本文選題：多元成礦信息融合 + 線—環(huán)結(jié)構(gòu)��； 參考：《昆明理工大學(xué)》2015年碩士論文

【摘要】：云南省瀾滄縣班歪鉛鋅勘查區(qū)地處昌寧—孟連裂谷帶南段,是多種成礦有利構(gòu)造環(huán)境、多種重要成礦地質(zhì)作用疊加和耦合的地區(qū),具備典型的多成礦期、多成礦物質(zhì)來源、多礦床成因類型的成礦條件。本文系統(tǒng)地研究了區(qū)域地質(zhì)背景及礦床地質(zhì)特征,綜合運(yùn)用勘查地球化學(xué)、遙感技術(shù)等方法,提取并分析成礦有利信息,建立多元信息定量預(yù)測(cè)模型,從而完成成礦預(yù)測(cè)和靶區(qū)優(yōu)選。論文主要獲得了以下認(rèn)識(shí)和成果：(1)在區(qū)域成礦地質(zhì)背景與區(qū)域礦產(chǎn)分布特征分析的基礎(chǔ)上,對(duì)勘查區(qū)礦床地質(zhì)特征進(jìn)行研究,總結(jié)礦床成礦規(guī)律與成因規(guī)律。主要控礦構(gòu)造為NNW-SSE斷裂構(gòu)造,礦體多呈透鏡體、脈狀產(chǎn)出,主要礦石礦物為方鉛礦、磁黃鐵礦、黃鐵礦,礦石為角礫狀、脈狀構(gòu)造,硅化和黃鐵礦化,蝕變強(qiáng)烈。根據(jù)類比,勘查區(qū)鉛鋅礦床的礦床成因類型為中低溫?zé)嵋旱V床。(2)開展勘查地球化學(xué)找礦,探討元素遷移與富集規(guī)律,以及元素組合成礦過程。成礦元素Pb的背景值高出地殼豐度值3-7倍,Sb的背景值高出地殼豐度值一個(gè)數(shù)量級(jí),Cu、Zn背景值與地殼豐度接近,10個(gè)元素含量服從于對(duì)數(shù)正態(tài)分布,參照元素異常下限值與元素異常特征劃分了8個(gè)異常區(qū)。(3)基于TM、Aster影像,對(duì)瀾滄縣班歪鉛鋅勘查區(qū)的遙感地質(zhì)信息進(jìn)行了提取,區(qū)內(nèi)線性構(gòu)造較為發(fā)育,發(fā)育有一個(gè)環(huán)形構(gòu)造,色調(diào)異常與鉛鋅礦化具有一定的關(guān)系,線性構(gòu)造、線環(huán)構(gòu)造交匯處是成礦與找礦的有利部位。并且用統(tǒng)計(jì)方法對(duì)勘查區(qū)線性構(gòu)造進(jìn)行了定量的分析。(4)綜合成礦信息定量分析與靶區(qū)優(yōu)選,建立綜合成礦定量模型。依據(jù)地質(zhì)、勘查地球化學(xué)、礦床遙感等成礦信息,提取了與成礦有關(guān)的斷裂構(gòu)造、賦礦地層、線性構(gòu)造等14個(gè)成礦有利信息,建立找礦信息量模型。依據(jù)靶區(qū)級(jí)別劃分原則,將7個(gè)靶區(qū)劃分為1個(gè)Ⅰ級(jí),2個(gè)Ⅱ級(jí)(Ⅱ1、Ⅱ2靶區(qū)),4個(gè)Ⅲ級(jí)(Ⅲ1、Ⅲ2、Ⅲ3、Ⅲ4靶區(qū))。
[Abstract]:Located in the southern segment of Changning-Menglian rift belt in Lancang County, Yunnan Province, Banjiao lead and Zinc Prospecting area is a favorable tectonic environment for metallogenic, superimposed and coupled by many important metallogenic geological processes, with typical polymetallogenic period and multiple metallogenic material sources. Metallogenic conditions of multiple genetic types of ore deposits. In this paper, the regional geological background and geological characteristics of ore deposits are systematically studied. By using the methods of exploration, geochemistry and remote sensing, the favorable information of mineralization is extracted and analyzed, and the quantitative prediction model of multivariate information is established. Thus the metallogenic prediction and target optimization are completed. Based on the analysis of the regional metallogenic geological background and the regional mineral distribution characteristics, the geological characteristics of ore deposits in the exploration area are studied, and the metallogenic and genetic laws of the deposits are summarized. The main ore-controlling structure is NNW-SSE fault structure, the orebody is mostly lenticular and veinlike. The main ore minerals are galena, pyrrhotite, breccia, vein structure, silicification and pyritization, and the alteration is strong. According to analogies, the genetic type of lead-zinc deposits in exploration area is middle-low temperature hydrothermal deposit. (2) Prospecting geochemical prospecting is carried out, and the law of element migration and enrichment, and the metallogenic process of element assemblage are discussed. The background value of Pb is 3-7 times higher than that of crustal abundance. The background value of Cu ~ (2 +) Zn is close to that of crustal abundance by an order of magnitude, and the content of 10 elements is in logarithmic normal distribution. According to the lower limit value of element anomaly and the characteristics of element anomaly, eight anomaly areas are divided into eight anomaly areas. Based on TMU Aster image, the remote sensing geological information of Bananyao lead and zinc exploration area in Lancang County is extracted. The linear structure is relatively developed and a ring structure is developed in the area. The hue anomaly has a certain relationship with the lead-zinc mineralization. The linear structure and the junction of the linear ring structure are the favorable places for mineralization and prospecting. The quantitative analysis of the linear structure in the exploration area is carried out by means of statistical method. The quantitative analysis of the comprehensive ore-forming information and the optimal selection of the target area are carried out, and the quantitative model of the comprehensive metallogenic process is established. Based on the ore-forming information such as geology exploration geochemistry and mineral deposit remote sensing 14 favorable ore-forming information such as fault structure ore-bearing strata and linear structure are extracted and the ore-prospecting information quantity model is established. According to the principle of target classification, seven target regions were divided into 1 鈪，

本文編號(hào)：2019599