欢迎访问现代地质!

现代地质 ›› 2018, Vol. 32 ›› Issue (03): 481-492.DOI: 10.19657/j.geoscience.1000-8527.2018.03.06

• 地球化学 • 上一篇    下一篇

青海省纳日宗地区水系沉积物地球化学特征及找矿远景

胡兆国1(), 张少鹏2, 连国建1, 王磊3, 李绪蛟4, 李仕远5, 张之武6, 杨生飞2, 胡加斌1, 王小玉1, 赵晓博1, 张扬1   

  1. 1.中国冶金地质总局 山东正元地质勘查院,山东 济南 250014
    2.山东黄金矿业股份有限公司 资源勘查事业部,山东 济南 250100
    3.中国地质调查局 西安地质调查中心,国土资源部岩浆作用成矿与找矿重点实验室,陕西 西安 710054
    4.山东省冶金设计院股份有限公司,山东 济南 250101
    5.中国石油天然气股份有限公司 青海油田分公司,甘肃 敦煌 736202
    6.中国冶金地质总局,北京 100025
  • 收稿日期:2017-06-26 修回日期:2018-03-06 出版日期:2018-06-10 发布日期:2023-09-22
  • 作者简介:胡兆国,男,工程师,1983年出生,自然地理学专业,主要从事矿产勘查及勘查地球化学研究工作。Email: zhongguoren-hu@163.com
  • 基金资助:
    中国地质调查局项目“青海省天峻县纳日宗地区矿产远景调查”(1212011140096);中国地质调查局项目“云南1∶5万临沧县(F47E001017)、博尚(F47E002017)、懂过(F47E002016)、勐库(F47E003016)四幅矿产地质调查”(WT[2017]-129)

Geochemical Characteristics of Stream Sediments and Prospecting in the Narizong Area, Qinghai Province

HU Zhaoguo1(), ZHANG Shaopeng2, LIAN Guojian1, WANG Lei3, LI Xujiao4, LI Shiyuan5, ZHANG Zhiwu6, YANG Shengfei2, HU Jiabin1, WANG Xiaoyu1, ZHAO Xiaobo1, ZHANG Yang1   

  1. 1. Geological Exploration Institute of Shandong Zhengyuan, China Metallurgical Geology Bureau, Jinan, Shandong 250014, China
    2. Shandong Gold Mining Co.LTD Resources Exploration Division, Jinan, Shandong 250100, China
    3. Key Laboratory for the Study of Focused Magmatism and Giant Ore Deposits, MLR, Xi’an Center of Geological Survey, China Geological Survey, Xi’an, Shaanxi 710054, China
    4. Shandong Province Metallurgical Engineering Co.LTD, Jinan, Shandong 250101, China
    5. Petrochina Qinghai Oilfield Company, Dunhuang, Gansu 736202, China
    6. China Metallurgical Geology Bureau, Beijing 100025, China
  • Received:2017-06-26 Revised:2018-03-06 Online:2018-06-10 Published:2023-09-22

摘要:

纳日宗地区位于南祁连岩浆弧和宗务隆山—夏河—甘加裂谷的接触部位,该区及其周边已发现金属矿床(点)10余处,具有良好的金、铅、铜矿找矿前景。以该区1∶5万水系沉积物测量的16种元素含量数据为基础,统计分析了水系沉积物地球化学参数、元素相关性、成矿有利度系数等指标,总结了元素组合、富集贫化规律及其与地质背景、地质构造与成矿作用的关系。区内主要富集元素为Sn、Pb、Bi、As、Sb,成矿有利度系数高的元素有As、Pb、W、Au、Bi、Sb。结果显示,水系沉积物元素异常沿NW—NWW向断裂构造分布,初步认为构造发育地段具有较好的Au、Pb、W找矿潜力。依据单元素异常特征和成矿地质条件,圈定综合异常74处,划分出3个找矿远景区,指出了各找矿远景区的找矿方向。

关键词: 水系沉积物, 地球化学特征, 找矿预测, 纳日宗地区, 青海

Abstract:

The Narizong area in Qinghai Province is located at the boundary between the southern Qilian Mountain magmatic arc and Zongwulong Mountain-Xiahe-Ganjia rift valley. A series of small-sized metallic mineral deposits (occurrences) distribute in and around the Narizong area. Based on the stream sediment geochemical data at scale 1∶50 000,the authors studied the characteristics of geochemical parameters, relativity analysis of elements, metallogenic advantage coefficient, and summarized the relationship among elements assemblage, element enrichment and dilution regularity with geological background, tectonics, mineralization. The major enrichment elements are Sn,Pb,Bi,As and Sb. The elements with high ore-forming favorable coefficient are As,Pb,W,Au,Bi and Sb. The results show obvious elemental anomalies along NW and NWW trending faults. It suggests that there is the explorational potential for gold, lead and wolfram in the structural zone. Seventy-four anomalous zones and three metallogenetic prospective areas in the Narizong area were delineated, based on the geologic information and elemental anomalies.This work expected to provide useful information for the future exploration.

Key words: stream sediment, geochemical feature, exploration prediction, Narizong area, Qinghai

中图分类号: