初始地壳，尤其是前寒武纪的变质基底是金矿密集区形成的物质基础。
It is thought that the original crust, especially the metamorphose basement of Precambrian is the base of gold-ore formation.
由此可以认为伸展构造亦是控制统一变质基底与沉积盖层的形成机制之一。
Therefore, the extensional movement is also one of the mechanisms for controlling formation of the unifying metamorphic basement and sedimentary cover.
伊盟隆起具有继承性，继承了结晶基底的形态，上石炭统太原组直接覆盖在变质基底之上。
The Yimeng paleouplift inherits the shape of the crystalline basement, with the Upper Carboniferous directly covering the metamorphosed basement;
表明它们具有明显的亲缘关系，可能来源于具有古元古代晚期地壳形成年龄的同一变质基底。
This implies that they have close affinity, and probably are derived from same metamorphic basement with a crust formation age of late Paleoproterozoic.
九岭南缘安义珠洛山变质基底地层中也发育有辉绿岩岩墙群，其形成时代及成因未作过研究。
The diabase dike group is developed in metamorphic basement in Zhulou Mountain at the South Edge of Jiuling Mountain, their forming era and their origins have not been researched.
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.
变质相由基底岩系的低角闪岩相—高绿片岩相逐渐过渡为上覆盖层的低绿片岩相。
The metamorphic facies gradually change from low amphibolite—high green-schist facies of the basement to low green-schist of the cover.
伊犁中天山区出露早元古代变质结晶基底及晚期地台型稳定盖层。
The early Proterozoic metamorphic crystalline basement and the late stable platform covers are exposed in the Yili-central Tisnshan 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.
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.
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 .
不少学者用变质核杂岩模式解释豫西后造山阶段的基底隆起和与之相伴的盆岭构造的构造格局。
Using metamorphic core complex (MCC) models, many geologists interpret the tectonic framework featuring the basement dome and the basin-and-range tectonics in western Henan in the postorogenic stage.
攀枝花-西昌（攀西）麻粒岩一直被认为是扬子陆块西缘变质程度最高和最古老的结晶基底岩石。
The Panxi (Panzhihua-Xichang) granulites have long been recognized as the oldest rock of the crystalline basement with the highest metamorphic grade on the western margin of the Yangtze Block.
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.
黑龙江省前寒武纪基底具有构造复杂、岩浆活动频繁、变形变质强烈、成矿活动特殊等特点。
The characteristics of Precambrian basement in Heilongjiang province are complex structures, frequent magmatic activity, intense deformation and alteration and particular metallogenic activity.
它们的基底由太古代至元古代早期的粒相和闪石相变质的片麻岩和结晶片岩组成。
Their basement is composed of Archean to early Proterozoic gneisses and crystalline schists metamorphosed at granulite and amphibolite facies.
因此，晚古生界不是松辽盆地和二连盆地的变质结晶基底，它们是一种叠合盆地关系。
Thus we suggest that the Late Palaeozoic sediments are not the metamorphosed basement in the Mesozoic-Cenozoic basins, they are superimposed basins.
因此，晚古生界不是松辽盆地和二连盆地的变质结晶基底，它们是一种叠合盆地关系。
Thus we suggest that the Late Palaeozoic sediments are not the metamorphosed basement in the Mesozoic-Cenozoic basins, they are superimposed basins.
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