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The far-field interplay between peripheral Cenerian Orogeny and inner north Gondwanan hinterland: Cambro-Ordovician siliciclastic veneer and pre-Hirnantian unconformities (Sahara, central Libya)
Earth-Science Reviews ( IF 10.8 ) Pub Date : 2024-10-05 , DOI: 10.1016/j.earscirev.2024.104952
Darko Spahić, Fabrizio Cocco, Pavle Tančić

Intra-Ordovician geodynamics along the northern Gondwana margin, defined in most parts of exotic southern peri-Gondwanan Europe, had a far-field effect on the subsiding Gondwanan interior. The outboard peripheral Cenerian Orogeny influenced the ongoing subsidence and deposition of monotonous clastic Cambrian – Lower Ordovician mega-sequence unconformably overlying North African basements. A combination of literature review and field mapping provides first-order constraints between the truncated Cambro-Ordovician successions of central Libya and peri-Gondwanan intra-Ordovician deformation recorded in south-European and Alpine-Carpathian-Balkan basements (unconformity markers). The data synthesis further permits a genetic connection between the detached exotic Ordovician northeastern Gondwanan flank (south Europe/Alps-Carpathian-Balkans) and its subsiding Ordovician intra-cratonic hinterland. By coupling the complex stratigraphic, detrital zircon, and ironstone datasets as unconformity markers, link between south-central European and North African Ordovician imprints is provided.

中文翻译:


外围 Cenerian 造山运动和内北冈瓦纳腹地之间的远场相互作用:Cambro-Ordovician 硅碎屑单板和前 Hirnantian 不整合面(撒哈拉沙漠,利比亚中部)



沿冈瓦纳北部边缘的奥陶纪内部地球动力学,在异国情调的南冈瓦纳南部大部分地区都有定义,对下沉的冈瓦纳内部产生了远场效应。舷外外围的 Cenerian 造山运动影响了单调碎屑寒武纪 - 下奥陶纪巨型层序的持续沉降和沉积,不整合地覆盖在北非基底之上。文献综述和实地绘图相结合,提供了利比亚中部截断的寒武纪-奥陶纪演替与南欧和阿尔卑斯-喀尔巴阡-巴尔干基底(不整合标记)中记录的冈瓦纳周边奥陶纪内部变形之间的一阶约束。数据综合进一步允许分离的外来奥陶纪冈瓦南东北侧翼(南欧/阿尔卑斯山-喀尔巴阡-巴尔干半岛)与其下沉的奥陶纪克拉通内腹地之间存在遗传联系。通过将复杂的地层、碎屑锆石和铁矿石数据集耦合为不整合标记,提供了中南欧和北非奥陶纪印记之间的联系。
更新日期:2024-10-05
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