Reference : The ‘black marble’ of Denée, a fossil conservation deposit from the Lower Carboniferous ...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/2268/1227
The ‘black marble’ of Denée, a fossil conservation deposit from the Lower Carboniferous (Viséan) of southern Belgium
English
Mottequin, Bernard mailto [Université de Liège - ULg > Département de géologie > Paléontologie animale et humaine >]
2008
Geological Journal
John Wiley & Sons
43
197-208
Yes (verified by ORBi)
International
0072-1050
[en] ‘black marble’ of Denée ; fossil conservation deposit ; Viséan ; Moliniacian ; Belgium
[fr] 'marbre noir' de Denée ; Formation de la Molignée ; Viséen
[en] The palaeoenvironment of the ‘black marble’ of Denée [Dinant sedimentation area (DSA), southern Belgium], included in the Molignée Formation of Lower Carboniferous (Viséan) age, is discussed. This fossil conservation deposit (‘fossil Lagerstätte’) yielded a rare but remarkably preserved macrofauna (including fishes, echinoderms and brachiopods). It developed in a confined intra-platform basin progressively filled by distal calcareous turbidites originating from the southward prograding shelf to the north. This basin was bordered to the south by a discontinuous barrier of Waulsortian mud mounds built against a major synsedimentary fault separating the DSA from the southern Avesnois sedimentation area (ASA). The alternations of laminated (‘black marble’ facies) and bioturbated (‘thick-bedded’ facies) lithofacies occurring within the Molignée Formation imply that the palaeoenvironment recorded several anoxic to dysoxic periods alternating with more oxygenated ones due to sea-level fluctuations of low magnitude and was strongly influenced by the basin architecture inherited from the late Tournaisian.
http://hdl.handle.net/2268/1227

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