地质学报2026，Vol.100Issue(6)：1975-1987,13.DOI:10.19762/j.cnki.dizhixuebao.2025237
山东郯城金刚石砂矿区中生代以来构造环境演变对原生金刚石找矿的启示
The enlightenment of tectonic environment evolution since the Mesozoic Era on primary diamond prospecting in the Tancheng diamond placer area,Shandong Province
摘要
Abstract
By integrating existing geological data,field surveys,and the established tectonic framework of the Yi-Shu fault zone,this study elucidates the Mesozoic-Cenozoic tectono-environmental evolution of the study area.It analyzes the formation,distribution,and interrelationships of the principal diamond-bearing units—the Quaternary Xiaopuling,Yuquan,and Heituhu formations—and discusses the metallogenic geological conditions for primary diamond deposits from the pre-Mesozoic to the Cenozoic in northern Tancheng.Although located within the Tancheng depression of the central-southern Yi-Shu fault zone,the concealed strata show strong consistency with the pre-Mesozoic sedimentary sequences of the western Shandong region.The study area shares a similar tectonic setting and metallogenic conditions with the primary diamond-producing area in Mengyin,Shandong.Since the Mesozoic,driven by tectonic drivers such as the collision between the Yangtze and North China blocks,subduction of the Pacific Plate,and the subsequent destruction of the North China Craton,the area has experienced intense lithospheric thinning and magmatic activity.The associated magmatic rocks exhibit a well-defined mantle-derived evolutionary suite.The spatial distribution of placer deposits and the characteristics of diamond indicator minerals suggest the presence of proximal primary sources.It is recommended that future exploration follow the working rationale of"tracing material sources,evaluating structural controls,and identifying lithological targets",focusing on the Neoarchean uplift in the Dashao-Changlin-Fangzhuang area,the NE-trending major fault zones in Linghongbu-Xiaotang,and the multi-phase magmatic complexes in Chenbu-Jiangzhuang.关键词
金刚石/沂沭断裂带/构造环境演变/找矿启示/山东郯城Key words
diamond/Yi-Shu fault zone/tectonic evolution/prospecting implications/Tancheng,Shandong引用本文复制引用
王玉峰,徐衍明,周虹,孙永胜,朱成河,赵红娟,胡为栋,吕青,刘晨,肖丙建,杜伟..山东郯城金刚石砂矿区中生代以来构造环境演变对原生金刚石找矿的启示[J].地质学报,2026,100(6):1975-1987,13.基金项目
本文为山东省地矿局矿产勘查项目(编号KC202506)、山东省第七地质矿产勘查院院控科技创新项目(编号QDKY202301)和山东省地矿局金刚石成矿机理与探测重点实验室和院士工作站联合资助的成果. （编号KC202506）
