Article (Scientific journals)
Diagenetic and paleogeographic significance of clay and other sedimentary components in the middle Devonian limestones of Western Ardennes, France
Chamley, H.; Proust, J. N.; Mansy, J. L. et al.
1997In Palaeogeography, Palaeoclimatology, Palaeoecology, 129, p. 369-385
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Keywords :
Givetian; Western Europe; carbonates; clay; diagenesis; palaeogeography
Abstract :
[en] Givetian deposits accumulated in a more than 300-m-thick succession on a carbonate platform developed on the passive margin of the so-called Rheic ocean. These rocks crop out in the Ardenne massif at Glageon in a structural context marked by small fault-controlled basins subjected to moderate overburden, tectonic and metamorphic constraints. Data on the clay mineral distribution, associated with detailed information on limestone facies/microfacies, as well as data on the depositional profile and sequence stratigraphic evolution of these rocks indicate strong carbonate diagenesis and moderate clay diagenesis, the latter being favoured by the early occurrence of the former, which prevented further fluid-rock interaction. The clay assemblage distribution, which roughly parallels the palaeomorphologic and palaeobathymetric shape of the Givetian continental margin, is organized in five successive zones indicating large-scale sequence stratigraphic evolution and the control of regional sea-level fluctuations. The clay and other sedimentary components provide additional information on the warm and variably humid climate, northern, relative to southern, terrigenous sources, the open sea relative to restricted depositional environments, the temporary tectonic rejuvenation of the continental hinterland and the chemical conditions allowing early diagenetic modifications.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Chamley, H.
Proust, J. N.
Mansy, J. L.
Boulvain, Frédéric  ;  Université de Liège - ULiège > Département de géologie > Pétrologie sédimentaire
Language :
English
Title :
Diagenetic and paleogeographic significance of clay and other sedimentary components in the middle Devonian limestones of Western Ardennes, France
Publication date :
1997
Journal title :
Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN :
0031-0182
eISSN :
1872-616X
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
129
Pages :
369-385
Peer reviewed :
Peer Reviewed verified by ORBi
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