本文關(guān)鍵詞： 謝米斯臺 西準(zhǔn)噶爾 綜合找礦模型 火山巖型典型礦床 找礦靶區(qū)　出處：《新疆大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：研究區(qū)位于新疆西準(zhǔn)噶爾西北部謝米斯臺島弧帶。晚古生代火山活動時間長,活動強(qiáng)度強(qiáng),分布面廣。因此,該區(qū)火山巖厚度大,巖性復(fù)雜,具有良好的地質(zhì)成礦條件。研究區(qū)內(nèi)礦產(chǎn)資源豐富,尤其是銅鐵金礦。但隨著找礦難度的增大,傳統(tǒng)的找礦手段未能滿足復(fù)雜地質(zhì)條件下找礦的需要,所以進(jìn)行綜合找礦方法具有重要意義。針對研究區(qū)內(nèi)礦產(chǎn)勘查的需要,本文在研究區(qū)范圍內(nèi)選取阿爾木強(qiáng)火山巖型銅礦為典型礦床,綜合運(yùn)用地、物、化、遙等現(xiàn)代勘查技術(shù)和手段,全面系統(tǒng)地研究阿爾木強(qiáng)銅礦各種有利成礦條件,找礦標(biāo)志,在此基礎(chǔ)上建立綜合找礦模型。最后,在綜合找礦模型的基礎(chǔ)上在研究區(qū)內(nèi)圈定找礦靶區(qū)。具體工作與成果如下:(1)通過1∶10000地面高精度磁法面積測量提取了磁異常信息,通過激電極化法提取了地球物理激電異常并做出相關(guān)圖件。(2)利用謝米斯臺地區(qū)1:5萬土壤地球化學(xué)數(shù)據(jù),運(yùn)用T=X+1.5S計算異常下限的參考值并確定Cr、Co、Ni、Cu、As、Ag、Cd、Sb、Au、Hg等元素的異常下限,通過多元統(tǒng)計方法(相關(guān)分析、聚類分析等)研究礦區(qū)內(nèi)各元素的分布富集特征及共生組合規(guī)律,確定地球化學(xué)異常找礦標(biāo)志。然后利用處理好的地球化學(xué)數(shù)據(jù)在surfer軟件上繪出了單元素、組合元素地球化學(xué)異常圖。(3)利用及處理landsat8OIL數(shù)據(jù),通過主成分分析法進(jìn)行礦化蝕變信息提取,獲取了羥基、鐵染蝕變分布圖。通過Landsat-8OLI影像741波段獲得研究區(qū)的合成彩色影像,與其結(jié)合1:1萬礦區(qū)地質(zhì)圖進(jìn)行目視解譯,獲得了典型礦床阿爾木強(qiáng)銅礦的遙感解譯線性環(huán)形構(gòu)造圖。(4)阿爾木強(qiáng)火山巖型銅礦區(qū)域地質(zhì)背景、區(qū)域地球物理場、地球化學(xué)場特征、礦區(qū)地球物理、地球化學(xué)、遙感異常信息特征及礦床地質(zhì)特征、控礦因素及找礦標(biāo)志基礎(chǔ)上建立阿爾木強(qiáng)火山巖型銅礦床綜合找礦模型。(5)據(jù)阿爾木強(qiáng)火山巖型銅礦床綜合找礦模型的基礎(chǔ)上,利用1:5萬地質(zhì)、高精度磁測、土壤地球化學(xué)測量,1:1萬激電剖面、磁剖面以及遙感信息提取等方法圈定一個乙1級異常靶區(qū)(1區(qū)),地表礦化特征與阿爾木強(qiáng)小型銅礦類似,成礦條件較好,是成礦遠(yuǎn)景區(qū)內(nèi)尋找陸相火山巖型銅金礦較好的靶區(qū),具有良好的找礦前景。
[Abstract]:The study area is located in the Shemisi island arc zone in the northwest part of Xinjiang. The late Paleozoic volcanoes were active for a long time, strong activity intensity and wide distribution. Therefore, the volcanic rocks in this area are very thick and complicated in lithology. The study area is rich in mineral resources, especially copper, iron and gold deposits. But with the increasing difficulty of prospecting, the traditional prospecting methods can not meet the needs of prospecting under complex geological conditions. Therefore, it is of great significance to carry out comprehensive prospecting methods. In view of the needs of mineral exploration in the study area, this paper selects Almu-strong volcanic type copper deposit as a typical deposit in the study area. This paper studies comprehensively and systematically all kinds of favorable metallogenic conditions and prospecting markers of Almuqiang Copper Mine by means of remote exploration techniques and methods, and establishes a comprehensive prospecting model on this basis. On the basis of the comprehensive prospecting model, the prospecting target area is delineated in the study area. The concrete work and results are as follows: 1) the magnetic anomaly information is extracted by measuring the surface area of 1: 10000 high precision magnetic method. Geophysical induced anomalies were extracted by the method of induced polarization and related maps were made. (2) based on the geochemistry data of 1: 50 000 soils in the Shemishitai area, the reference values of the lower limit of the anomalies were calculated by using TX 1.5S and the anomalous lower limits of elements such as CrCoCoC NiNiCU, AsAsAsAsCU, CDB, SbHG and so on were determined. By means of multivariate statistical method (correlation analysis, cluster analysis, etc.), the distribution and enrichment characteristics and symbiotic combination law of each element in the mining area are studied. Then the single element and combined element geochemical anomaly map on surfer software are drawn by using the processed geochemical data, and the landsat8OIL data are used and processed. Principal component analysis (PCA) was used to extract the mineralized alteration information, and the distribution of hydroxyl and iron-stained alteration was obtained. The composite color image of the study area was obtained by using Landsat-8OLI image at 741-band, and the visual interpretation was carried out by combining with the geological map of the mining area of 10: 10, 000. The remote sensing interpretation of Almuqiang copper deposit is obtained. The regional geological background, regional geophysical field, geochemical field, geophysics and geochemistry of Almu-strong volcanic type copper deposit are obtained. Based on the characteristics of remote sensing anomaly information and geological characteristics of deposits, ore-controlling factors and ore-prospecting indicators, a comprehensive prospecting model for Almu-strong volcanic copper deposits is established, which is based on the comprehensive prospecting model of Almu-strong volcanic copper deposits. Using 1: 50 000 geology, high precision magnetic survey, soil geochemistry survey 1: 10 000 IP profile, magnetic profile and remote sensing information extraction, etc., delineate a class B 1 anomaly target area. The surface mineralization characteristics are similar to that of Almuqiang small copper deposit. The ore-forming condition is good, and it is a good target area for prospecting continental volcanic rock type copper and gold deposit in the metallogenic area, which has a good prospecting prospect.
【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】：2017
【分類號】：P618.2

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