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研究表明:蛇绿岩分布于中国东南部江南元古代东安——雪峰期古岛弧褶皱系西端东南缘桂北龙胜一带。呈北东——南西向带状延伸。通过对蛇绿岩常量元素岩石化学特征进行研究,表明龙胜存在代表洋壳碎片的蛇绿岩套与岛弧成因的蛇绿岩组成的一种复合成因蛇绿混杂岩。微量元素(Zr、Cr,Ti、Sr、Ni等)及稀土元素地球化学特征研究同样得到进一步验证。龙胜一带为元古代雪峰期海沟岛弧系。由于大洋板块从龙胜南东大洋一侧向北西运移,并与古扬子大陆板块碰撞俯冲。代表洋壳碎片的蛇绿岩次生构造定位于消减带上,岛弧成因蛇绿岩则由于洋壳物质潜入于上地幔发生部分分熔再生上升侵位形成。龙胜蛇绿混杂岩从北西向南东分布着三门、龙胜二个次一级的楔状蛇绿岩带,即当时至少有过二次板块俯冲增生作用。这一作用从北西向南东逐渐迁移,反映了中国东南部大陆地壳从北西向南东逐渐迁移、增生的演化特征。
The results show that the ophiolites are distributed in the Longsheng area of Gui Bei southeast edge of the western end of the ancient island arc crevasse system of Dongan-Xuefeng period in southeastern China. North-east-southwest strip extending. The study on the petrochemical characteristics of the ophiolitic elements shows that there is a complex genetic ophiolite melange composed of ophiolite sets representing the oceanic crust and ophiolite of the island arc in Longsheng. The trace elements (Zr, Cr, Ti, Sr, Ni, etc.) and the geochemical characteristics of rare earth elements have also been further verified. Longsheng area for the Proterozoic Xuefeng Trench Island arc system. As the ocean plate from Longsheng South Atlantic Ocean to the north-west side of the migration, and subduction collision with the ancient Yangtze Plate. The secondary structure of the ophiolite, which represents the oceanic crust, is located on the depletion zone. The origin of the ophiolitic ophiolite is due to subduction of oceanic crustal material and partial remelting and uplifting of the upper mantle. The Longsheng ophiolite melange contains two sub-level wedge-shaped ophiolite belts from northwest to south east, ie, at least there were at least subduction of plate subduction at that time. This effect gradually migrated from northwest to southeast, reflecting the evolution of the continental crust in southeastern China that migrated gradually from northwest to southeast and proliferated.