本文選題：銅礦床 + 礦床地質(zhì)　； 參考：《昆明理工大學》2015年碩士論文

【摘要】：云南省金平縣白樂寨銅礦區(qū),大地構造上位于揚子準地臺與唐古拉—昌都—蘭坪—思茅褶皺系兩個一級構造單元的接觸地帶,緊鄰哀牢山—藤條河大斷裂西南側,是哀牢山多金屬成礦帶南段藤條河多金屬礦集區(qū)北西緣的一部分。受區(qū)域構造活動影響,哀牢山—藤條河地區(qū)經(jīng)歷了多期次的構造一巖漿活動,礦區(qū)變形活動強烈,而斷裂構造是其最主要的表現(xiàn)形式,控制著區(qū)內(nèi)礦體的產(chǎn)出與分布。本文在綜合分析區(qū)域成礦地質(zhì)背景、成礦地質(zhì)條件的基礎上,對區(qū)內(nèi)不同等級、不同方向的斷裂構造進行系統(tǒng)的歸納,初步總結了礦區(qū)的構造控礦特征,并結合對物化探等異常信息的綜合分析,圈定了找礦靶區(qū)。論文主要取得了以下幾個方面認識：(1)研究區(qū)銅礦體呈脈狀、似層狀賦存于斷裂帶內(nèi)及旁側裂隙中,其產(chǎn)出受地層(T3g1)、巖性(灰?guī)r與砂質(zhì)板巖的接觸部位)、構造(NW及NNW向斷層)、圍巖蝕變(黃鐵礦化、硅化、碳酸鹽化等)、巖漿熱液活動等多種因素控制,而構造是其中最主要的控礦因素(2)研究區(qū)的北西向斷層與其上盤的次級北北西向斷層組成“入”字型控礦構造型式,北西向斷裂作為導礦構造,而其上盤的分支斷裂作為容礦構造嚴格控制區(qū)內(nèi)礦體的產(chǎn)出與分布。(3)結合礦體產(chǎn)出的空間賦存形態(tài)、控礦斷裂構造特征和礦石礦物組合特征、圍巖蝕變特征綜合分析,認為該礦床成因為熱液型銅礦床。(4)以研究區(qū)礦床地質(zhì)特征及斷裂構造控礦特征為基礎,結合物、化探異常的分析結果及其他找礦標志,圈定2個找礦靶區(qū)。
[Abstract]:The Bailezhai copper deposit in Jinping County, Yunnan Province, is located in the contact zone between the Yangzi quasi platform and the two first-order tectonic units of the Tanggura-Changdu-Lanping-Simao fold system, adjacent to the southwest side of the Ailaoshan-Fujiahe large fault. It is a part of the northern western margin of the Fujiahe polymetallic ore concentration area in the southern section of the Ailaoshan polymetallic metallogenic belt. Influenced by the regional tectonic activities, the Ailaoshan-Fujiahe area experienced many periods of tectonic-magmatic activity, and the deformation of the mining area was strong, while the fault structure was the most important form, which controlled the production and distribution of orebodies in the area. Based on the comprehensive analysis of the regional metallogenic geological background and the metallogenic geological conditions, this paper systematically induces the fault structures of different grades and directions in the area, and preliminarily summarizes the structural ore-controlling characteristics of the mining areas. Combined with the comprehensive analysis of geophysical and geochemical anomaly information, the prospecting target area is delineated. In this paper, we have obtained the following understanding: the copper body in the study area is veined and stratiform, which occurs in the fault zone and in the lateral fissure. Its occurrence is controlled by various factors, such as formation T3g1, lithology (contact site between limestone and sandy slate, tectonic NW and NNW faults, wall rock alteration (pyrite, silicification, carbonization, etc.), magmatic hydrothermal activity, etc. The NW trending fault and the secondary NNW fault in its upper face form the "entering" type ore-controlling structure, and the NW-trending fault is used as the ore-conducting structure, and the structure is the most important ore-controlling factor in the study area. The branch faults in the upper face, as the production and distribution of orebodies in the strictly controlled area of ore-bearing structure, are combined with the spatial occurrence form of orebody production, the structural characteristics of ore-controlling faults, the characteristics of mineral assemblage and the alteration characteristics of surrounding rock. It is considered that the deposit is based on the geological characteristics of ore deposits and the ore-controlling characteristics of fault structures in the study area, and the analysis results of geochemical anomalies and other ore-prospecting indicators are the basis of the deposit formation. 2 ore-prospecting target areas are delineated.
【學位授予單位】：昆明理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P618.41

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