基底变质岩的成分和形成时代对揭示地壳演化至关重要。
The compositions and formation history of basement metamorphic rocks are the key to understanding crust evolution.
根据显微构造和电子探针结果分析可知，研究区基底变质岩经历过至少三次变形变质作用。
According to microstructural and electron microprobe analyse, it has been determined that at least three metamorphic stages occurred in the basement metamorphic series in the region.
成矿物质主要来源于基底太古界变质岩系。
The metallogenic substance mainly comes from the Archeozoic metamorphic rock series in basement.
盆地的基底是前寒武系变质岩。
Precambrian metamorphic rocks constituted the basin basement.
成矿流体为中低温、低盐度、弱酸性、低氧逸度和硫逸度。成矿物质主要来源于基底太古界变质岩系。
The ore-forming fluid is of medium-low temperature low salinity and low fugacity of o2and s2. the metallogenic substance mainly comes from the archeozoic metamorphic rock series in basement .
盆地基底为花岗岩和中高级变质岩，铀源条件良好。
Granite and metamorphic rock constituted the basement of the basin with better uranium source conditions.
古流向和物源恢复结果证明，盆地沉积物主体来自北部和西部变质岩基底。
Sediments were demonstrated to have mainly come from metamorphic basements on the north and west.
古流向和物源恢复结果证明，盆地沉积物主体来自北部和西部变质岩基底。
Sediments were demonstrated to have mainly come from metamorphic basements on the north and west.
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