| nanshanyouke |
2014-04-10 22:26 |
作为终南山世界地质公园的核心景区，太平国家森林公园景区属于冰晶顶韧性剪切带与构造混合岩化园区，分为黄羊坝构造跌水瀑布地貌景群、石门混合岩景群、月宫潭峡谷地貌景群和原始森林景群。
太平景区地处秦岭造山带的二级构造单元北秦岭构造带，从板块地质构造古环境讲，它位于古海沟以北靠近大陆一侧。
太平景区地层主体属于古元古界秦岭群，原岩为陆缘碎屑岩及少量大陆溢流拉斑玄武岩和酸性火山岩，形成于距今22亿年，它是火山岛弧的基底部分。由于古岛弧热流值很高，加之板块俯冲、碰撞、陆内造山等强烈的构造运动，使得秦岭群在古生代曾发生广泛的变形变质作用、混合岩化作用和多期岩浆侵入活动，以加里东期中高级区域变质作用为主。新生代以来断裂构造、风化剥蚀作用的刻划，终于形成了今日丰富多彩的地质构造遗迹。
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