摘要
驼路沟钴矿床位于东昆仑造山带昆南复合拼贴带内,是国内少数独立钴矿床之一。赋存地层为奥陶—志留纪纳赤台群哈拉巴依沟组,矿体呈似层状、透镜状产出,矿体产状与围岩一致,层位、构造控矿特征显著,变形变质强烈,沿走向和倾向均有斜列和波状弯曲、膨大、缩小现象。矿床热液叠加成矿显著,表现出"似层非层、似脉非脉"的特点,成矿后改造使矿段间差异性抬升和矿体侧伏明显,矿床成因为热水沉积-热液叠加改造型。
Tuolugou cobalt deposit, one of a few independent cobalt deposits in China, is located in southern compound margin of Eastern Kunlun orogen. The stratum is from Helabayigou Formation of Nachitai Group during Ordovician-Silurian. The ore bodies occur as layers and also as lenticles, their occurrence is consistent with wall rocks, with well marked characters of layer and ore control. They underwent intensively metamorphism and deformation, giving rise to diagonal, undulant curving, swelling and shrinking occurrences both along the striking and dipping directions. It is a significant hydrothermal superimposed deposit, with the characteristics of ＂stratiform but not bed, vein-like but not vein＂, post-mineralization activities result in diverse uplifting and obviously lateral trending of ore bodies, and it is affirmed to be a hydrothermal superimposition deposit.
出处
《世界地质》
CAS
CSCD
2008年第1期7-13,29,共8页
World Geology
基金
国土资源大调查"东昆仑成矿带重大找矿疑难问题研究"(200310200012)
关键词
成矿特征
热水沉积-热液叠加改造
控矿规律
驼路沟
青海
metallogenic features
hydrothermal superimposition deposit
ore-controlling regularity
Tuolugou
Qinghai
