The phosphorus reserves in Xifeng are a main composition of phosphorus rock deposit formed during the Sinian Period in the center of Guizhou.
息烽磷矿是黔中元古代震旦纪陡山沱期磷块岩矿床的重要组成部分。
Based on sequence strati graphy work for the outcrops in tarim basin the author sets up the sealevel changes curve of sinian period to devonian period.
根据对塔里木盆地露头剖面的层序地层学研究，建立了震旦-泥盆纪古海平面变化曲线。
Based on sequence stratigraphy work for the outcrops in Tarim Basin, the author sets up the Sealevel changes curve of sinian period to Devonian period.
根据对塔里木盆地露头剖面的层序地层学研究，建立了震旦—泥盆纪古海平面变化曲线。
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