erathem

基本解释

Shagou deposit mainly lies in the metamorphic rock of Taihua Group,Archaeozoic erathem.
本矿床主要的赋矿地层为新太古界太华群高级变质岩。
The Yangjin'gou scheelite deposit occurs in Wudaogou group of lower palaeozoic Erathem.
杨金沟白钨矿床产于下古生界五道沟群中。
Jiaodong Group ofthe Archean Erathem was the source bed of the gold deposits of the area.
上太古界胶东群是本区金矿床主要矿源层；岩浆活动是成矿物质的载体；
The oil resource which formed in Mesozoic and Cenozozic erathem accounts for about 87 percent.
石油资源主要分布于中、新生界，约占87%25，天然气资源主要分布于古生界，约占51%25；
Gas reservoirs of upper palaeozoic erathem contains different gas layers,it can be produced by separate layer fracturing.
为解决多油层分层压裂作业管柱一旦砂埋封隔器难以解封的难题,研制了多功能分层压裂开关。