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达拉布特岩带的超基性岩与基性火山岩密切伴随,被认为是一蛇绿岩带。长期以来,这里的基性火山岩被看做是浅海相喷出岩,划归泥盆系或石炭系。由于矿区构造研究的需要,我们对此火山岩带的萨尔托海区段进行了1/1万比例尺的地质填图,结果发现这套庞杂的火山岩整个是一侵入体,侵填在一个巨大的张扭性断裂空间里,连续约四十公里长,可称之谓次火山岩带(图1、2)。
The ultrabasic rocks of the Dalbottite belt are closely associated with the basic volcanic rocks and are considered to be an ophiolite zone. For a long time, the basic volcanic rocks here are considered as shallow-marine faulted rocks and are classified as Devonian or Carboniferous. Due to the needs of the tectonic study of the mining area, we conducted a 1/10000 scale geological mapping of the Salto Sea section of this volcanic belt. As a result, we found that this complex volcanic rock is an invader and invaded in a huge Zhang Torsional fracture space, continuous about 40 km long, can be called the sub-volcanic rock belt (Figure 1,2).