Large-scale magnetic susceptibility (MS) variations in ancient sediments are usually interpreted as related to sea-level and climate changes affecting the erosional regime amount of detrital input. To constrain such environmental during Famennian, we compared MS records representative sections pelagic limestones (1) Avalonian margin Laurussia [Sessacker (SES) Beringhauser Tunnel (BHT), Rhenish ...

Abstract The early Cenomanian crippsi Event comprises a 1–3-m-thick interval characterised by mass occurrences of the inoceramid Gnesioceramus , identified in uppermost Sharpeiceras schlueteri Subzone (lower lower Mantelliceras mantelli Zone), below an interregional sequence boundary (SB Ce 1). At Lüneburg, event is densely packed, very large, disc-like valves G . Taphonomy as well bio- and mic...

Abstract The Kimmeridgian Alcobaça Formation of the Lusitanian Basin forms a mixed carbonate–siliciclastic unit between basinal deposits Abadia Formation, and fluvial–terrestrial strata Lourinhã Formation. This study presents >2.5 km detailed logs nine outcrop sections in its type region. Eight these encircle Caldas da Rainha Diapir, which was prominent, emergent, passive salt diapir during ...

Daos le secteur nord-oriental du Maroc, les dép6ts littoraux Miocene Supérieur présentent quatre pirncipaux types de biofacies a bryozoaires, en relation étroite avec la nature lithologique sédiment: conglomérats, sables biodétritiques, mames organo-détritiques et calcaires Corallinacées. Une analyse paléoécologique es...

Abstract Sequence stratigraphy and Electrosequence of the Don-Field Central Swamp depobelt Niger Delta Basin, was carried out using well logs, biostratigraphic core data. The aim this study is to re-characterise revalidate reservoirs within area provide an optimum framework for predicting reservoir character, development quality distribution. Detailed petrophysical evaluation reveals proficient...