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辽宁盖县梁屯_矿洞沟岩体由霓辉角闪正长岩、霓辉正长岩、角闪正长岩、辉石正长岩以及正长霓辉岩构成 .结合该岩体的Rb_Sr同位素测定结果进行了年代学和地质意义问题的讨论 ;提出该岩体形成于早元古宙、是辽东拉张性构造标志的看法 ;并认为该岩体的存在指示出其变质围岩应形成于 1 90 0Ma以前
The Liangtun-ore-ditch rock mass in Gaixian County, Liaoning Province is composed of NeiGuiJiao flash syenite, Ni-Hui syenite, hornblende syenite, pyroxene syenite and ortho-long Ni Hui. Rb_Sr isotope determination of the results of the chronological and geological significance of the discussion; proposed that the rock body formed in the Early Proterozoic, Liaodong tensile structure is a sign of the view; and that the presence of the rock indicates the metamorphic rocks should be Formed before 1 90 0Ma