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本科畢業(yè)論文_個(gè)舊東西礦區(qū)成礦規(guī)律對比分析(已修改)

2024-10-23 23:38 本頁面
 

【正文】 分類號 密級 中國地質(zhì)大學(xué)(北京) 本 科 畢 業(yè) 論 文 題 目 個(gè)舊東西礦區(qū)成礦規(guī)律對比分析 英文題目 Metallogenic regularity of parative analysis in Gejiu westeast mining area 學(xué)生姓名 徐章輝 院 (系) 地球科學(xué)與資源學(xué)院 專 業(yè) 資源勘查工程 (固體礦產(chǎn) ) 學(xué) 號 1001103320 指導(dǎo)教師 王功文 職 稱 副教授 2020 年 5 月 摘 要 個(gè)舊錫銅多金屬礦區(qū)被個(gè)舊斷裂分為 東區(qū)和西區(qū),東區(qū)錫多金屬礦開采程度高,礦田分布多;西區(qū)多年來僅發(fā)現(xiàn)一些中小型錫銅礦床,多年來,在個(gè)舊錫礦研究工作多注重于花崗巖成礦理論,個(gè)舊錫銅多金屬礦床主要受燕山中晚期花崗巖及其有關(guān)構(gòu)造控制,成礦時(shí)間集中。近幾年來,隨著礦區(qū)內(nèi)越來越多地開采深部硫化物型礦床,表明個(gè)舊錫銅多金屬礦床的成因是復(fù)雜的,用單一礦源和簡單的花崗巖成因觀點(diǎn)不足以對其進(jìn)行合理地解釋。 本文在前人研究成果的基礎(chǔ)上,結(jié)合實(shí)地調(diào)研以及資料收集進(jìn)行了區(qū)域和礦區(qū)地質(zhì)背景分析,安尼期玄武巖猶如一個(gè)巨大的礦源層,為成礦過程提供了重要的成礦物質(zhì),燕山期 花崗巖侵入活動(dòng)帶來的熱力和熱液作用下,使這些礦質(zhì)得到萃取活化并遷移到一定部位成礦。 通過對東西礦區(qū)地層、構(gòu)造、巖漿巖侵位特征進(jìn)行對比分析,對比東西區(qū)成礦規(guī)律,個(gè)舊東區(qū)的礦床地質(zhì)研究程度較高,結(jié)合東西礦床地質(zhì)研究成果,分析西區(qū)的礦床地質(zhì)特點(diǎn)與成礦規(guī)律,為西區(qū)找礦提供依據(jù)。 關(guān)鍵詞 :玄武巖; 花崗巖; 錫銅多金屬礦床; 成礦模式 ABSTRACT Gejiu tin copper polymetallic deposit is an old fracture is divided into eastern and Western, The degree of multi metal ore mining district of tin, Field distribution。 West over the years only to find some small tin copper deposit, over the years。 for years, In Gejiu Tin research work focused on granite metallogenic theory, Gejiu tin copper polymetallic deposit is mainly controlled by the late Yanshan granite and its related structure, Concentrated mineralization time. In recent years, With more and more deep sulfide mining within the mining area to deposit, That causes the Gejiu tin copper polymetallic deposit is plex, With a single source and simple granite genesis is not enough to carry on the reasonable explanation. In this paper, on the basis of previous research results, Based on the investigation and data collection of the region and the geological background analysis, Anisian basalt is like a giant ore source layer, Provide the oreforming material is an important metallogenic process, The thermal and hydrothermal action Yanshan period granite intrusive activities bring down, The mineral was activated and migrate to a certain part of mineralization. Through paring and analyzing the formation, magmatite, something tectonic emplacement characteristics, Metallogenic regularity things District parison, The east area of Gejiu ore deposit geology research higher degree, Combined with the geological research results. Analysis of the geological characteristics of ore deposits and metallogenic regularity of the West, To provide the basis for Western Exploration. Key words: basalt。 granite。 Tin copper polymetallic deposit。 Metallogenic model 目 錄 1 緒論 ........................................................................ 1 個(gè)舊地區(qū)地理概況 ......................................................... 1 選題依據(jù)及意義 ........................................................... 1 研究區(qū)研究現(xiàn)狀 ........................................................... 2 論文研究工作概況 ......................................................... 2 2 研究區(qū)地質(zhì)概況 .............................................................. 3 大地構(gòu)造背景 ............................................................. 3 區(qū)域地層 ................................................................. 3 區(qū)域構(gòu)造 ................................................................. 4 區(qū)域礦產(chǎn) ................................................................. 5 3 礦區(qū) 地質(zhì)特征 ................................................................ 6 礦區(qū)地層 ................................................................. 6 個(gè)舊東區(qū)地層 ......................................................... 6 個(gè)舊西區(qū)地層 ......................................................... 7 礦區(qū)構(gòu)造 ................................................................. 8 個(gè)舊東區(qū)構(gòu)造 ......................................................... 8 個(gè)舊西區(qū)構(gòu)造 ......................................................... 8 區(qū)域巖漿巖 ............................................................... 9 個(gè)舊東區(qū)巖漿巖 ...................................................... 10 個(gè)舊西區(qū)巖漿巖 ...................................................... 11 4 礦床地質(zhì)特征 ............................................................... 13 礦床成礦系列 ............................................................ 13 印支期海底基 性火山 噴流 CuAu( Sn)成礦系列 ......................... 13 印支期海底噴流 沉積 SnPb(Ag)成礦系列 ............................... 14 燕山晚期花崗巖疊加改造 SnCuPb(Zn、 Ag)成礦系列 .................... 15 成礦物質(zhì)來源及成礦機(jī) 理 .................................................. 15 錫的物質(zhì)來源和成礦機(jī)理 .............................................. 15 鉛的物質(zhì)來源和成礦機(jī)理 .............................................. 16 圍巖蝕變類型 ............................................................ 16 老廠礦田地質(zhì)特征 ........................................................ 17 5 礦床地球化學(xué)特征 ........................................................... 21 個(gè)舊東西礦區(qū)地層含礦性對比 .............................................. 21 巖石地球化學(xué)特征 ........................................................ 22 稀土元素特征 ............................................................ 22 同位素特征 ............................................................ 24 東西礦區(qū)化探異常對比 .................................................. 24 6 礦床成因及成礦模式 ......................................................... 25 礦床成因探討 ............................................................ 25 熱水沉積成礦 ........................................................ 25 巖漿熱液成礦 ........................................................ 25 礦床成因 ............................................................ 26 控礦模式 ...............
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