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四川西南部前震旦纪康定杂岩,主要由英云闪长质深成岩和一些具残留顶盖特征的变质地层组成。深成岩体呈南北向线性展布,实地接触关系证明,它们是晚于围岩的侵入体;而且岩相学和地球化学特征表明,深成岩是玄武质源的岩浆分离结晶作用产物.结合区内岩石构造组合,可以推断英云闪长质深成岩是在位于陆缘型岩浆弧近大洋的构造环境下形成.鉴于康定杂岩的岩石组合及地球化学特征与太古代地体存在明显差别,其时代应属于元古代.
The former Sinian Kangding complex in the southwestern Sichuan mainly consists of Yingyun dioritic plutons and some metamorphic strata with residual roof features. The plutons are linearly distributed in the north and south direction, and the in-situ contact relationship proves that they are intrusive later than the surrounding rocks. And the petrographic and geochemical characteristics indicate that the plutons are the product of magmatic separation and crystallization of basaltic origin. Tectonic assemblage, it can be inferred that the dioritic diagenetic diagenesis of the Yingyun Formation was formed under the tectonic setting of the marginal magmatic arc near the ocean.Because the rock assemblages and geochemical characteristics of the Kangding complex are obviously different from those of the Archean, Belongs to the Proterozoic.