Integrated petrographic and geochemical record of hydrocarbon seepage on the Vøring Plateau

From: Journal of the Geological Society | Date: September 1, 2005| Author: Akhmanov, G G; Aloisi, G; Et al; Parnell, J; Mazzini, A | Copyright information

Abstract:

Authigenic carbonate crusts, nodules and chemoherms were sampled from pockmarks and mud diapirs on the southern part of the Vøring Plateau during the TTR-8 and TTR-10 marine expeditions. A petrographic and geochemical study was carried out to investigate their possible relationship with the seepage of hydrocarbon fluids. All authigenic carbonates are depleted in ^sup 13^C (-31.6[per thousand] < δ^sup 13^C < -52[per thousand]) indicating that methane is the primary...

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