摘要
阿舍勒是新疆十分重要的铜多金属矿集区,矿化均赋存于下–中泥盆统阿舍勒组火山岩系中。矿化类型多,成矿元素组合复杂（Cu、Cu-Zn、Cu-Zn-Au、Cu-Pb-Zn-Au、Cu-Pb-Zn-Ag）。阿舍勒组火山活动时间是402~375 Ma,矿化时间为394~379 Ma,持续了15 Ma。本文通过对阿舍勒铜锌矿和萨尔朔克金多金属矿的系统研究,提出阿舍勒矿集区矿床模型,认为尽管矿集区铜多金属矿化类型多,成矿元素组合复杂,但成矿均与火山作用有关,属同一VMS成矿系统,只是不同部位存在矿化差异。在火山斜坡和洼地喷流沉积形成层状铜锌矿体和重晶石矿体,补给通道中形成脉状铜（锌）矿体和铜铅锌银矿体,潜流纹岩中形成脉状金铜铅锌矿体,潜英安岩中形成铜矿体,潜火山岩接触带形成铜矿体,在断裂或裂隙中形成铜矿体。
Ashele is a very important polymetallic copper ore-concentrated area in Xinjiang, and the ore are hosted in the volcanic rocks of the Lower-Middle Devonian Ashele Formation. The area hosts diverse types of mineralization and complex combinations of ore-forming elements （Cu, Cu-Zn, Cu-Zn-Au, Cu-Pb-Zn-Au, Cu-Pb-Zn-Ag）. The Ashele Formation formed during 402-375 Ma, and the associated mineralization lasted for 15 Ma in the interval of 394~379 Ma. Systematic study of the Ashele copper-zinc deposit and the Sarsuk polymetallic gold deposit, and combined with a detailed study of the data available, the authors put forward a metallogenetic model for the Ashele ore-concentrated area. Despite the diverse types of mineralization and complex combinations of ore metals, the ore-forming processes were closely associated with the volcanism as a unified VMS mineralization system, only different in occurrences. The layered copper-zinc orebodies and barite orebodies were formed by exhalative sedimentation in the volcanic slopes and depressions, the veinlet copper （zinc） orebodies and copper-zinc-lead orebodies were formed in the stringer or stockwork zone, veinlet gold-copper-lead-zinc ores were formed during the intrusion of the rhyolite porphyry. The copper ores ere formed in the dacite porphyry, subvolcanic contact zones, as well as fault or fracture.
出处
《大地构造与成矿学》
EI
CAS
CSCD
北大核心
2016年第4期701-715,共15页
Geotectonica et Metallogenia
基金
国家自然科学基金项目(41272103)
"十二五"国家科技支撑计划项目(2011BAB06B03-02)联合资助
