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ORGANIC CARBON-SULPHUR COUPLING IN THE EAGLE FORD FORMATIONGold Open Access

Authors: M. Mertesdorf, C. März, U. Mann, S.C. Ruppel, O. Esegbue and T. Wagner
Event name: 29th International Meeting on Organic Geochemistry
Session: Posters - Unconventionals
Publication date: 04 September 2019
DOI: 10.3997/2214-4609.201903005
Language: English
Info: Extended abstract, PDF ( 137.7Kb )

Summary:
The preservation and burial of organic matter during deposition of organic rich rocks is governed by a complex combination of paleo-environmental factors, feedbacks, and dynamics with other constituents. The coupling between organic carbon and sulphur is one aspect requiring further investigation. Organic and inorganic geochemical analyses were carried out on sections of two cores from the Cretaceous Eagle Ford Formation. These samples have bulk and molecular compositions reflecting differing redox and paleo-oceanographic conditions, and variable inputs of organic and terrigenous matter. Biomarkers provide key information on paleo-environment, organic matter source, quality, and preservation, and organic matter sulphurisation. Several sections were sampled at high resolution to investigate the organic carbon-sulphur dynamics, and paleo-environmental influences on this coupling, on orbital timescales during their deposition.

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