Qinling Devonian Fengtai Mine Pool Water Deposition Of Gold - Built By The Multi-metal Ore Mineralization Construction And Metallogenic Model

Qinling orogen is a composite continental orogen with a complex evolution history. Studying on hydrothermal sedimentation gold-polymetal ore formation forming, evolution and the characteristic of being changed, not only can help explore metallogenetic dynamics, but also can help study metallogenetic system and evolution. On the basis of modern plate and metallogenetic dynamics theory, the search selected THE MINEROTECT ANALYSIS AND METALLOGENETIC MODE STUDING OF THE HYDROTHERMAL SEDIMENTATION GOLD-POLYMETAL ORE FORMATION IN FENGTAI MINE GATHER REGION IN THE DEVONIAN IN QINLING OROGEN which is the object of studying Though studying Qinling orogen forming and evolution, especially studying the background of the metallogenetic tectonic of the Devonian system in Qinling, the search considers that the formation is the especial unit, which have formed in Qinling orogenic evolution process. The Devonian hot-water sediment basins control the distribution of the formation. The third-rank hydrothermal sediment subbasins of Fengtai ore gather region in Devonian is the deposits collected region. The characteristic of the frame, structure, filled deposits and the history of the evolution of the third-rank subbasins directly control the types and distribution of the formations. The floor of Fengtai hydrothermal sediment basin controls the formation difference between the third-rank subbasins and relation to Fuping arch.On the basis of the tectonic place of Qinling hydrothermal sedimentary basins in Devonian, the characteristic of the ore formation and the minerotect, the series and partition scheme of the formations have been initially studied and their characteristic have been come to conclusions first time. Fengtai mine gather region has been derived into four the third-ranks tectonic subbasins, and built tow third-ranks ore subformations and minerotect modes. The research has advanced the thought and studying ways of the minerotect analysis.With formation analyzing principle, on the basis of studying the tow mainly third-rank ore subformations, the search have been show. The genesis of the hydrothermal sediment and changed Cu-Pb-Zn subformations is the hot water cascading sediment, which develops on carbonate platform in Epicontinental Sea, the third-ranks tectonic subbasins and the contemproaneous fault with hydrothermal sediment control the mineralization process. The siliceous rock is mineral formations which are reef and siliceous rock formation. The mineralizing matter in the mineral formation that is activated, remobilize and got to gather form the great scale rich Cu-Pb-Zn deposit during main orogenic time. The genesis of the hydrothermal sediment turbidite, shear altered rock and enriched by igneous exudation products from mantle have composite mineralization and the complex genesis. Because it have gone through a composite process with a polycyclic mineralization. The hydrothermal sedimentation, which growth deep-hemideep-water facies turbidite in the third-ranks tectonic subbasins, is the mineral formation. The sodic hydrothermal sediment form golden source bed. During the main organic epoch shearing and shear fluid form the body of the gold ore formation by the great scale fault. Shearing not only activated, remobilize and got to gather gold from the mineral formation, but also bring into gold and mineralizing fluid from deep place. During the continental orogenic epoch, magma activity make gold enrich again, and form the great scale gold deposit of the ore formation.By synthetically researching the hydrothermal sedimentary formations and the construct of hot water cascading alleyway, the research consider that the fluid of the siliceous Pb-Zn hydrothermal sediment and the sodic Au hydrothermal sediment is tow difference phases of the same hot water cascading evolution cycle. It is controlled by tectonic of the sedimentary floor, and especially by the vertical blowups of Fuping arch. The hot water cascading fluid is acidic mineralizing fluid with enriching Pb-Zn-Cu in beginning, then it is alkalic...