發(fā)布時間：2018-01-29 06:03

  本文關(guān)鍵詞： 喇嘛蘇外圍 物化探 找礦潛力評價 找礦突破　出處：《新疆大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：研究區(qū)位于西天山銅鋅鉛多金屬成礦帶上,屬于典型的多因復(fù)成礦床,受地層、巖漿巖、構(gòu)造等因素控制。該成礦帶為哈薩克斯坦捷克利多金屬成礦帶的東延部分,在成礦背景上存在可對比性,且又處于微陸塊邊緣活動帶,因此區(qū)域成礦條件十分有利;賦礦圍巖為薊縣系庫松木切克群灰?guī)r,由于其化學(xué)性質(zhì)的活潑性,是本區(qū)成礦的有利礦源層;礦區(qū)內(nèi)沿花崗閃長斑巖邊部或其內(nèi)見有礦體,Cu、Zn、Pb、Ag等微特量元素在花崗閃長斑巖內(nèi)富集特征,Cu、Zn、Ag等成礦元素含量變化特點與本區(qū)礦化富集特征吻合,說明花崗閃長斑巖是提供礦源的重要母巖。喇嘛蘇銅礦自1985年開始化探工作至今,前后十余年,先后投入了大量地質(zhì)工作,積累了豐富的地質(zhì)資料,并取得了較多的地質(zhì)成果,已初步確定具有中型以上規(guī)模的礦床遠景,由于研究區(qū)礦床類型尚不清楚、地區(qū)第四系覆蓋較厚以及前期地質(zhì)工作對成礦背景、成礦條件、控礦因素等分析總結(jié)不夠,致使前期工作成果不能有效指導(dǎo)后續(xù)地質(zhì)工作的開展,地質(zhì)工作缺乏延續(xù)性,工作部署前后不一致或前后矛盾。近年來,雖然投入了大量的人力、物力和財力對礦區(qū)外圍進行了找礦工作,但沒有大的突破,仍處于找礦探索階段。因此,實現(xiàn)礦區(qū)外圍找礦的突破,基本查清該地區(qū)礦產(chǎn)資源潛力,為該區(qū)礦產(chǎn)資源開發(fā)提供決策依據(jù),改變該地區(qū)自然地理條件惡劣、貧窮、落后地區(qū)的經(jīng)濟面貌,振興經(jīng)濟有著重要的戰(zhàn)略意義。本論文研究國內(nèi)外相似類型礦床研究基礎(chǔ)上,收集研究區(qū)前人地物化資料,總結(jié)分析各類找礦標(biāo)志,結(jié)合野外實際工作認識及對礦區(qū)前人取得成果對比借鑒,對礦區(qū)外圍進行物化探工作及解譯分析并找礦潛力評價,對外圍找礦方向初步進行了探討。通過物化探異常工作,結(jié)合地質(zhì)異常特征綜合分析,最后經(jīng)過地質(zhì)鉆探驗證工作,初步推斷外圍(喇嘛蘇銅礦北西方向)具有一定的尋找隱伏斑巖型銅(鉛鋅銀)礦的找礦空間。通過地球化學(xué)背景和多元統(tǒng)計分析,提出研究區(qū)Cu、Pb、Zn、Ag等元素具有一定找礦前景,尤其是Cu元素異常規(guī)模大、強度高且化探原生暈異常和激電異常吻合性較好,認為喇嘛蘇礦區(qū)外圍找礦潛力較大,有必要擴大研究范圍進行深入研究工作,深部具有大規(guī)模礦化體存在可能性大。
[Abstract]:The study area is located in the copper, zinc and lead polymetallic metallogenic belt of the West Tianshan Mountains. It is a typical polygenetic complex deposit, which is affected by strata and magmatic rocks. The ore-forming zone is the eastward extension of the Czech Li-polymetallic metallogenic belt in Kazakhstan, which has a comparable metallogenic background and is located in the marginal active zone of the microcontinental block. Therefore, the regional metallogenic conditions are very favorable; The host rock is limestone of Kusong Muchek group of Jixian system. Because of its active chemical properties, it is a favorable ore source bed for mineralization in this area. Along the edge of granodiorite or in the ore body, there are some microelements, such as Cuznznzn Pbng-Ag, in the granodiorite porphyry, which are characterized by the enrichment of Cu ~ (2 +) Zn in the granodiorite porphyry. The variation characteristics of Ag and other ore-forming elements are consistent with the characteristics of mineralization and enrichment in this area, indicating that granodiorite is an important source of ore. Since 1985, the ore-prospecting of Lamasu copper deposit has been carried out for more than ten years. A great deal of geological work has been put in successively, abundant geological data have been accumulated, and more geological achievements have been obtained. The prospect of ore deposit with medium scale or above has been preliminarily determined, because the type of ore deposit in the study area is not clear yet. The heavy coverage of the Quaternary and the insufficient analysis and summary of the metallogenic background, ore-forming conditions, ore-controlling factors and so on in the early stage of geological work, resulting in the early work results can not effectively guide the development of the follow-up geological work. The geological work lacks continuity, the work arrangement is inconsistent or inconsistent. In recent years, although a lot of manpower, material and financial resources have been put into the prospecting work outside the mining area, there is no great breakthrough. It is still in the stage of prospecting and exploration. Therefore, to realize the breakthrough of ore prospecting in the periphery of mining area, to find out the potential of mineral resources in this area, to provide decision basis for the exploitation of mineral resources in this area, and to change the bad natural and geographical conditions in this area. The economic outlook of the poor and backward areas and the revitalization of the economy have important strategic significance. Based on the study of similar types of deposits at home and abroad, this paper collects the geophysical and chemical data of predecessors in the study area. This paper summarizes and analyzes all kinds of ore-prospecting markers, combines with the understanding of field work and the comparison and reference to the achievements made by predecessors in mining areas, and carries out geophysical and geochemical exploration, interpretation and analysis as well as the evaluation of prospecting potential on the periphery of the mining areas. Through geophysical and geochemical exploration anomaly work, combined with comprehensive analysis of geological anomaly characteristics, finally through geological drilling verification work. It is preliminarily inferred that the periphery (NW direction of Lamasu copper deposit) has a certain prospecting space for concealed porphyry copper (lead-zinc-silver) deposits. Based on geochemical background and multivariate statistical analysis, a study area of CuPb-Pb is proposed. Zn, Ag and other elements have a certain prospecting prospects, especially Cu element anomaly large scale, high intensity and geochemical prospecting primary halo anomaly and induced electric anomaly is in good agreement, it is considered that the ore prospecting potential of the Oesu ore area is great. It is necessary to expand the scope of research and carry out further research.
【學(xué)位授予單位】：新疆大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.2;P631;P632

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