greenstone造句
The redelimited Jiapigou gold - concentrated area is composed of Archean granitoid -
greenstone belts and high grade metamorphism areas.
重新界定的夹皮沟金矿集中区包括了太古宙花岗 - 绿岩带和高级变质区两个组成部分.
Evidence from isotopic dating suggests that the
greenstone belts vary considerably in age.
来自同位素年龄鉴定的证据指出,绿岩带在年龄上彼此变化相当大.
Both the well - preserved
greenstone belt and TTG - reworked granite -
greenstone belt are favorable for gold deposit formation.
无论是保存相对完好的绿岩带还是被 TTG 改造后的花岗 — 绿岩带,均有利于金矿形成.
Granite
greenstone - hosted , meta - clastics - hosted , volcanics - subvolcanics hosted and sedimentary rock - hosted micro - disseminated gold deposits are of industrial value.
具有工业价值的金矿类型以花岗岩 - 绿岩型、变碎屑岩型 、 微细 浸染型 、 火山-次火山岩型为主.