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| Tectonic geochemistry of the central segment of the East Kunlun Mountains in Qinghai Province and its geological significance |
| AN Guo-Ying |
| China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 100083, China |
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Abstract Geological survey in the middle part of East Kunlun Mountains is very insufficient. Based on geochemical information of 39 elements and oxides acquired by the scale 1:500,000 regional geochemical exploration, this paper deals with the geochemical characteristics of different tectonic units and major fault structures, combined with geological background. According to the parameter values of the elements,this paper sums up the elements distribution of different tectonic units and the basic law of earth crust evolution,and classifies groups of elements anomalies into seven elements geochemical anomaly zones in the region. Different fault structures have different geochemical characteristics, i.e., high-temperature ore-forming elements occur in Kunzhong faults whereas low-temperature metallogenic elements exist in Kunnan faults, so that the most important Au-Cu and Au-Sb polymetallic belts lie on both sides of Kunzhong faults and Kunnan faults zones. The mineralization in the different tectonic units shows different features from the north to the south,i.e., the elements evolved in order of Cu, Cd, Fe, Au, Pb, Zn, Ag, W, Sn-Au, As, Sb, Cu (Co), Pb, Zn-Au, Sb, As, Hg (Cu, W, Sn) southward.
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Received: 16 December 2013
Published: 10 February 2015
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