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

• Geochemistry • Previous Articles     Next Articles

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

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

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