本文選題：隱伏斷裂 + 音頻大地電磁測深法��； 參考：《新疆大學(xué)》2015年碩士論文

【摘要】：新疆和布克賽爾縣伊克托里布拉格金礦位于西準(zhǔn)噶爾雪米斯坦背斜南翼西南端,構(gòu)造位置上處在準(zhǔn)噶爾板塊北緣古生代陸緣活動帶內(nèi)晚古生代成熟島弧之上。伊克托里布拉格金礦西部存在典型的破碎蝕變巖型金礦-哈爾曼金礦,二者處于同一成礦帶。伊克托里布拉格金礦也為破碎蝕變巖型金礦,該類型金礦床主要受火山機構(gòu)和斷裂構(gòu)造相控制。破碎蝕變巖型金礦床的空間產(chǎn)出受區(qū)域深大斷裂或區(qū)內(nèi)隱伏斷裂控制。斷裂對該類型礦床的空間位置控制更加明顯,一般該類型礦床產(chǎn)出在斷裂帶附近。因此,對該類型礦床內(nèi)斷裂構(gòu)造進行研究有利于確定斷裂構(gòu)造在成礦中的作用。本文研究區(qū)第四系地層覆蓋面積大,前人推測其所在1:50000區(qū)域地質(zhì)圖內(nèi)兩條斷裂構(gòu)造穿越該研究區(qū)。斷裂構(gòu)造空間位置及規(guī)模對研究區(qū)內(nèi)金礦床具有重要意義。以往地質(zhì)工作尚未明確厘定斷裂的準(zhǔn)確位置,本次工作的目的就是為了確定斷裂構(gòu)造及其次級斷裂的具體位置及空間展布。在厘定礦區(qū)隱伏斷裂的基礎(chǔ)上,結(jié)合前人資料及具體工作要求,進行物探方法可行性分析,確定具體工作方法(音頻大地電磁測深法),進而分析其對成礦的作用。對測量獲取數(shù)據(jù)進行處理,資料解釋,開展對礦區(qū)內(nèi)隱伏斷裂的圈定工作。采用音頻大地電磁測深法對伊克托里布拉格礦區(qū)隱伏斷裂進行圈定,圈定該礦區(qū)內(nèi)6條規(guī)模較大的斷層:F7、F8、F10、F11、F12、F13,5條規(guī)模較小的斷層:F14、F15、F16、F17、F18。其中F7、F8為區(qū)域性斷裂,F10—F18為F7、F8的次一級斷裂。圈定出斷層F7、F8的準(zhǔn)確位置,為下一步礦區(qū)工作指明方向。金礦區(qū)礦體產(chǎn)在兩條主斷裂交叉處,即F7斷裂(近東西向)與F8斷裂(斷裂東端北東向)交匯位置。F7、F8斷裂,控制金礦體產(chǎn)出空間位置。F8斷裂上發(fā)育的近北西向的次級斷裂F14-F18是主要的容礦、含礦構(gòu)造。
[Abstract]:The Iketoli Bragg gold deposit in Xinjiang and Bukeser County is located at the southwest end of the southern wing of the West Junggar Shemistan anticline, and the tectonic position is above the late Paleozoic mature island arc in the Paleozoic continental margin active belt of the northern margin of the Junggar plate. There is a typical broken altered rock type gold deposit-Harman gold deposit in the west of Iketoli Bragg gold deposit, both of which are located in the same metallogenic belt. The Iketoli Bragg gold deposit is also a broken altered rock type gold deposit, which is mainly controlled by volcanic mechanism and fault tectonic facies. The spatial occurrence of broken altered rock type gold deposits is controlled by regional deep faults or hidden faults. The fault controls the spatial location of this type of deposit more obviously, and generally occurs near the fault zone. Therefore, the study of fault structure in this type of deposit is helpful to determine the role of fault structure in mineralization. The Quaternary strata cover a large area in this study area. It is assumed that two faulted structures in the 1: 50000 regional geological map pass through the study area. The spatial location and scale of fault structures are of great significance to gold deposits in the study area. The purpose of this work is to determine the specific location and spatial distribution of the fault structure and its secondary faults. On the basis of determining hidden faults in mining area, combining with previous data and specific work requirements, the feasibility analysis of geophysical prospecting method is carried out, and the specific working method (Audio magnetotelluric sounding method) is determined, and its effect on mineralization is analyzed. Processing and interpretation of survey data and delineation of hidden faults in mining area are carried out. Audio magnetotelluric sounding method was used to delineate the hidden faults in the Iketoli Bragg mining area, and six larger faults in the area were delineated. There are 5 smaller faults: F14, F15, F16, F17F17, F18, F10, F10, F11, F12, F135. Among them, F _ 7 / F _ 8 is a sub-primary fault of regional fault and F _ (10) F _ (18) is F _ (7) F _ (8). The accurate location of fault F 7 F 8 is delineated, and the direction of further work is pointed out. The orebody in the gold ore area is located at the intersection of two main faults, I. e., the junction of F7 fault (near EW) and F8 fault (NE of the fault end). The secondary fault F14-F18, which controls the spatial position of the gold deposit. F8 fault, is the main ore-bearing and ore-bearing structure.
【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】：P618.51

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本文編號：1955053