摩洛哥南部ssmara - layoune盆地白垩纪海相对古生代沉积的覆盖。与邻近地区比较

IF 2 4区 地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY
Mohamed Abioui , Serge Ferry , Danièle Grosheny , Nourrissaid Içame , Emmanuel Robert , Mohammed Benssaou
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引用次数: 5

摘要

白垩纪海侵经历了从阿尔比统到Turonian(以菊石为年代)的连续阶段。叠置楔开始于海岸海侵-退短期层序上的块状,可能是河流砂岩,与在北部Tarfaya亚盆地的Puerto cansanado井中发现的非常厚的下白垩纪大陆序列相关。第二步,可能是诺曼尼亚时代,到达古生代的基底。第三个更明显的阶段发生在最早的Turonian,板状层状灰岩上覆盖着含黄铁矿化菊石的泥灰岩。在早吐鲁番海侵高峰时期,大西洋和特提斯边缘之间、反阿特拉斯和瑞吉巴特地盾之间可能建立了海洋联系。从大尺度对比综合阿特拉斯裂谷西南肩发生的情况来看,南摩洛哥大西洋边缘可能在塞诺曼- turonian边界附近经历了短暂的构造隆升。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Cretaceous marine onlap on Palaeozoic deposits (Smara–Lâayoune Basin, South Morocco). Comparison with neighbouring regions

The Cretaceous marine transgression proceeded through successive steps from the Albian to the Turonian (dated with ammonites). The onlapping wedge begins with coastal transgressive–regressive short-term sequences on massive, probably fluvial sandstones to be correlated with the very thick continental Lower Cretaceous succession found in the Puerto Cansado well in the Tarfaya sub-basin to the north. A second step, of probable Cenomanian age, reached the Palaeozoic basement. A third, more pronounced step occurred during the earliest Turonian with platy laminated limestone overlain by marlstone bearing pyritized ammonites. At early Turonian peak transgression, a marine connection was possibly established between the Atlantic and the Tethyan margins, between the Anti-Atlas and the Reguibat Shield. From large-scale correlation integrating what occurred along the southwestern shoulder of the Atlas rift, the South Moroccan Atlantic margin may have undergone a short-lived tectonic uplift around the Cenomanian–Turonian boundary.

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来源期刊
Comptes Rendus Geoscience
Comptes Rendus Geoscience 地学-地球科学综合
CiteScore
2.80
自引率
14.30%
发文量
68
审稿时长
5.9 weeks
期刊介绍: Created in 1835 by physicist François Arago, then Permanent Secretary, the journal Comptes Rendus de l''Académie des sciences allows researchers to quickly make their work known to the international scientific community. It is divided into seven titles covering the range of scientific research fields: Mathematics, Mechanics, Chemistry, Biology, Geoscience, Physics and Palevol. Each series is led by an editor-in-chief assisted by an editorial committee. Submitted articles are reviewed by two scientists with recognized competence in the field concerned. They can be notes, announcing significant new results, as well as review articles, allowing for a fine-tuning, or even proceedings of symposia and other thematic issues, under the direction of invited editors, French or foreign.
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