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Ordovician carbonate mud mounds of the Baltoscandian Basin in time and space: a geophysical approach
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Geophysics.ORCID iD: 0000-0001-5082-8365
Key Laboratory of Economic Stratigraphy and Palaeogeography, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China; GeoZentrum Nordbayern, Lithosphere Dynamics, Friedrich-Alexander University of Erlangen-Nürnberg, Schloßgarten 5, D-91054 Erlangen, Germany; Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Praha 6 - Suchdol, Czech Republic.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Geophysics.
Geological Survey of Sweden (SGU), Kiliansgatan 10, 223 50 Lund, Sweden; Department of Geology, Lund University, Sölvegatan 12, SE-223 62 Lund, Sweden.
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2019 (English)In: Palaeogeography, Palaeoclimatology, Palaeoecology, ISSN 0031-0182, E-ISSN 1872-616X, Vol. 535, article id 109345Article in journal (Refereed) Published
Abstract [en]

Carbonate mud mounds developed within the Baltoscandian Basin, an epicratonic basin on the Baltica palaeocontinent, during the Ordovician. In the Upper Ordovician succession of the Baltoscandian Basin, a large number of mud mounds are present at three stratigraphic levels namely, the Kullsbergs mounds (late Sandbian-early Katian), Nabala and Rakvere mounds (middle Katian), and the Boda mounds (late Katian). These formed in a subtropical-tropical carbonate platform environment, covered by a shallow epicontinental sea. The mud mounds at these stratigraphic levels beneath and around Gotland have been characterized using a comprehensive seismic and well dataset acquired during a period of hydrocarbon exploration and exploitation which began more than 30 years ago. Interpretation of the largely unpublished seismic data in this study provides details on the distribution of mound complexes in the basin and constraints on the geometry of the mounds. Detailed structure contour maps of the top and the base of the Ordovician succession beneath Gotland based on the seismic interpretation are presented. The results give a comprehensive characterization of carbonate mud mound generation on Gotland which may help in understanding the distribution patterns of similar mound complexes in other parts of the Ordovician world formed in similar environments.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 535, article id 109345
Keywords [en]
Baltica, Carbonate mud mounds, Gotland, OPAB dataset, Seismic interpretation, Sweden
National Category
Earth and Related Environmental Sciences Geophysics
Identifiers
URN: urn:nbn:se:uu:diva-393044DOI: 10.1016/j.palaeo.2019.109345ISI: 000504786400002OAI: oai:DiVA.org:uu-393044DiVA, id: diva2:1352061
Funder
German Research Foundation (DFG), LE 867/8-1German Research Foundation (DFG), LE 867/8-2Swedish Research CouncilAvailable from: 2019-09-17 Created: 2019-09-17 Last updated: 2020-01-28Bibliographically approved

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Levendal, Tegan CorinneSopher, DanielJuhlin, Christopher

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