湖北钟祥莲花山矿段含磷岩系稀土元素特征及热水沉积

REE characteristics and hydrothermal sedimentation of phosphate rock series in Lianhuashan,Zhongxiang,Hubei

通过对莲花山矿段含磷岩系稀土元素特征分析,确定了含磷岩系物质来源与基底片麻岩无关,而与热水相关,为正常沉积叠加海相热水、热液,正常沉积物质来源于剥蚀新元古代地层,地层中的P、Mg等溶于海水,通过机械、化学沉积形成含磷岩系,热水物质来源为深部岩浆活动的物质和热水、热液活动运移过程中萃取新元古代花岗岩体的P、Mg、Si等。

Based on the analysis of the rare earth elements in the phosphate rock series of Lianhuashan section, it is determined that the material source of Phosphate rock series is independent of the basement gneiss and is related to the hot water, which is the normal deposition and superimposed marine hot water, hydrothermal.The normal deposition material is derived from denuded Neoproterozoic strata, and P, Mg in the formation is dissolved in seawater, eventually, the phosphate rock system is formed by mechanical and chemical deposition.The source of hot water is deep magmatic active material, and P, Mg, Si etcectrectrd from Neoproterozoic granite when hot water and hydrothermal are migration.