6533b856fe1ef96bd12b24e8
RESEARCH PRODUCT
A sequence analyzed from the basin to the platform : the Middle Oxfordian calcareous succession in southeastern France
Bernard LathuilièreMicheline HanzoDidier MarchandFrançois AtropsChristiane RugetWinfried WernerAbdelkader BouhamdiChristian GaillardLaurent EmmanuelYves BodeurRaymond Enaysubject
Paleontologygeographygeography.geographical_feature_categoryMarlPeriod (geology)SedimentGeologySubsidenceMid-ocean ridgeSequence stratigraphyStructural basinSedimentationGeologydescription
Abstract Middle Oxfordian sedimentation is very homogeneous in southeastern France. It is characterized by a specific alternation of marls and fine-grained limestones (G. transversarium Zone). This work shows that sets of calcareous beds allow accurate stratigraphic correlations in various paleogeographic areas, from the shallow Jura platform to the deep Dauphinois basin. Following a rifting period, this sedimentation illustrates a doming period with decreasing subsidence and water depth. This corresponds to the establishment of a wide marine area more favourable to carbonate sedimentation. Considering sequence stratigraphy, some slight variations occur in the sediment record and lead to interesting comparisons between the platform and the basin. The geochemical evolution, mainly the manganese content, seems to be dependant of the activity of the Ligurian Tethys oceanic ridge. This fact shows that sedimentation in southeastern France could be significantly controlled by tectono-eustasy.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-03-01 | Bulletin de la Société Géologique de France |