本文選題：李家坳鉛鋅礦床　切入點：大廠礦田　出處：《昆明理工大學》2015年碩士論文　論文類型：學位論文

【摘要】：研究區(qū)位于丹池成礦帶的中段,靠近大廠礦田東北部邊緣。研究區(qū)勘查工作程度還不夠充分,需結合前人研究成果,進行土壤地球化學測量工作；研究指示元素的土壤地球化學異常特征,結合研究區(qū)地質特征并進行異常的合理解釋與評價,圈定找礦遠景區(qū),縮小找礦范圍。本文分析了研究區(qū)土壤13種元素的基本統(tǒng)計特征。Au、Ag、Cu、Pb、Hg、Bi、Sn、Zn、 As、Sb元素次生富集傾向明顯；Ag、As、Sb、Cd、Mo元素在土壤中分布極不均勻,呈現(xiàn)強分異特征；這是成礦關系密切的地球化學條件。通過迭代法計算出13種元素的異常下限并繪制單元素異常圖；可以看出,各元素異常濃度分帶不均勻,異常規(guī)模差異大。其中Sn、Mo、As、Bi元素異常個數(shù)較多,Ag、Pb、Sn、 Mo、As、Sb元素異常達到三級濃度分帶,Pb、Sn、Mo、Bi元素異常規(guī)模較大,Ag、Cu、Pb、 Zn、Sn、W、As、Sb、Bi元素次生暈套合較好。運用SPSS軟件中的多元統(tǒng)計分析,研究元素的共生組合特征,最終得到綜合元素異常圖,為圈定找礦遠景區(qū)提供了主要依據(jù)。通過相關分析表明：Pb、Zn、Sn、Bi、Sb、Cd、Ag相關性顯著。通過聚類分析表明：Pb、Ag、Zn、Cd、Sb、Bi、Sn、As是一類中-低溫元素組合,也是主要成礦元素在表生環(huán)境下的次生富集組合。通過因子分析表明：F1因子(Zn-Cd-Bi-Sb)是研究區(qū)最重要的次生富集元素組合；F2因子(Pb-Ag)為研究區(qū)次要的次生富集元素組合。比對相關分析、聚類分析及因子分析結果,研究區(qū)具有兩種重要的元素組合類型,即Zn-Cd-Bi-Sb是研究區(qū)最為重要的成礦元素組合,Pb-Ag是研究區(qū)較為次要的成礦元素組合。對研究區(qū)的控礦構造進行解析,發(fā)現(xiàn)研究區(qū)的應力集中區(qū)主要分布在斷層兩側及尖端,同時褶皺核部也存在應力集中區(qū)；褶皺核部和斷層附近具備較好的裂隙發(fā)育條件。良好的裂隙發(fā)育條件是一個非常重要的找礦標志通過探討研究區(qū)“噴流熱水沉積+后期熱液改造”的礦床成因,據(jù)研究區(qū)成礦有利因素分析,結合礦化體產出情況、探礦工程控制情況,研究區(qū)共圈出四個找礦遠景區(qū),其中一級遠景區(qū)A1、A2、A3,二級遠景區(qū)B1。其中A1、A3是下一步重點找礦區(qū)域。
[Abstract]:The middle section of Yu Dan pool metallogenic belt is near the northeast edge of Dachang Orefield. The degree of exploration in the study area is not enough, so it is necessary to carry out soil geochemistry survey combined with previous research results. This paper studies the characteristics of soil geochemical anomalies of indicator elements, combines the geological characteristics of the study area and makes rational interpretation and evaluation of the anomalies, and delineates the prospecting areas. In this paper, the basic statistical characteristics of 13 elements in the soil of the study area. The basic statistical characteristics of 13 elements in the soil. This is a geochemical condition closely related to mineralization. By iterative method, the anomalous lower limit of 13 elements is calculated and the anomalous map of single element is drawn. It can be seen that the anomalous concentration of each element is not uniform. There is a great difference in the scale of anomalies, among which the number of anomalies in the elements of Sno, Mo-Mo-As-Bi is more than that of Ag-Pb-PbPb, and the anomaly of Mo-As-Sb reaches the third-order concentration zonation. The scale of the anomalies is larger than that of Ag-Cu-Pb, and the SPSS software is used for the multivariate statistical analysis of the secondary halos of the elements, and the results are as follows: (1) in this paper, the results are as follows: 1. By studying the symbiotic assemblage characteristics of the elements, the Synthetical element anomaly map is obtained, which provides the main basis for the delineation of the ore-prospecting distant areas. The correlation analysis shows that there is a significant correlation between the SbCU and the SbSbSbCCDO Ag. By cluster analysis, it is shown that the component of the SbSbSbSbSbSbSbSbSbONAs is a kind of middle-low temperature element assemblage. It is also the secondary enrichment assemblage of the main ore-forming elements in the supergene environment. The factor analysis shows that Zn-Cd-Bi-Sb) is the most important secondary enrichment element assemblage in the study area, and that F _ 2 factor Pb-Agis the secondary secondary enrichment element assemblage in the study area. The results of cluster analysis and factor analysis show that there are two important types of element assemblages in the study area, namely, Zn-Cd-Bi-Sb is the most important assemblage of metallogenic elements in the study area, Pb-Ag is the less important combination of metallogenic elements in the study area, and the ore-controlling structure in the study area is analyzed. It is found that the stress concentration zone in the study area is mainly located on both sides of the fault and the tip of the fault, and there is also a stress concentration zone in the core of the fold. There are good fracture development conditions in the core of fold and near faults. Good fracture development condition is a very important ore prospecting marker. By discussing the genesis of "hydrothermal reformation in the late stage of exhalation hot water deposition" in the study area, According to the analysis of metallogenic favorable factors in the study area, combined with the orebody production and the control of prospecting engineering, four ore prospecting areas have been formed in the study area, among which A _ 1, A _ 2, A _ (3) and B _ (1), A _ (1) A _ (3) are the next important prospecting areas.
【學位授予單位】：昆明理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P618.4

