东昆仑菜园子沟地区锰矿地质特征及找矿标志

The Geological Characteristics and Prospecting Criteria of Manganese Deposit in Caiyuanzigou Area,East Kunlun

菜园子沟地区位于纳赤台—驼路沟成矿带,该成矿带地处东昆仑南部,属活动区造山带,成矿期次多,类型复杂。通过近年的工作,在该区1∶5万水系沉积物HS38号综合异常内发现1条锰矿带,圈出锰矿体,主要出露地层为中—新元古代万保沟群碳酸盐岩组及中生代三叠纪洪水川组。在对菜园子沟地区锰矿地质特征研究基础上,分析其地质背景、控矿因素、赋矿层位及含矿岩系等,结合地物化特征综合分析其找矿标志,为该区以后的地质工作提供参考。

Caiyuanzigou area is located in Nachitai-Tuolugou metallogenic belt,which is located in the southern part of east Kunlun Mountains.It belongs to the active orogenic belt.In recent years,a manganese ore belt was discovered in the comprehensive anomaly of 1∶50,000 river sediment HS38 in this area.The manganese ore body was circled.The main outcrop strata were the carbonate group of Wanbaogou group in the Middle-Neoproterozoic and Mesozoic Triassic Hongchuan Formation.Based on the geological characteristics of manganese deposits in Caiyuanzigou area,we have made an analysis of its geological background,ore-controlling factors,ore-bearing horizons and ore-bearing rock series.Combined with geophysical and chemical characteristics,we have comprehensively analyzed its prospecting indicators,which is the future geological work for reference.