青海仓家峡地区高精度磁测特征及找矿前景?

详细信息

刊出日期: 2015-04-25

The Anomalies of Ground High-precision Magnetic Survey and the Ore Forecast in Cangjiaxia Area of Qinghai Province

Publish Date: 25 April 2015

摘要: 为了查明青海仓家峡地区地层、岩浆岩与成矿之间的关系,开展了地面高精度磁测工作。通过分析磁异常特征,划分出5个异常区域,推断出两条控矿断裂。经对比分析,CYC-2异常与小西沟磁铁矿点相对应,CYC-3异常与近祥滩铁矿点对应较好,异常特征反映了矿体的规模和展布。推测CYC-1、CYC-4和CYC-5为隐伏磁铁矿引起的磁异常。磁异常均呈现在岩体与地层的接触带附近,为本区寻找热液型的铁、铅、锌矿提供了重要指导信息。
- 高精度磁测 /
- 仓家峡地区 /
- 磁铁矿
Abstract: To identify the relationship between stratum, igneous rock and mineralization in the Cangjiaxia area, ground high-precision magnetic survey was made. This area was divided into five magnetic anomaly regions and two ore-controlling faults were inferred. C-2 magnetic anomaly cor-responds with Xiaoxigou mineral occurrence very well, while the CYC-3 corresponds with Jinxiang-tan ore spot, of which the magnetic anomaly reflects the size and distribution of the ore body. It is speculated that CYC-1, CYC-4 and CYC-5 were caused by hidden magnetite deposit. All mag-netic anomaly appear nearby in the contact zone of stratum and rock mass. The guidance for pros-pects of hydrothermal iron deposits and lead-zinc deposits in these areas is provided in this paper.