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北巴颜喀拉造山带是青海重要的贵金属成矿带,金矿床(点)众多,矿床的形成与巴颜喀拉洋的演化有密不可分的联系,矿床的形成与晚华力西—印支早期巴颜喀拉洋的俯冲、碰撞造山作用及该区广泛发生的印支晚期幔源岩浆的侵入活动有较密切的成因联系。赋矿地层为三叠纪巴颜喀拉山群浅变质浊积岩系,与世界上其它地区浊积岩型金矿床类似,相当于Groves等(1998)提出的造山型金矿床。矿脉常顺层产出,层控特征明显,主要产于含碳泥质板岩、变钙泥质粉砂岩中。区内金矿床(点)具有相似的成矿地质—地球化学特征,矿脉受褶皱和韧脆性断裂双重控制,且以韧脆性断裂为主,金矿化强度与蚀变强度呈正比,成矿地质条件优越,已显示出很好的成矿和找矿潜力,研究该区金矿成矿作用和矿床特征具有重要的理论和实际意义。
The North Bay Yanke orogen is an important precious metal metallogenic belt in Qinghai. There are many gold deposits (points), and the formation of the deposit is inextricably linked with the evolution of the Bayan Karayang. The formation of the deposit is associated with the late Waxi- The early Palekalayang subduction, collision orogeny and the widespread occurrence of Indosinian mantle magmatism intrusion in the area are closely related to each other. The ore-bearing strata are the Triassic Bayankela Group super-metamorphic turbidite series similar to turbidite-type gold deposits in other parts of the world and are equivalent to the orogenic gold deposits proposed by Groves et al. (1998). Regular vein layer output, stratum control characteristics are obvious, mainly produced in carbonaceous muddy slate, calcareous siltstone. The gold deposits (spots) in the area have similar geologic-geochemical characteristics. The veins are controlled by folds and ductile-brittle faults. Ductile-brittle faults are the main features of the gold deposits, and the gold mineralization strength is in direct proportion to the alteration strength. The ore-forming geology It has good conditions and has shown a very good potential for mineralization and prospecting. It is of great theoretical and practical significance to study the gold mineralization and deposit characteristics in this area.