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茶布-双湖地区广泛出露了早二叠世和晚三叠世的基性火山岩类和少量的异剥辉石岩、异剥橄榄岩脉体和玻基辉橄岩的异离体。这些超基性岩,是幔源熔体深部结晶或拉斑玄武岩浆早期分凝作用的产物;研究表明,本区基性超基性岩和火山岩不构成蛇绿岩组合,火山岩的地球化学属性与MORB有本质的差别。火山活动发生在以陆壳为基底的初始拉张的板内裂陷槽环境。
Tea cloth - Shuanghu area is widely exposed in the Early Permian and Late Triassic of the basic volcanic rocks and a small amount of alopecloxene, de-pealed peridotite veins and bodignet body dissociation. These ultrabasic rocks are the result of the deep crystallization of mantle-derived melt or the early segregation of tholeiitic basalt magma. Studies have shown that the basic ultrabasic rocks and volcanic rocks in this area do not constitute the ophiolite assemblage. The geochemical properties of volcanic rocks There are essential differences with MORB. Volcanic activity takes place in an initially stretched intraplate rift trough environment based on the continental crust.