新疆温泉县托克赛铅锌矿床地质地球化学特征及成因

发布时间：2018-04-30 14:43

本文选题：硅质岩 + 热水沉积　；参考：《中国地质大学(北京)》2015年硕士论文

【摘要】：新疆温泉县托克赛铅锌矿床是近年新疆在西天山找矿的又一重大发现,托克赛铅锌矿床位于哈萨克斯坦-伊犁板块北部的赛里木微地块北缘,与哈萨克斯坦境内的捷克利超大型铅锌矿可类比。本文对托克赛铅锌矿床的地质特征、同位素地球化学特征进行了研究,获得了如下认识:①托克赛铅锌矿床形成于大陆边缘环境,可能与元古宙被动大陆边缘拉张、裂陷作用有关。矿体赋存于古元古界温泉群大理岩中,矿体呈层状、似层状产出,受层位控制明显,与地层同步变形。矿石具块状、层状、和浸染状构造。矿区侵入岩脉及其附近未见相关有用元素矿化富集。②托克赛铅锌矿床的地质和地球化学特征表明:托克赛矿区硅质岩为热水沉积成因,大理岩为正常沉积碳酸盐岩经变质作用形成。③本文综合托克赛铅锌矿床的地质和地球化学特征分析,认为托克赛铅锌矿床为SEDEX型铅锌矿床。④托克赛铅锌矿与相邻的哈萨克斯坦捷克利铅锌矿床在成矿环境、赋矿层位、矿化类型、矿床成因等方面具有可比性,显示出巨大的找矿前景,托克赛铅锌矿床的发现也证实了捷克利铅锌成矿带延入我国赛里木湖一带。托克赛铅锌矿的发现进一步证实元古宙为铅锌成矿的重要时期,佐证哈萨克斯坦捷克利铅锌成矿带向东延入我国新疆赛里木湖一带,对开展西天山北部地区铅锌矿找矿和成矿规律研究具有重要意义。
[Abstract]:The Tokesai Pb-Zn deposit in Wenquan County, Xinjiang, is another important discovery in Xinjiang in recent years for prospecting in the West Tianshan Mountains. The Tokesai Pb-Zn deposit is located in the northern margin of the Selimu microblock in the northern part of the Kazaka-Yili plate. It is analogous to the Czech super-large-scale lead-zinc mine in Kazakhstan. In this paper, the geological characteristics and isotopic geochemical characteristics of the Tokesai Pb-Zn deposit are studied. The following conclusions are obtained that the Tokesai Pb-Zn deposit was formed in the continental margin environment and may be extensional from the Proterozoic passive continental margin. Rifting is related. The orebody occurs in the marble of the Paleoproterozoic hot spring group. The orebody is stratiform and stratiform, which is obviously controlled by the horizon and deformed synchronously with the strata. The ore is massive, layered, and disseminated. The geological and geochemical characteristics of the intrusive vein and its adjacent mineralized and enriched 2.Tokesai lead-zinc deposit indicate that the siliceous rocks in the Tokesai mine are of hydrothermal sedimentary origin. Marble is a normal sedimentary carbonate rock formed by metamorphism. 3 the geological and geochemical characteristics of the Tokesai lead-zinc deposit are analyzed in this paper. It is considered that the Tokesai lead-zinc deposit is a SEDEX type lead-zinc deposit, which is comparable with the adjacent Czech Lead-zinc deposit of Kazakhstan in the metallogenic environment, ore-bearing horizon, mineralization type, ore genesis and so on. The discovery of the Tokesai Pb-Zn deposit also confirms that the Czech Lead-Zinc metallogenic belt extends into the Selimu Lake area of China. The discovery of the Tokesai lead-zinc deposit further confirmed that the Proterozoic was an important period for lead-zinc mineralization, and that the Czech Lead-zinc metallogenic belt of Kazakhstan extended eastward into the Sailimu Lake area of Xinjiang, China. It is of great significance to study the prospecting and metallogenic regularity of lead and zinc deposits in the northern part of the western Tianshan Mountains.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.4

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