proterozoic erathem
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美
- 元古界
双语例句
- The Miaogou boron deposit occurs in granulitite of Liaohe group,lower proterozoic erathem,locating at Daxicha village,Kuandian town,Liaoning.
辽宁宽甸大西岔乡庙沟硼矿赋存于下元古界辽河群含硼变粒岩层位。 - Conglomerate of the Middle Proterozoic Tietonggou Formation is in unconformity relation with the plagioclase schist of the Archean Taihua Group.
中元古界铁铜沟组砾岩，砾石形态多样，与下面的太古界太华群斜长片岩呈角度不整合接触。
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