發(fā)布時間：2018-04-14 08:32

  本文選題：紅土溝-紅石山 + 水系沉積物測量��； 參考：《中國地質大學(北京)》2015年碩士論文

【摘要】：東昆侖地區(qū)是秦-祁-昆成礦帶中重要的成礦區(qū)帶之一。格爾木市紅土溝—紅石山一帶通過近年來的綜合勘查,在東昆侖地區(qū)發(fā)現(xiàn)的一批重要的金屬礦產地。在充分收集、分析、總結前人的地質、礦產、物化探、科研等成果資料的基礎上,通過1：5萬水系沉積物及地面高精度磁法測量、地化(巖石)剖面測量及槽探工程驗證,初步認為：元古代萬保溝群、晚古生代泥盆系、加里東期、晚華力西-印支旋回巖漿巖的元素地球化學特征為成礦元素濃集率高,變化范圍大；火山、巖漿攜帶較多的成礦物質是區(qū)內成礦的關鍵；成礦作用與火山巖漿上侵、噴溢活動相伴隨,成礦作用以巖漿作用與疊生成礦為主；成礦元素組合異常主要受近EW向以及NW向斷裂(帶)控制,而新生代形成的斷裂則無多元素異常顯示,僅有Hg和Sb、As等條狀、串珠狀異常分布；元素背景統(tǒng)計和異常查證顯示,研究區(qū)屬區(qū)域重要成礦區(qū)(帶)、可劃分Ⅳ級成礦帶,資源潛力較大,是尋找金、銅、鉛、鋅、鈷、銻等礦床的重要地帶；根據(jù)地質單元含礦性評價和成礦元素異常的分布,綜合地質成礦規(guī)律確定找礦靶區(qū)5個,異常查證工作確認了紅土溝、大格勒溝腦等一批金銅異常確實存在而且具有良好的找礦前景；根據(jù)多元素背景的區(qū)域分布及組合特征進行大地構造及地球化學分區(qū),異常反映昆中與昆南主干斷裂,Fe、Cu、Co、Ni等基性元素的高背景及異常分布反映本區(qū)中基性火山巖地層特征。水系沉積物元素分布特征客觀地展現(xiàn)了區(qū)內元素含量水平以及區(qū)域分布特征,所圈定綜合異常,揭示了不同成因、不同類型異常元素組合特征及元素富集規(guī)律；各類找礦靶區(qū)及成礦遠景區(qū)劃為今后找礦提供了地球化學依據(jù)；采用大面積東西向多幅水系沉積物化探測量、小比例尺異常成圖,可以很好反映區(qū)域地球化學特點和區(qū)域成礦規(guī)律,對解決區(qū)域基礎地質問題和區(qū)域找礦戰(zhàn)略部署具有非常重要的作用；地質、化探、物探相結合的辦法,既發(fā)揮化探快速確定靶區(qū)的優(yōu)點,又利用地質工作可準確定位的長處,再加上適當?shù)乇砉こ探衣?可取的良好的找礦效果。上述研究基礎上,結合區(qū)內已發(fā)現(xiàn)礦床(點)的礦床地質特征,總結了區(qū)域礦床的成礦規(guī)律,建立成礦模式。
[Abstract]:East Kunlun area is one of the important metallogenic belts in Qin-Qi-Kun metallogenic belt.The Hongtugou-Hongshi Mountain area of Geermu City has been discovered in East Kunlun area by comprehensive exploration in recent years.On the basis of collecting, analyzing and summing up the previous achievements in geology, mineral resources, geophysical and chemical exploration, scientific research and so on, through the high precision magnetic survey of sediment and surface of water system of 1: 50, 000, geochemistry (rock) profile survey and trough exploration engineering,The elemental geochemical characteristics of the Proterozoic Wanbaogou Group, the late Paleozoic Devonian, Caledonian and late Varissian-Indosinian magmatic rocks are characterized by a high concentration rate of metallogenic elements and a large range of variation, volcanoes, volcanoes, volcanoes, volcanoes, volcanoes, volcanoes, volcanoes, volcanoes, volcanoes, volcanoes.The ore-forming process is characterized by magmatism and superfluous mineralization, which is accompanied by volcanic magma upwelling and exhalation, and the ore-forming process is dominated by magmatism and superimposed mineralization, and the ore-forming process is characterized by magmatism and superfluous mineralization.The assemblage anomalies of metallogenic elements are mainly controlled by the near EW and NW trending faults (zones), while the faults formed in the Cenozoic show no multielement anomalies, only the bands Hg and SbAs are distributed in series, and the background statistics and anomaly verification of the elements show that,The study area belongs to the important metallogenic area (belt), which can be divided into four grade metallogenic belts, and has great resource potential. It is an important area for prospecting for gold, copper, lead, zinc, cobalt and antimony deposits, and is based on the metallogenic evaluation of geological units and the distribution of metallogenic elements anomaly.Five ore prospecting target areas were determined by comprehensive geological metallogenic law. The abnormal verification work confirmed that some gold and copper anomalies such as laterigou and Daglerou really existed and had a good prospecting prospect.According to the regional distribution and assemblage characteristics of the multi-element background, the geotectonic and geochemical zoning is carried out. The anomalies reflect the high background of the basic elements such as FeanCuCuCo-Ni and the anomalous distribution of the middle-basic volcanic strata in this area.The distribution characteristics of elements in river sediments objectively show the level of element content and regional distribution characteristics, delineate comprehensive anomalies, and reveal the characteristics of element assemblages and enrichment laws of different causes and types of anomalies.All kinds of ore-prospecting target areas and ore-forming prospective zoning provide geochemical basis for ore prospecting in the future, large area east-west river sediment geochemical survey, small scale anomaly mapping,It can well reflect the characteristics of regional geochemistry and the regularity of regional metallogenesis, and play a very important role in solving the regional basic geological problems and the strategic deployment of regional prospecting; the method of combining geology, geochemical exploration and geophysical exploration,The advantages of rapid determination of target area by geochemical exploration and the advantages of accurate location of geological work, combined with proper surface engineering exposure, have good ore prospecting effect.On the basis of the above research, combined with the geological characteristics of the discovered deposits in the region, the metallogenic regularity of the regional deposits is summarized and the metallogenic model is established.
【學位授予單位】：中國地質大學(北京)
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P595;P632

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本文編號：1748481