|
|||||
|
|
Authigenic carbonates from the eastern Black Sea as an archive for shallow gas hydrate dynamics – Results from the combination of CT imaging with mineralogical and stable isotope analyses |
|
| Authors: | A Bahr T Pape F Abegg G Bohrmann T van Weering MK Ivanov |
| Institution: | 1. Leibniz-Institut für Meereswissenschaften IFM-GEOMAR, FB 1 Ocean Circulation and Climate Dynamics, Wischhofstr. 1-3, D-24148 Kiel, Germany;2. MARUM – Center for Marine Environmental Sciences and Department of Geosciences, University of Bremen, University of Bremen, Klagenfurter Strasse, D-28334 Bremen, Germany;3. Leibniz-Institut für Meereswissenschaften IFM-GEOMAR, TLZ, Wischhofstr. 1-3, D-24148 Kiel, Germany;4. Royal Netherlands Institute for Sea Research, Department of Marine Chemistry and Geology, P.O. Box 59, 1790 AB Den Burg, The Netherlands;5. Vrije Universiteit, Faculty of Earth and Life Sciences, Department of Paleoclimatology and Geomorphology, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands;6. UNESCO MSU Center for Marine Geology and Geophysics, Faculty of Geology, Moscow State University, Vorobjevy Gory, Moscow 119899, Russia |
| Abstract: | Authigenic carbonates associated with cold seeps provide valuable archives of changes in the long-term seepage activity. To investigate the role of shallow-buried hydrates on the seepage strength and fluid composition we analysed methane-derived carbonate precipitates from a high-flux hydrocarbon seepage area (“Batumi seep area”) located on the south-eastern Black Sea slope in ca. 850 m. In a novel approach, we combined computerized X-ray tomography (CT) with mineralogical and isotope geochemical methods to get additional insights into the three-dimensional internal structure of the carbonate build-ups. |
| Keywords: | Methane-derived carbonates Black sea Gas hydrate Computerized X-ray tomography Stable oxygen isotopes Batumi seep area |
| 本文献已被 ScienceDirect 等数据库收录！ | |