發(fā)布時間：2018-05-01 15:32

  本文選題：水系沉積物 + 成礦遠(yuǎn)景��； 參考：《成都理工大學(xué)》2015年碩士論文

【摘要】：工作區(qū)地處西南三江成礦帶南段,屬特提斯構(gòu)造帶的一部份,位于蘭坪—思茅陸塊與揚子陸塊結(jié)合帶。構(gòu)造發(fā)育,巖漿活動頻繁,礦化蝕變較強,成礦地質(zhì)條件有利。研究區(qū)位于我國西部山區(qū)的云南南澗地區(qū),資源豐富、金屬成礦條件優(yōu)越,主要成礦帶基礎(chǔ)地質(zhì)調(diào)查與礦產(chǎn)勘查工作程度低,找礦潛力巨大。隨著國家“西部大開發(fā)”和國務(wù)院“加強地質(zhì)工作的決定”戰(zhàn)略的實施,蘊藏著豐富礦產(chǎn)資源的云南地區(qū)已受到地質(zhì)界的廣泛關(guān)注。應(yīng)用科學(xué)有效的化探數(shù)據(jù)處理方法來提取化探異常信息,在現(xiàn)代成礦預(yù)測理論的指導(dǎo)下,以GIS技術(shù)平臺為支撐,通過集成地質(zhì)、水系沉積物地球化學(xué)特征的研究等技術(shù)手段來快速準(zhǔn)確地篩選評價化探找礦信息,并進行綜合信息找礦預(yù)測,顯然對該區(qū)的找礦勘查迅速取得突破、降低找礦風(fēng)險具有十分重要的意義。工作區(qū)出露的地層有上三疊統(tǒng)麥初箐組;下侏羅統(tǒng)漾江組;中侏羅統(tǒng)花開左組,上侏羅統(tǒng)壩注路組;下白堊統(tǒng)景星組,上白堊統(tǒng)南新組;新近系三營組以及第四系全新統(tǒng)。本區(qū)斷裂構(gòu)造較為發(fā)育,主要以走向北西-南東向和北東-南西向為主,其中早期主要是北西-南東向斷裂,晚期主要是北東-南西向斷裂,斷層主要為逆斷層,傾向北東,傾角為26°-88°不等。測區(qū)巖漿巖分布較為集中,面積不大,但巖類簡單;巖體分布于盟鋪馬村幅北部,構(gòu)造位置正處于蘭坪盆地“中央隆起帶”,呈斑巖群產(chǎn)出,總體呈北西西向展布;總出露面積約為20km2。本次工作以1:5萬水系沉積物為主,對Ag、As、Au、Be、Bi、Cd、Cu、Fe、Hg、La、Li、Mn、Mo、Pb、Sb、Sn、Ti、W、Y、Zn、Zr等21個元素進行了分析,共圈定單元素異常304處,其中Ag異常22處,As異常6處,Au異常18處,Be異常4處,Bi異常12處,Cd異常25處,Cu異常29處,Fe異常4處,Hg異常21處,La異常6處,Li異常11處,Mn異常31處,Mo異常24處,Pb異常19處,Sb異常9處,Sn異常2處,Ti異常4處,W異常7處,Y異常18處,Zn異常12處,Zr異常21處。并對HS01和HS03異常進行解釋和評價。在對成礦元素的分布特征、相關(guān)性分析、R聚類分析的基礎(chǔ)上,結(jié)合成礦地質(zhì)條件、異常查證結(jié)果以及已有礦(化)點信息,作者認(rèn)為工作區(qū)具尋找銅、鉛、鋅、銀、金、錫、鐵礦為主的多金屬礦床或礦體的潛力。本文從水系沉積物地球化學(xué)特征入手,探討了元素分布、分配特征,研究了元素R型聚類及相關(guān)性分析,分析了多元素組合特征,結(jié)合區(qū)域地質(zhì)成礦背景及異常查證結(jié)果等進行了推斷解譯,對成礦進行預(yù)測。研究成果對指導(dǎo)該地區(qū)找礦具有重要的理論與實際意義。
[Abstract]:The working area is located in the southern section of the Sanjiang metallogenic belt in southwest China, which is a part of the Tethys tectonic belt and is located in the combination zone of the Lanping-Simao block and the Yangtze block. Tectonic development, frequent magmatic activity, strong mineralization and alteration, favorable geological conditions for mineralization. The study area is located in the Nanjian area of Yunnan Province in the western mountainous area of China. It is rich in resources and favorable for metallogenic conditions. The basic geological investigation and mineral exploration work of the main metallogenic belt is low and the prospecting potential is great. With the implementation of the strategy of "the great development of the western region" and the "decision to strengthen geological work" of the State Council, Yunnan, which is rich in mineral resources, has been widely concerned by the geological circles. Applying scientific and effective geochemical exploration data processing method to extract geochemical anomaly information, under the guidance of modern metallogenic prediction theory, supported by GIS technology platform, through the integration of geology, The study of geochemical characteristics of water system sediments and other technical means to quickly and accurately screen and evaluate geochemical prospecting information, and to carry out comprehensive information prospecting and