the end product of carbonate-nodule formation during early diagenesis. The diagenetic carbonate precipitation was induced by microbial activity (bacteria and(?) archeae) fueled by upward-migrating fluids. Fluid expulsion was itself triggered by synsedimentary fault movements. Under such circumstances, cone-in-cone structures can form during early diagenesis as the result of bacterially-mediated sulfate reduction, possibly coupled to sulfate-dependent anaerobic oxidation of methane. This genetical scheme may be transposed to many other settings.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Commentaire :
14 pages
Source :