摘要
五台-恒山花岗岩-绿岩地体与燕山地体(西侧部分)所分布的金、银多金属矿床,是受太古宙超大陆地壳裂解作用所形成的裂谷型热幔柱,和复合或叠加的中生代幔枝构造控制,均沿EW向及NE向韧性剪切带分布.在幔枝构造的内部是以金(铁多金属)矿床为主,其外围拆离带是以银多金属矿床为主,形成"金三角、银镶边"的特征.它们的成因皆和地幔活动导致的壳幔岩浆侵位有着内在联系.
There are numerous goldsilverpolymetal deposits in WutaiHengshan granitegreenstone terrane and in the region to the western boundary of Yanshan terrane.The emplacement of these deposits was initially constrained by a rifttype hot mantle plume associated with breakdown of the achaean supercontinent, while transformation and overprinting of them was caused by mesozoic mantle branches. These deposits are distributed along EW and NE-trending ductile shear zones. Areas above the mantle branches are dominated by gold(iron and polymetallic)deposits, whereas the surrounding areas are characterized by silver and polymetallic deposits, resulting in a configuration of silver selvage on a gold triangle.These deposits are genetically related to mantle activity and resultant crustal and mantle magmatism.
出处
《桂林工学院学报》
2003年第2期139-148,共10页
Journal of Guilin University of Technology
基金
原冶金工业部地质勘查总局科研项目"晋东北与次火山岩有关金矿床成矿规律的研究"部分成果
关键词
幔枝构造
壳
幔成矿作用
金、银多金属矿床
五台山
山西
mantle-branch structures
crust-mantle metallogeny
gold-silver-polymetal deposits
Wutaishan.