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Sichuan Urban And Rural Areas - Inagi - Tak Wing Copper Metallogenic Regularities And Prospecting Model

Posted on:2007-08-05Degree:MasterType:Thesis
Country:ChinaCandidate:X ChenFull Text:PDF
GTID:2190360185969871Subject:Mineralogy, petrology, ore deposits
Abstract/Summary:PDF Full Text Request
The units—Xiangcheng, Daocheng and Derong County located in the south of Yidun-Zhongdian island arc belt, which is a concentrated zone of nonferrous and rare metals in the middle-north of the Sanjiang tectonic belt. Since Indosinain epoch, this area experienced an evolution history including subduction orogeny of oceanic crust, collision orogeny and intra-continental orogeny. So, according to metallogeny, it will be very prospective to perambulate porphyry copper deposits in the region.Through the study of the regional structure, regional strata, regional magmatic rock, regional geophysical, geochemical, RS character, regional minerals distributing in this area, we analise the classical deposit, the background of the deposit, matter origin of the deposit ,deposit genesis . Based on that, we divide the minerogenic belt, anlayse the minerogenic system ,and generalize the minerogenic regular.We generalized three Porphyry Copper: Hongzhuo deposit is Island arc Porphyry Copper, which is same as the Pulang Porphyry Copper and Hongshang Porphyry Copper. These area is the north extension of the Xuejiping-Pulang-hongshan ore belt; nfer from the geochemistry character, the magma of Zhujiding origin form middle-lower side crust, the futures of Volcanic arc granitoids reflect delayed volcanic arc's environment, or at the influence of mantle magma's encroachment, middle-lower side crust melt to form hydrothermal ore porphyry copper, which named transitional type HongZhuo-Rexiang; Rexiang is hot-mould copper formed form the fusing of superficial part of earth under the environment of intraplate depression. The copper content of this kind of magma depend of deep focus copper content fluid or participation of magma and the strata that have the highest background of copper in the source regin or the participation of magmatic rock.The minerogenic system is divided into swoop orogenic system and collision orogenic system. Then, the collision orogenic system is divided into extent enviroment magma-liquid minerogenic sub-system and triphibian moving minerogenic sub-system. Hongzhuo is the island-arc porphyry copper series in subduction orogenic metallogenic system, Zhujiding is the magma-constitution hydrothermal ore copper series in the extentional environment magma-fluid metallogenic subsystem, and Rexiang is the hydrothermal ore copper series in intracontinenal strike-slip ore subsystem.We suit the especial geoloy and geography condition use multitechnomeasure, so...
Keywords/Search Tags:Yidun island arc belt, porphyry copper, metallogenic regularity, Ore-prospecting model, exploration model
PDF Full Text Request
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