The start of the Phanerozoic at the northern edge of the East Sahara Craton (Libya): stratigraphy, facies, and process-correlation along the W-Gondwanan shelf

这一设想的目的是为国际上对西贡德瓦南边缘的地质过程和寒武纪单元对比以及对最令人兴奋和特殊的地质时间片--新元古代至早古生代过渡时期--的认识作出重大贡献。人们特别感兴趣的是寒武纪仍然鲜为人知的陆海相互作用和过渡，特别是关于泛非造山运动(包括古生物学、地层学、相学、古生态学和古地理)之后的沉积和生物系统的内部结构和结构，以及它们与更大规模因素(如演化水平、沉积和构造格架、气候条件等)的关系。Al Qarqaf拱门(利比亚，Hasawnah FM。)是最适合进行这类调查的地区之一，由于其良好的露头条件和非常具有前瞻性的前期工作而被选中。根据申请者的丰富经验和预定的野外和实验室工作，调查的重点将是冈德瓦南西部边缘的沉积、相和古生态结构、遗迹化石和生物化石的古生物学、锆石测年和物源分析、沉积历史和控制过程的重建以及地层和古地理对比。来自预期数据的结论将有助于理解新元古代-寒武纪过渡期间沉积和生物过程和环境的演化及其相互作用的根本变化。

The intension of the supposed project is to contribute significantly to the international effort for correlation of geological processes and Cambrian units along the W-Gondwanan margin, and to the understanding of one of the most exciting and particular geological time-slices, the Neoproterozoic to early Palaeozoic transitional interval. Very special interest is on the still poorly known land-seainteractions and transitions in the Cambrian especially regarding the internal architecture and structure of sedimentary and biotic systems immediately after the Pan-African Orogeny (what includes the fields of palaeontology, stratigraphy, facies, palaeoecology, and palaeogeography) and their relation to larger-scale factors (as evolutionary levels, depositional and tectonic frame, climate conditions etc.). The Al Qarqaf Arch (Libya, Hasawnah Fm.) represents one of the most suitable areas for such investigation and is chosen due to their excellent outcrop conditions and very prospective preliminary work. Based on the large experience of the applicant and of the scheduled field and laboratory work, the investigation will be focused on the sedimentary, facies and palaeoecological architecture, on palaeontology of trace fossils and biomats, on zircon dating and provenance analysis, as well as on reconstruction of the depositional history and controlling processes, and on stratigraphic and palaeogeographic correlation along the western Gondwanan margin. Conclusions from the expected data will contribute to the understanding of the fundamental change in the evolution of sedimentary and biotic processes and environments and their interactions during the Neoproterozoic-Cambrian transition interval.