摘要
根据近年来金刚石矿床研究所取得的重要成果,讨论了有关金刚石成矿的构造背景,认为我国金伯利岩型金刚石原生矿床,主要产于太古代克拉通内部的构造薄弱地带,受克拉通上与基底有关的隐伏深断裂或深断裂带两侧的次一级断裂控制,反映基底断裂的沉积盖层中的破碎带,往往是大岩筒侵位的有利构造部位。钾镁煌斑岩型金刚石原生矿床主要产于太古代克拉通边缘的元古代活动带和早元古代地台。金刚石砂矿主要分布在华北与扬子地台区,有两处典型的成矿区,郯庐断裂区和沅水流域区,砂矿物源与金伯利岩、钾镁煌斑岩、超基性岩关系密切。
According to the recent research of diamond deposit in the latest important results achieved, discuss the tectonic setting of the diamond ore that China＇s primary kimberlite diamond deposit, mainly in the Archean-craton weak internal structure of area subject to craton with the hidden base deep fault zone of deep faults or fault control on both sides of the second level, reflecting the fractured basement in the fracture zone of sedimentary cover, often a big rock drum emplacement favorable structural positions. Lamproite diamond deposit mainly in the primary Archean-craton edge of the Proterozoic mobile belt and the Early Proterozoic platform. Diamond placer mainly in North China and Yangtze platform area, there are two typical mine area, the Tan-lu fracture area and the Yuan river watershed. The source of diamond placer is closely associated with kimberlite, lamproite and ultrabasic rocks.
出处
《中国非金属矿工业导刊》
2015年第4期42-45,59,共5页
China Non-Metallic Minerals industry
