本文選題：云南保山 + 成礦地質(zhì)背景��； 參考：《成都理工大學(xué)》2017年碩士論文

【摘要】：云南保山地區(qū)位于岡瓦納大陸大陸與勞亞大陸之間的昌寧 孟連帶上。研究區(qū)出露地層主要有施甸地層小區(qū)、耿馬地層小區(qū)、瀾滄地層小區(qū)三個(gè)小區(qū),從奧陶系至新近系地層皆有出露;巖漿巖以古特提斯構(gòu)造域被動(dòng)陸緣一側(cè)的瀾滄構(gòu)造巖漿帶礦物為代表,其分布明顯受斷裂控制,從巖漿巖類型上看,區(qū)內(nèi)巖漿巖以二疊系、三疊系二長(zhǎng)花崗巖和二疊系閃長(zhǎng)巖為主,次為石英閃長(zhǎng)巖和花崗閃長(zhǎng)巖�；鹕綆r主要出露于保山-鎮(zhèn)康地塊和昌寧-孟連帶內(nèi),總體呈南-北或近南北向的狹長(zhǎng)帶狀展布;研究區(qū)的變質(zhì)巖石類型主要為區(qū)域動(dòng)力熱流和區(qū)域熱流動(dòng)力兩個(gè)大類,變質(zhì)巖出露基巖以變質(zhì)砂巖類、千枚巖類、片巖類為主。區(qū)內(nèi)發(fā)育巖漿巖建造、火山巖建造、變質(zhì)巖建造、碎屑巖建造。已發(fā)現(xiàn)的與巖漿巖建造有關(guān)的礦物有鳳慶幅的輝鉬礦、銅礦、硅石礦等,與變質(zhì)巖建造有關(guān)的礦物有勐統(tǒng)街幅的硫鐵礦、銅礦、鉛鋅礦;與火山巖建造有關(guān)的臥牛寺玄武巖銅礦,與碎屑巖建造有關(guān)的石門坎金礦及鳳慶勐佑河尾村張家煤礦,研究區(qū)礦產(chǎn)的形成與分布均與含礦建造有著密切的關(guān)系。綜合三江地區(qū)的成礦地質(zhì)特點(diǎn),通過(guò)對(duì)研究區(qū)礦產(chǎn)成礦規(guī)律、控礦因素進(jìn)行綜合、歸納、分析、研究,最終總結(jié)出研究區(qū)礦產(chǎn)控礦因素:(1)地層,杞木石門坎金礦及鳳慶勐佑河尾村張家煤礦嚴(yán)格控制于地層層位中;(2)構(gòu)造控礦,控制了含礦建造的形成及其背景,同時(shí)也決定導(dǎo)礦、運(yùn)礦、容礦,鳳慶幅的鉬礦、銅礦、硅石礦、硫鐵礦嚴(yán)格受構(gòu)造控制,礦點(diǎn)發(fā)現(xiàn)位置皆位于構(gòu)造周邊;(3)巖漿巖,巖漿活動(dòng)多為成礦物質(zhì)直接來(lái)源,同時(shí)也為熱液活動(dòng)提供動(dòng)力,鳳慶地區(qū)的發(fā)現(xiàn)了輝鉬礦、硫鐵礦、銅礦礦點(diǎn)充分說(shuō)明了巖漿熱液的作用。最終通過(guò)對(duì)研究區(qū)內(nèi)的成礦地質(zhì)背景、含礦建造、構(gòu)造、成礦因素、控礦因素進(jìn)行綜合分析,總結(jié)研究區(qū)內(nèi)礦產(chǎn)特征,劃定了三個(gè)具有找礦潛力的成礦區(qū):杞木林鉛鋅礦成礦區(qū);字家寨鉬礦成礦區(qū);田頭村銅多金屬礦成礦區(qū)。
[Abstract]:Baoshan area is located in the Changning Menglian belt between Gondwana and Laoya. In the study area, there are three main outcrop strata: Shidian stratigraphic district, Gengma stratigraphic district and Lancang stratigraphic district, which are exposed from Ordovician to Neogene. The magmatic rocks are represented by the minerals in the Lancang tectonic magmatic belt on the passive margin of the PaleoTethys tectonic domain. The distribution of magmatic rocks is obviously controlled by faults. In terms of magmatic rock types, the magmatic rocks in the area are Permian. Triassic Permian granites and Permian diorite are dominant, followed by quartz diorite and granodiorite. The volcanic rocks are mainly exposed in the Baoshan-Zhenkang block and Changning Menglian belt, and are generally distributed in a long, narrow and narrow belt in the south-north direction or near the north-south direction. The metamorphic rock types in the study area are mainly regional dynamic heat flow and regional heat flow dynamics, the main types of metamorphic rocks in the study area are regional dynamic heat flow and regional heat flow dynamics. Metamorphic rocks are mainly composed of metamorphic sandstone, phyllite and schist. Magmatic formation, volcanic formation, metamorphic rock formation, clastic formation. The minerals related to magmatic formation are molybdenum, copper and siliceous ore of Fengqing range, and pyrite, copper and lead-zinc ore related to metamorphic rock formation. The formation and distribution of minerals in the study area are closely related to ore-bearing formations, such as the Huuniusi basalt copper deposit related to volcanic rock formation, the Shimenkan gold deposit related to clastic rock formation and Zhangjia coal mine in Fengqing Mengyou River Weicun. Synthesizing the ore-forming geological characteristics of Sanjiang area, by synthesizing, summing up, analyzing and studying the ore-controlling factors, the ore-controlling factor of ore-controlling in the study area, the ore-controlling factor of the studied area, the ore-controlling factor: 1) is concluded. Qimenqian gold deposit and Zhangjia coal mine in Fengqing Mengyou River Weicun (Zhangjia coal mine) are strictly controlled in the stratigraphic strata, controlling the formation of ore-bearing formations and their background, and also determining the ore-conducting, transporting, containing, and Fengqing molybdenum deposits and copper deposits. Siliceous ores and pyrite are strictly controlled by the structure. The location of the ore sites is located in the adjacent area of the structure. Magmatic activity is mainly from the direct source of ore-forming materials, and it also provides power for hydrothermal activities. Molybdenum and pyrite have been discovered in Fengqing area. The ore spot of copper deposit fully illustrates the action of magmatic hydrothermal solution. Finally, through the comprehensive analysis of metallogenic geological background, ore-bearing formation, structure, ore-forming factors and ore-controlling factors in the study area, the characteristics of mineral resources in the study area are summarized. There are three metallogenic areas with prospecting potential: Qimulin lead-zinc deposit, Zijiazhai molybdenum deposit and Tiantoucun copper-polymetallic ore deposit.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：P612

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本文編號(hào)：2023699