發(fā)布時間：2018-02-02 12:01

  本文關(guān)鍵詞： 達(dá)來敖包銅鉬礦 熱液型礦床 構(gòu)造控礦 礦床模型　出處：《中國地質(zhì)大學(xué)(北京)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：本文以達(dá)來敖包銅鉬礦研究區(qū)礦體的控礦構(gòu)造特征為研究對象,詳細(xì)論述了研究區(qū)的構(gòu)造基本格局、控礦構(gòu)造特征和深部找礦等問題,提出了研究區(qū)的構(gòu)造控礦模型,同時對研究區(qū)的成礦物質(zhì)來源和找礦標(biāo)志也進(jìn)行了總結(jié)和歸納。研究區(qū)以往地質(zhì)找礦方法均是對地表出露的石英脈型金鉛鋅礦體進(jìn)行淺部的控制和揭露,對深部潛在的銅鉬斑巖型礦體認(rèn)識和研究不足,勘查找礦效率較低。本次論文研究工作借助前期取得的地質(zhì)資料,通過野外調(diào)研工作,對深部斑巖體構(gòu)造控礦特征及模式進(jìn)行初步研究和討論以期為該區(qū)今后的深部找礦工作提出一種行之有效的找礦模式及方法。論文以地質(zhì)測量新方法等現(xiàn)代找礦理論為指導(dǎo)思想,通過野外調(diào)研工作,進(jìn)行了研究區(qū)淺部礦體的控礦構(gòu)造特征及深部隱伏礦體構(gòu)造控礦模式的分析,主要取得如下認(rèn)識及成果:北東向、南北向斷裂是研究區(qū)內(nèi)主要的控礦斷裂,正是由于斷裂裂隙的發(fā)育規(guī)模、斷裂構(gòu)造的內(nèi)部結(jié)構(gòu)、含礦熱液的性質(zhì)以及運移條件等方面的差異,導(dǎo)致了礦化分布的不均勻性,出現(xiàn)了礦化分段富集現(xiàn)象。充填在北東向、南北向斷裂中的褐鐵礦化石英脈是直接的找礦標(biāo)志。通過研究認(rèn)為達(dá)來敖包礦床具有典型的斑巖型礦床礦化特征,研究區(qū)礦化體呈現(xiàn)較為復(fù)雜的上下兩種礦化形態(tài),淺部礦體受斷裂構(gòu)造控礦特征明顯,深部斷裂構(gòu)造控制細(xì)粒二長花崗巖的產(chǎn)出,為成礦斑巖體,也是成礦母巖。研究認(rèn)為,對銅鉬斑巖型礦體的勘查工作,實質(zhì)上是對研究區(qū)內(nèi)進(jìn)行深部找礦問題的提出,深信結(jié)合物探異常及構(gòu)造控礦、礦床模型的論述分析,在礦(化)體膨大部位、交匯部位開展深部找礦是值得探索的找礦途徑。研究這一地區(qū)的控礦構(gòu)造特征及構(gòu)造控礦模式對于該區(qū)地質(zhì)找礦工作具有重要指導(dǎo)意義,論文提出的控礦模式及認(rèn)識和成果對于鄰區(qū)地質(zhì)勘查工作同樣具有一定參考價值。
[Abstract]:In this paper, the ore-controlling structure characteristics of orebody in the study area of Dalaiaobao copper-molybdenum deposit are taken as the research object, and the structural basic pattern, ore-controlling structural characteristics and deep ore-prospecting in the study area are discussed in detail. A structural ore-controlling model for the study area is proposed. At the same time, the source of ore-forming materials and the ore-prospecting markers in the study area are summarized and summarized. The previous geological prospecting methods in the study area are shallow control and exposure of the quartz vein type gold, lead-zinc orebodies exposed on the surface. The deep potential copper-molybdenum porphyry orebodies are not well understood and studied, and the exploration and prospecting efficiency is relatively low. In this paper, with the help of the geological data obtained in the previous period, the field investigation work is carried out. This paper makes a preliminary study and discussion on the structural ore-controlling characteristics and models of deep porphyry in order to put forward an effective prospecting model and method for the future deep prospecting in this area. Theory is the guiding ideology. Through field investigation, the ore-controlling structure characteristics of shallow orebody and the ore-controlling model of deep concealed orebody are analyzed. The main results are as follows: NNE. The north-south fault is the main ore-controlling fault in the study area. It is due to the development scale of the fracture, the internal structure of the fault structure, the properties of ore-bearing hydrothermal solution and the migration conditions and so on. It leads to the inhomogeneity of mineralization distribution and the phenomenon of mineralization enrichment. The fossil Yingmai of limonite in the south-north fault is a direct ore prospecting marker. It is considered that the Dalaiaobo deposit has typical porphyry mineralization characteristics. The orebodies in the study area show two complex mineralization patterns, the shallow orebodies are obviously controlled by fault structure, and the deep fault structures control the occurrence of fine-grained monzonitic granites, which are ore-forming porphyry bodies. It is believed that the exploration of copper-molybdenum porphyry orebodies is in essence a matter of deep prospecting in the study area, and it is believed to combine geophysical anomalies with structural ore-control. The ore deposit model is discussed and analyzed in the expanding position of the ore body. It is worth exploring the deep prospecting way in the intersection position. It is important to study the ore-controlling structure characteristics and structural ore-controlling model for the geological prospecting work in this area. The ore-controlling model proposed in this paper has some reference value for the geological exploration in adjacent areas.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.41;P618.65

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