The Preliminary Study Of Paleozoic Intermediate-acid Magmatism And Cu-Au Metallogenic Regularity In The Northern Of West Junggar

The western Junggar hyperplasia orogenic belt is located in Central Asian Orogenic Belt. It has experienced the whole process of the ancient asian ocean’s cracking, subduction, collision and close since Cambrian. Accompanied by the corresponding magmatic mineralization. In this paper, with the guidance theory of plate tectonics and the theoretical basis of the modern magma forming theory, based on previous research results and in a detailed field investigation,We have carried out the systematic research in magma(magmatic hydrothermal) mineralization and the law of mineralization in this area, has achieved the following results:1. According to the petrology and particle size analysis of Malasu group b and c passages, revealed the set of the rock should be shallow marine deposits.2. The Zircon LA-ICP-MS U-Pb age of granodiorite and monzonite diorite porphyry of akeqqiaoke is 410.5±2.9Ma.and the diorite, k-feldspar granite, alkali granite of Xiemisitai U-Pb age is 414-420Ma, the two constitute the late Silurian-early Devonian tectonic-magmatic belt. akeqiaoke porphyry copper deposit should be the result of Kujibai-Hongguleleng ophiolite represented of the ancient ocean southward subduction and partial melting in the early Devonian.It is adakite metallogenic model.3. Devonian Mala Su group c section and upper Devonian group Zhulumute group are metallogenic belt, mainly quartz vein.The LA-ICP-MS U-Pb age of k-feldspar granites in northern of Mu Su Kourou related is 301.1±3.4Ma, formed in the late late Carboniferous.Show that the Cu, Au mineralization is related of magmatic or hydrothermal, formed in the post-collision tectonic environment. Ore body is under the control by regional structures.4. Based on geological conditions we have preliminary delineated two metallogenic potential areas:(1) akeqiaoke porphyry copper deposits prospect area; (2) Kezileikeya (magma) hydrothermal Cu-Au mineralization prospect area.