Sedimentological characterization and provenance analysis of the pre-collisional Betic & Rif turbidite systems

碰撞前贝蒂克的沉积学特征和物源分析

• 批准号: 408795953
• 负责人: Professor Dr. Tom McCann
• 金额: --
• 依托单位: Abteilung Geologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2023-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/408795953?language=en
• 关键词: Sedimentological; characterization; provenance; analysis; pre

The Betic-Rif orogenic system is the westernmost segment of the Western Mediterranean Alpine Chains orogenic belt. The geological evolution of the region resulted from the convergence of the S Iberian and N African palaeomargins leading to crustal deformation, and the westward movement of the Alborán Domain. These two processes resulted in the uplift and thrusting of deep-marine successions, which had been deposited in the Maghrebian Basin, onto the Iberian and African margins. These sediments, cropping out in the Campo de Gibraltar region of SW Spain, can also be traced eastwards as far as the Dinarides. The Betic-Rif system, therefore, is a key area for our understanding of the geodynamic processes which took place during the development of the Maghrebian Basin, as well as the western Mediterranean.The Campo de Gibraltar region contains a variety of lithological units, with three main stratigraphic units recognized, namely, Algeciras, Aljibe and Bolonia units. These have stratigraphic equivalents on the Moroccan side of the Mediterranean. Petrological and provenance information from the various sandstone bodies is lacking and the first aim is to rectify this using a variety of petrological, geochemical and isotopic analyses. Secondly, the sedimentary successions within the Campo de Gibraltar, which are of fundamental importance to our understanding of the evolution of the western part of the Maghrebian Basin, are poorly documented. High-resolution investigation of these successions will provide us with the tools to better understand the causes and consequences of the regional and local geodynamic events in this area.

贝蒂奇-里夫造山系是西地中海阿尔卑斯山脉造山带的最西端。该地区的地质演化是由于南伊比利亚和北非古陆缘的汇聚导致地壳变形，以及阿尔沃兰域的向西移。这两个过程导致马格里布盆地沉积的深海地层隆起和逆冲，进入伊比利亚和非洲边缘。这些沉积物出现在西班牙西南部的坎波德直布罗陀地区，也可以向东追溯到迪纳里德斯。因此，贝蒂奇-里夫系统是我们了解马格里布盆地以及西地中海发展过程中发生的地球动力学过程的一个关键地区，坎波德直布罗陀地区有各种岩性单位，有三个主要的地层单位，即阿尔赫西拉斯、阿尔吉贝和博洛尼亚单位。在地中海的摩洛哥一侧，它们的地层相当。缺乏各种砂岩体的岩石学和物源信息，首要目标是利用各种岩石学、地球化学和同位素分析来纠正这一点。第二，直布罗陀坎波内的沉积序列对我们了解马格里布盆地西部的演变具有根本重要性，但却缺乏文献记载。高分辨率的调查，这些继承将为我们提供的工具，以更好地了解该地区的区域和当地的地球动力学事件的原因和后果。