...详细信息 关键词： 埕岛油田;;前寒武系;;构造演化;;储层特征;;变质岩;;裂缝 [gap=1344]Keywords: Chengdao Oilfield;Precambrian;tectonic evolution;reservoir characteristics;metamorphic rock;crack ..
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... multimeter 多用表 precambrian-cretaceous 前寒武系 tall-stature 高身材 ...
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末前寒武系 terminal precambrian
上前寒武系 upper precambrian
前寒武系-寒武系界线 precambrian-cambrian boundary
前寒武纪岩系 Precambrian succession
前寒武纪结晶岩系 Precambrian crystalline rock series
盆地的基底是前寒武系变质岩。
Precambrian metamorphic rocks constituted the basin basement.
它们均位于前寒武系隐伏基底及其边缘结合部位。
They exist in the verge and the combine zone of Cambria system insidious bases;
在东秦岭前寒武系变质岩中，发育了许多Z字型叠加褶皱。它们是由近直立的片麻岩和长英质脉形成的。
Z-shaped superposed folds formed by nearly vertical gneiss and feldspar-quartz veins are widely developed in East Qinling Precambrian metamorphic rocks.
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