摘要
大柴旦镇绿梁山地区大地构造位于欧龙布鲁克陆块的俄博山克拉通边缘盆地,成矿区带划属东昆仑成矿省的赛什腾山—阿尔茨托山加里东期、印支期铅、锌、金、钨、锡(铜、钴、稀土)成矿带。本区地层主要为古元古界达肯大板岩群和滩间山群,其中达肯大板岩群为一套古老的变质岩,其Au元素背景含量高,在青海省柴达木盆地北缘地区的该套地层中已发现大量的矿床及矿点。本区的金矿化亦产于该套地层中,且本区及周围侵入岩较发育,通过研究认为本区金矿化为达肯达板岩层中碳质的吸附,促成了金的富集,且通过后期热液及接触交代作用,有益元素活化、迁移后形成金矿(化)。
The tectonic of Lvliangshan area is located in the Eboshan craton margin basin of Oulongbuluke land mass,it belongs to lead,zinc,gold,tungsten,tin（copper,cobalt,rara earth）metallogenic belt of Caledonian and In-dosinian Saishitengshan-Aercituoshan of East Kunlun metallogenic province.The strata of this area is mainly Dak-enda slate and Tanjianshan Group of Proterozoic,Dakenda slate Group is a set of ancient metamorphic rock,with highly gold background content,a large number of deposits and spots have been found in this strata of northern margin of Qaidam Basin.The area gold produced in this strata,intrusive rocks are more developed,through research,we think the gold is adsorbed by carbon of Dakenda slate,it lead to gold enrichment,and by Late hyadrothermal and contact metasomatism,benefical element activation,migration and form gold.
出处
《黄金科学技术》
2010年第4期54-57,共4页
Gold Science and Technology
关键词
地质特征
成矿条件
金矿(化)
绿梁山地区
青海省
Geological characteristics
Mineralization condition
Gold deposit
Lvliangshan area
Qinghai Province
