Palaeoenvironmental control on primary fluids characteristics of lacustrine source rocks in the Autun Permian Basin (France)
| Autor: | Sylvain Garel, François Baudin, Françoise Behar, Johann Schnyder |
|---|---|
| Přispěvatelé: | Institut des Sciences de la Terre de Paris (iSTeP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Total E&P, TOTAL S.A., TOTAL FINA ELF, Evolution et Modélisation des Bassins Sédimentaires (EMBS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
lacustrine environment
010504 meteorology & atmospheric sciences Geochemistry Botryococcus [SDU.STU]Sciences of the Universe [physics]/Earth Sciences organic geochemistry boghead 010502 geochemistry & geophysics 01 natural sciences Paleontology chemistry.chemical_compound Water column Algae Organic geochemistry Kerogen Type I kerogen 0105 earth and related environmental sciences biology lcsh:QE1-996.5 Geology oil-shale biology.organism_classification Anoxic waters Palynofacies lcsh:Geology Source rock chemistry primary fluids |
| Zdroj: | BSGF-Earth Sciences Bulletin, Vol 188, Iss 5, p 29 (2017) Bulletin de la Société Géologique de France Bulletin de la Société Géologique de France, 2017, 188 (5), pp.29. ⟨10.1051/bsgf/2017187⟩ |
| ISSN: | 1777-5817 0037-9409 |
| Popis: | International audience; The Autunian (Late Gzhelian-Sakmarian, ∼295 Ma) of the Autun Basin (Saône-et-Loire, France) is well known for its lacustrine oil-shales and boghead that were exploited during the 19th and 20th centuries. A study of the kerogen geochemistry, palynofacies, hydrocarbon (HC) distribution of pyrolysates and kinetics on these organic-rich sediments gave indications on the control of lacustrine primary fluid characteristics by palaeoenvironmental settings. Palynofacies results have shown a Botryococcus algae dominance in the boghead, whereas the oil-shales were dominated either by a mixing of terrestrial particles and lacustrine phytoplanktonic/bacterial organic matter (OM), or by a lacustrine OM that suffered biodegradation within the water column. During the Autunian, an increasing trend of degraded lacustrine OM concentration is observed in the successive oil-shales. Geochemical and kinetics analyses showed that, except for the boghead, hydrogen index values were |
| Databáze: | OpenAIRE |
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