托克妥环形构造与铜的成矿关系及今后找矿方向

RELATIONSHIP BETWEEN TUOKETUO RING STRUVTURE AND COPPER MINERALIZATION AND PROSPECTING DIRECTION

托克妥环形构造处于昆中断裂的次级构造带上,形成于三叠纪,为一火山构造,属于火山颈相。随着青藏高原的抬升,其一直处于剥蚀阶段,至目前最有利于铜成矿的火山口构造已被剥蚀,只留下了火山颈的部分。经研究认为找铜的方向应在火山构造与围岩的接触带上,特别是接触带产状较缓的部位。

Tuoketuo ring structure, located on the secondary tectonic belt of Middle Kunlun fault,was formed in Triassic period and belonged to a volcanic structure of volcanic neck facies. It wascontinuously denuded along with the uplift of Qinghai - Xizang Plateau. Up to now, the crater, the mostfavorable structure to gold mineralization, has been already denuded out and only the volcanic neckremained. So the copper prospecting should gaze at the contact zone between volcanic structure andcountry rocks, especially the gentle position of contact zone.