Sedimentary dynamics and extensional structuring related to early Cretaceous rifting of Neocomian and Barremian deposits of the interior basin of Gabon |
| |
| Institution: | 1. Université des Sciences et Techniques de Masuku, Département de Géologie, BP 943, Franceville, Gabon;2. Université de Bourgogne, Centre des Sciences de la Terre, et UMR CNRS 5561 Biogéosciences, 6 bd Gabriel, 21000 Dijon, France;1. University of Oxford, Department of Politics and International Relations, Manor Road Building, Manor Road, Oxford OX1 3UQ, United Kingdom;2. University of Oxford, All Souls College, High Street, Oxford OX1 4AL, United Kingdom;1. Commissariat a l''énergie atomique et aux énergies alternatives, Centre de Saclay, IRFU, 91191 Gif-sur-Yvette, France;2. Astroparticules et Cosmologie APC, 10 rue Alice Domon et Léonie Duquet, 75205 Paris cedex 13, France;1. Centre Hospitalier Régional Universitaire (CHRU) de Montpellier, Département de Bactériologie-Virologie, Montpellier, France;2. Université Montpellier 1, Montpellier, France;3. INSERM U 1058, Infection by HIV and by Agents with Mucocutaneous Tropism: from Pathogenesis to Prevention, Montpellier, France;1. Sorbonne University, UPMC Université Paris 06 CR7, CIMI, Team E13 (bacteriology), F-75013, Paris, France;2. INSERM U1135, CIMI, Team E13, Paris, France;1. Sorbonne University, UPMC Université Paris 06 CR7, CIMI, Team E13 (bacteriology), F-75013, Paris, France;2. INSERM U1135, CIMI, Team E13, Paris, France;3. AP-HP, Microbiology, St-Antoine Hospital, Paris, France;1. Institut National de la Santé et de la Recherche Médicale, U1047, Université de Montpellier 1, Nîmes, France;2. Department of Microbiology, CHU Carémeau, Nîmes, France;1. Centre de Recherche de la Tour du Valat, Arles, France;2. Maladies infectieuses et vecteurs: écologie, génétique, évolution et contrôle, UMR (IRD/CNRS/UM) 5290, Montpellier, France;1. Université Montpellier 1, Montpellier, France;2. Department of Biopathology, CHRU Montpellier, France;3. Department of Clinical Oncoproteomics, Montpellier Cancer Institute, Montpellier, France;1. Centre Hospitalier Régional Universitaire (CHRU) de Montpellier, Département de Bactériologie-Virologie, Montpellier, France;2. Université Montpellier 1, Montpellier, France;3. INSERM U 1058, Infection by HIV and by Agents with Mucocutaneous Tropism: from Pathogenesis to Prevention, Montpellier, France;4. Maladies infectieuses et vecteurs: écologie, génétique, évolution et contrôle, UMR (IRD/CNRS/UM) 5290, Montpellier, France;1. Centre Hospitalier Régional Universitaire (CHRU) de Montpellier, Département de Bactériologie-Virologie, Montpellier, France;1. Centre Hospitalier Régional Universitaire (CHRU) de Montpellier, Département de Bactériologie-Virologie, Montpellier, France;2. Université Montpellier 1, Montpellier, France;3. INSERM U 1058, Infection by HIV and by Agents with Mucocutaneous Tropism: from Pathogenesis to Prevention, Montpellier, France;1. Universidade Federal de Pernambuco (UFPE), Recife, PE, Brazil;2. Service in Otorhinolaryngology, Hospital Agamenom Magalhães, Recife, PE, Brazil;3. Hospital Agamenon Magalhães, Recife, PE, Brazil;4. Universidade de São Paulo (USP), São Paulo, SP, Brazil;5. Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil;6. Hospital das Clínicas, Universidade Federal de Pernambuco (UFPE), Recife, PE, Brazil |
| |
| Abstract: | Recent field and subsurface data about the early Neocomian N’dombo series and the Neocomian to mid-Barremian Schistes series of the interior basin of Gabon further our understanding of the initial stages of early Cretaceous N40–60°E extensional rifting. The syn-rift series comprise fluvial–lacustrine claystones–sandstones, rare conglomerates, and carbonates. The syn-rift fill begins with braided-stream feldspathic sandstones. These are overlain first by fluvial–lacustrine deposits and then by predominantly lacustrine–palustrine claystones, which are potential petroleum source rocks. The claystones are eroded in part and are capped by the pre-Aptian angular unconformity marking the end of Cretaceous rifting in the interior basin. This change in syn-rift facies and depositional environments reflects a rise in base level in response to accelerated subsidence after the initial stage of rifting. The syn-rift deposits form two fining-upward sequences several 100–1000 m thick. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
