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Orebody Characteristics and Mineralization Stages of the Qiushuwan Cu‐Mo Deposit in the Eastern Qinling, China
Author(s) -
CHENG Yongsheng,
QIN Zhen
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12374_5
Subject(s) - china , chinese academy of sciences , christian ministry , mineralization (soil science) , geochemistry , geology , mineral resource classification , mining engineering , library science , geography , archaeology , political science , soil water , law , soil science , computer science
The Qiushuwan copper-molybdenum deposit is located in southern Erlangping terrain in the eastern part of North Qinling tectonic belt. The area has undergone the very complex of tectonic movement and tectonic evolution, where the exposed strata are mainly the Qinling group which experienced complicate tectonism and metamorphism, mainly consisting of Guozhuang group (Pt1g) and Yanlinggou group (Pt1y), from the old to the new formation along the stratum from north to south. Qiushuwan copper-molybdenum deposit situates in the southern of Sikeshu anticlinorium, with the NWW and NW structure and the late NNE faults in the consistent direction with the regional structure. In Qiushuwan copper-molybdenum mine area, the fault structures are developed well, which can be divided into two groups, a group of longitudinal fracture (NW, NWW) paralleling to the formation, another group of transverse fracture in the direction of NE. In Qiushuwan copper-molybdenum mine area, the exposed rocks are composed of biotite granites and vein rocks. In Yanshan period, the magmatic activities dominated by the acid intrusive rocks and the subvolcanic rocks, which are usually characterized by the small-scale. The significant alteration phenomena on both sides of the magmatite rock and dike rock suggest a close relationship with the regional mineralization.