开合历史分为前震旦纪、古生代和中、新生代三大阶段。
The opening and closing history may involve three major stages: pre-Sinian, Paleozoic and Meso-Cenozoic.
盆地周围为前震旦纪变质岩系及古生代灰岩、页岩组成的高丘、低山。
Of, belonging to, or being the geologic time, system of rocks, and sedimentary deposits of the sixth period of the Paleozoic Era, characterized by the development of coal-bearing rock formations.
扬子克拉通北缘米仓山地区前震旦纪变质岩系由后河岩群、八角树片麻杂岩和火地垭群组成。
The pre Sinian metamorphic series in the Micang Mountain area on the northern margin of the Yangtze Craton consist of the Houhe Group Complex, the Bajiaoshu Gneiss Complex and the Huodiya Group.
碧口群黄铁矿型铜金矿床产于前震旦纪古蛇绿岩套中。矿体受一定层位控制，分段集中，成群分布；
The pyrite type Cu-Au-deposit is located in the ophiolite suite of the Precambrian Bikou Group.
碧口群黄铁矿型铜金矿床产于前震旦纪古蛇绿岩套中。矿体受一定层位控制，分段集中，成群分布；
The pyrite type Cu-Au-deposit is located in the ophiolite suite of the Precambrian Bikou Group.
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