Tide- and wave-influenced depositional environments in the Psammites du Condroz (Upper Famennian) in Belgium
Thorez, J.; Goemaere, E.; Dreesen, R. (1988). Tide- and wave-influenced depositional environments in the Psammites du Condroz (Upper Famennian) in Belgium, in: de Boer, P.L. et al. (Ed.) Tide-influenced sedimentary environments and facies. Extended versions of papers presented at the Symposium on Classic Tidal Deposits, held August 1985 in Utrecht, Netherlands. pp. 389-415
In: de Boer, P.L. et al. (Ed.) (1988). Tide-influenced sedimentary environments and facies. Extended versions of papers presented at the Symposium on Classic Tidal Deposits, held August 1985 in Utrecht, Netherlands. D. Reidel Publishing: Dordrecht. ISBN 90-277-2622-1. ix, 530 pp., meer
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| Auteurs | | Top |
- Thorez, J.
- Goemaere, E.
- Dreesen, R.
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| Abstract |
The Psammites du Condroz (Upper Famennian, Upper Devonian) in Belgium display a complex interfingering of depositional environments that developed during a rhythmic progradation on the Condroz Platform, south of the London-Brabant Massif. The Lower Famennian Famenne Shales and the Upper Famennian, coarser Psammites du Condroz are sandwiched between two extensive, thick, transgressive carbonate series: the Frasnian below and the Dinantian above. A variety of depositional environments is represented: distal alluvial, alluvio-lagoonal, evaporitic lagoonal, tidal lagoonal, inshore sandy barrier, tidal flats, tempestites, offshore mixed sandy and crinoidal limestone barrier, fluxoturbidites, and outer shelf mud deposits. The regression was controlled by the interplay of paleomorphology of the sedimentary basin, differential subsidence, paleotectonics (block tilting), paleooceanography, and paleoclimate. Tide- and wave-influenced deposits occupied a large area which was limited to the north, in the Dinant Synclinorium, by diachronic sandy barriers (generated by the mutual interference of alluvial discharge, tides and waves), and to the southwest, by an offshore barrier composed of mixed sands and incipient carbonate buildups. The rhythmic pattern of the tide- and wave-influenced deposits is discussed considering the overall paleogeography of the Psammites du Condroz. |
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