Objective: Recent works carried out on Andra’s request (French National Agency for Radioactive Waste Management) allowed a deep geological reappraisal of the Jurassic of the Eastern Paris Basin, and brought new insights about the Jurassic petroleum system. A geological and petrophysical static model was performed over a large area centered on the main zone of interest, along an extended stratigraphic interval (Bajocian to Kimmeridgian).
The aim of this field trip is to follow, (1) through the entire stratigraphic interval or (2) focusing either on the Middle or Late Jurassic, the evolution of the various depositional environments, sedimentary facies, and geometries in a constrained sequence-stratigraphic framework, which represents the skeleton of the geological model. This approach involves several outcrop studies and calls for a constant comparison with related subsurface data (cores, logs, seismic). The evolution of carbonate platforms morphology and associated stratigraphic architectures are interpreted to define the sedimentary-inherited heterogeneity in the model.