【參考文獻】

相關期刊論文 前7條

1 熊超;葛良全;羅耀耀;谷懿;;多種確定地球化學異常下限方法的比較[J];四川有色金屬;2012年01期

2 黎彤,張西繁;華北花崗巖類的大地構造巖石化學特征[J];大地構造與成礦學;1992年04期

3 吳詒;廣西泥盆系火山巖及其分布特征[J];廣西地質;1991年04期

4 葉緒孫，，潘其云;廣西南丹大廠錫多金屬礦田發(fā)現(xiàn)史[J];廣西地質;1994年01期

5 董毅;;因子分析在水系沉積物測量地球化學分區(qū)中的應用探討——以青海都蘭地區(qū)為例[J];礦產與地質;2008年01期

6 張彥艷;王建新;趙志;尹占軍;謝海東;臧興運;;R型聚類分析在成礦階段劃分中的應用——以樺甸大廟子—菜搶子金礦區(qū)為例[J];世界地質;2006年01期

7 李湘凌;張穎慧;李曉輝;袁峰;周濤發(fā);張鑫;范裕;;分形方法確定土壤中重金屬異常下限——以合肥大興地區(qū)Cu元素為例[J];土壤通報;2009年02期

相關博士學位論文 前1條

1 安國英;危機礦山找礦的地球化學方法技術研究[D];中國地質大學（北京）;2006年

相關碩士學位論文 前5條

1 夏既勝;廣西大廠細脈帶礦體數(shù)字化及成礦預測研究[D];昆明理工大學;2002年

2 鄧金燦;廣西大廠100號礦體礦床模型與礦山生產動態(tài)管理研究[D];昆明理工大學;2002年

3 陳玉香;GIS技術—分形方法在化探數(shù)據(jù)處理中的應用探討[D];中國地質大學（北京）;2006年

4 黃艷麗;廣西大廠高峰錫礦三維數(shù)字化礦山信息系統(tǒng)的建立及應用研究[D];昆明理工大學;2008年

5 胡志軍;廣西大廠銅坑（長坡）錫礦外圍礦床地質特征及找礦預測[D];昆明理工大學;2008年

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