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陈家坝变质火山体系位于太古代扬子陆壳西北边部康略勉初始裂谷，是在裂谷纪大陆拉张后期所生成的一个浅海海底中一酸性火山体系。它包括同源成串的裂隙式火山机构、火山塌陷构造和塌陷被动侵位的岩塞。火山机构的五次喷发堵塞阶段与刘家沟组凝灰岩系的五个喷发沉积阶段、岩段之间有着明显的成因对应关系。原岩属于陆壳来源型的富镁安山岩－英安岩－流纹岩组合。在较厚的近火山灰锥锥坡海底洼地相的角斑质火山尘凝灰岩层中，夹有含金银的多金属重晶石岩透镜层—含金银的喷流矿层。在海底火山塌陷锅状洼地卤水槽内，有块状硫化物矿层。
The Chenjiaba metamorphic volcano system is located in the Kangliang initial rift on the northwestern margin of the Archean Yangtze continental crust. It is an intermediate-acidic volcanic system in the shallow sea of the late Cretaceous period. It includes the same series of fractured volcanic structures, volcanic collapse structures and collapsed passive emplacement rock plug. The five eruptions of volcanic bodies and the five eruptions and depositional stages of the tuff series of the Liujiagou Formation have obvious genetic correlations. The original rocks belong to continental-derived magnesian andesite-dacite-rhyolite assemblages. In the thick hornblende volcanic dust tuff layer in the submarine depressions near the bottom of the volcanic cone conic slope, a gold-silver polymetallic barite lens layer, a gold-silver jet stream, is sandwiched. In the submarine volcano collapse pot-shaped depression brine tank, there are massive sulfide deposits.