prediction, it is obvious that the prospecting and exploration in this area has made a rapid breakthrough. It is very important to reduce the risk of prospecting. The strata exposed in the working area are the upper Triassic Maichuuqing formation, the Lower Jurassic Yangjiang formation, the Middle Jurassic Huazuo formation, the Upper Jurassic Bazuo formation, the Lower Cretaceous Tongjingxing formation, the Upper Cretaceous South New formation, the Neogene Sanying formation and the Quaternary New Series. The fault structures in this area are relatively developed, mainly in the NW-SE and NE-SE directions, in which the early faults are mainly NW-SE trending faults, the late faults are mainly NE-NW trending faults, the faults are mainly reverse faults and tend to be NNE. The inclination angle ranged from 26 擄to 88 擄. The magmatic rocks are distributed in the north of the Mupumacun massif, and are located in the "central uplift zone" of Lanping basin. The magmatic rocks are distributed in porphyry group and distributed generally in the NW direction. The total exposed area is about 20km2. In this work, 21 elements, such as 1: 50, 000 water system sediments, such as Ag-Asae, Astragalus, Beabe, CDB, CuPe, Fehg, LaLiMnMUN, PbSb, SbSN, TiWN, YZN, Zn-Zn-Zr, and so on, have been analyzed. 304 anomalous elements have been ordered in a common circle, and the results are as follows: (1) in this paper, There are 22 Ag anomalies, 6 as anomalies, 6 Bu anomalies, 18 be anomalies, 4 Bi anomalies, 12 CD anomalies, 25 Cu anomalies, 29 Cu anomalies, 4 HG anomalies, 21 La anomalies, 6 Li anomalies, 11 mn anomalies, 31 Mo anomalies, 24 Pb-Pb anomalies. 19 Sb anomalies 9 sn anomalies 2 Ti anomalies 4 W anomalies 7 Y anomalies 18 Zn anomalies 12 Zirconium anomalies 21 anomalies. HS01 and HS03 anomalies were interpreted and evaluated. On the basis of the distribution characteristics of metallogenic elements and correlation analysis / cluster analysis, combined with the metallogenic geological conditions, the results of abnormal verification and the information of existing ore (chemical) points, the authors think that the working area is suitable for searching for copper, lead, zinc, silver, gold, tin, etc. The potential of a polymetallic deposit or orebody dominated by iron ore. Based on the geochemical characteristics of river sediments, this paper discusses the distribution and distribution of elements, studies the cluster of elements R-type and their correlation analysis, and analyses the characteristics of multi-element assemblages. Combined with the regional geological metallogenic background and the results of abnormal verification and interpretation, the metallogenic prediction was carried out. The research results have important theoretical and practical significance for guiding the prospecting in this area.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P632;P612

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