6533b82efe1ef96bd129313e
RESEARCH PRODUCT
Séries condensées et indice de préservation d'unité biostratigraphique: exemple de l'ennoiement de la plate-forme nord-bourguignonne (France) au Callovo-Oxfordien
Pierre-yves CollinJean-paul LoreauJacques ThierryPhilippe CourvilleDidier Marchandsubject
Sedimentary depositional environmentPaleontologyClastic rockPhanerozoicMarlCarbonate rockOcean EngineeringSedimentary rockMesozoicStructural basinEcology Evolution Behavior and SystematicsGeologydescription
Abstract Several depositional environments associated with Callovian-Oxfordian condensed series of the southeast of the Paris Basin are defined. As sedimentation rates were very low, variations in palaeodepth, which were synchronous at regional scale, were taken to directly reflect fluctuations in accommodation potential. Within a major trend toward increased accommodation potential, five sharp upturns and one sharp downturn are detected. A biostratigraphic unit preservation index is denned to quantify and discuss the low preservation of sediments in these condensed series. This index is seen to vary with accommodation potential.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-01-01 | Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science |