阿拉伯地盾地质构造演化与关键地质矿产问题浅析  

Tectonic Evolution and Key Geological Mineral Issues of Arabian Shield

作　　者：查显锋[1,2] 计文化 辜平阳[1] 吕鹏瑞[1] 王国强[1] 陈锐明[1] 康磊[1,2] 李猛[1] 孙吉明[1] 荆德龙[1] 王凯[1] 罗克勇[1] ZHA Xianfeng;JI Wenhua;GU Pingyang;LÜPengrui;WANG Guoqiang;CHEN Ruiming;KANG Lei;LI Meng;SUN Jiming;JING Delong;WANG Kai;LUO Keyong(Center for Orogenic Belt Geology of China Geological Survey,Xi’an Center of China Geological Survey,Xi’an 710119,Shaanxi,China;Department of Geology,Northwest University,Xi’an 710069,Shaanxi,China)

机构地区：[1]中国地质调查局西安地质调查中心,造山带地质研究中心,陕西西安710119 [2]西北大学地质学系,陕西西安710069

出　　处：《西北地质》2023年第5期204-213,共10页Northwestern Geology

基　　金：沙特地质调查局国际合作项目“Detailed Geological Mapping of the Arabian Shield,Kingdom of Saudi Arabia”(RFP#SGS-411-007);中国地质调查局项目(DD20221636);国家自然科学基金项目(92055314);陕西省自然科学基金项目(2023-JC-YB-249)联合资助。

摘　　要：阿拉伯地盾位于阿拉伯板块的西南部,与红海西岸的努比亚地盾共同组成努比亚−阿拉伯地盾,是新元古代东、西冈瓦纳大陆汇聚过程中形成的泛非造山带的重要组成部分。在“沙特阿拉伯地盾精细地质填图”技术标编制过程中,笔者综合分析了该区的地质调查和研究成果,总结了阿拉伯地盾8个次级地体、主要蛇绿岩构造混杂岩带及新元古代沉积盆地的地质特征,并将阿拉伯地盾的地质演化细分为4个构造演化阶段。其中,在新元古代洋−陆转化过程中阿拉伯地盾形成了一系列重要的矿产资源。在此基础上,系统梳理了区内地层、构造、岩浆作用及与成矿相关的地质问题,提出了未来精细地质填图过程中的工作建议。The Arabian Shield,located in the southwestern Arabian Plate,constitutes the Nubia–Arabian Shield with the Nubia to the west of the Red Sea,and is an important part of the Pan–Africa Orogeny that formed during the convergence of eastern and western Gondwana in Neoproterozoic.During compiling the technical bid of“Detailed Geological Mapping of the Arabian Shield,Kingdom of Saudi Arabia”,both progress on geological survey and researches of the Arabian Shield has been comprehensively analyzed.The geological structure of the Arabian Shield is characterized by eight terrenes and ophiolitic mélange zones or shearing zones between them,and is overlain by Neoproterozoic sedimentary basins.Based on these analyses,the tectonic evolution of the Arabian Shield can be classified into four tectonic stages,and a series of metal deposits have been formed during the ocean–continent tectonic transformational process in Neoproterozoic.Moreover,the geological problems related to strata,magmatism,tectonic evolution,and mineralization of the Arabian Shield have been sorted out, as well as suggestions have been put forward for the detailed geological mapping in the future.

关 键 词：精细地质填图 阿拉伯地盾 泛非造山带 构造演化 

分 类 号：P541[天文地球—构造地质学] P544[天文地球—地质学]