本文選題：招平斷裂 + 金礦　； 參考：《中國地質(zhì)大學(xué)(北京)》2015年碩士論文

【摘要】：招平斷裂帶是膠西北金礦集區(qū)的三大主斷裂之一,而且膠西北地區(qū)的三大斷裂控制了膠東80%以上的金礦儲(chǔ)量,這么大規(guī)模的金礦集中在膠西北地區(qū)必定有其特殊的區(qū)域地質(zhì)背景和特殊的控礦規(guī)律。本文選取膠西北地區(qū)招平斷裂帶上的四個(gè)金礦床——玲瓏金礦、大尹格莊金礦、夏甸金礦和謝家溝金礦,首先對(duì)其地質(zhì)特征—礦體特征、礦石類型、組構(gòu)特征、礦物類型、金的賦存狀態(tài)和圍巖蝕變六個(gè)方面進(jìn)行歸納總結(jié);對(duì)四個(gè)金礦床的年代學(xué)、主量元素、微量元素和稀土元素地球化學(xué)數(shù)據(jù)進(jìn)行了分析。年代學(xué)研究表明招平斷裂帶金礦主要成礦年齡介于130~110Ma之間,金礦受同一地殼演化控制,具有相同的大地構(gòu)造背景。主量元素特征顯示招平斷裂帶的巖石樣品均顯示出高鉀、貧鈦及磷、過鋁質(zhì)、鈣堿性的特征;微量元素特征顯示成礦物質(zhì)來源具有多樣性,可能為殼幔混合來源;稀土元素特征顯示所有樣品均表現(xiàn)出輕稀土富集、重稀土虧損的平緩“右傾”曲線分配型式。根據(jù)地球化學(xué)特征對(duì)巖石成因及形成環(huán)境探討認(rèn)為,燕山早期的成巖作用與晚期的成礦作用關(guān)系密切,具有相同的巖漿來源,可能為同一巖漿活動(dòng)的先后產(chǎn)物,招平斷裂帶金礦床花崗巖及蝕變巖可能形成于擠壓造山帶構(gòu)造背景下。本文從構(gòu)造控礦和脈巖控礦兩個(gè)方面對(duì)招平斷裂帶的控礦規(guī)律進(jìn)行了研究,招平斷裂帶區(qū)域上主要受到郯廬斷裂帶中生代強(qiáng)烈構(gòu)造巖漿活動(dòng)的影響,其斷裂構(gòu)造為成礦提供了容礦空間;招平斷裂帶部分礦體與脈巖在空間上的相依性和物質(zhì)來源的同源性,表明招平招平斷裂上的金礦床與脈巖有著密切的聯(lián)系。所以,脈巖可以作為招平斷裂帶的找礦標(biāo)志。
[Abstract]:The Zhaoping fault zone is one of the three major faults in the gold accumulation area of northwestern Jiao, and the three faults in the northwestern area control over 80% of the gold reserves in Jiaodong. There must be a special regional geological background and a special ore-controlling law for such a large gold deposit concentrated in the northwestern Jiao area. In this paper, four gold deposits, Linglong gold deposit, Dayingezhuang gold deposit, Xiadian gold deposit and Xie Jiagou gold deposit in Zhaoping fault zone of northwestern Jiao are selected. Firstly, the geological characteristics, ore types, fabric characteristics and mineral types of the gold deposits are analyzed. The occurrence state of gold and the alteration of surrounding rock are summarized and the geochemistry data of the four gold deposits are analyzed in terms of geochronology, principal elements, trace elements and rare earth elements. The chronological study shows that the main metallogenic age of the Zhaoping fault zone is between 130~110Ma and the gold deposit is controlled by the same crustal evolution and has the same tectonic background. The characteristics of main elements show that the rock samples of Zhaoping fault zone all show the characteristics of high potassium, poor titanium and phosphorus, peraluminous, calc-alkaline, trace element characteristics show that the source of ore-forming material is diverse, which may be the mixed source of crust and mantle. The characteristics of rare earth elements show that all samples show light rare earth enrichment, and the distribution pattern of "right dip" curve of heavy rare earth deficiency is gentle. According to the geochemical characteristics of the petrogenesis and formation environment, it is considered that the early Yanshanian diagenesis is closely related to the late mineralization and has the same magma source, which may be the product of the same magmatic activity. The granites and altered rocks of the Zhaoping fault zone may have been formed in the tectonic setting of the compressional orogenic belt. In this paper, the ore-controlling law of Zhaoping fault zone is studied from two aspects of tectonic ore control and vein rock ore-control. The area of Zhaoping fault zone is mainly affected by the Mesozoic tectonic magma activity in the Tanlu fault zone. The fault structure provides ore-bearing space for mineralization, the spatial dependence of some orebodies and dike rocks and the homology of material sources in Zhaoping fault zone indicate that the gold deposits on Zhaoping fault are closely related to dike rocks. Therefore, dike rock can be used as a prospecting marker of Zhaoping fault zone.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.51

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 蘇小四;脈巖與脈狀金礦：一個(gè)簡(jiǎn)要的評(píng)述[J];長(zhǎng)春地質(zhì)學(xué)院學(xué)報(bào);1994年01期

2 鄧軍,翟裕生,楊立強(qiáng),肖榮閣,孫忠實(shí);構(gòu)造演化與成礦系統(tǒng)動(dòng)力學(xué)——以膠東金礦集中區(qū)為例[J];地學(xué)前緣;1999年02期

3 盧煥章,袁萬春,張國平,李院生,龍洪波;玲瓏—焦家地區(qū)主要金礦床穩(wěn)定同位素及同位素年代學(xué)[J];桂林工學(xué)院學(xué)報(bào);1999年01期

4 Yutong Yan;Na Zhang;Shengrong Li;Yongsheng Li;;Mineral chemistry and isotope geochemistry of pyrite from the Heilangou gold deposit, Jiaodong Peninsula, Eastern China[J];Geoscience Frontiers;2014年02期

5 翟明國,楊進(jìn)輝,劉文軍;膠東大型黃金礦集區(qū)及大規(guī)模成礦作用[J];中國科學(xué)(D輯:地球科學(xué));2001年07期

6 郭春影;張文釗;葛良勝;卿敏;高幫飛;夏銳;;膠東西北部金礦形成深度與剝蝕程度概略評(píng)價(jià)[J];金屬礦山;2011年08期

7 羅天明;脈巖與熱液脈狀金礦化的時(shí)空伴生及其地質(zhì)意義[J];礦產(chǎn)與地質(zhì);1992年02期

8 楊立強(qiáng);鄧軍;王中亮;張良;郭林楠;宋明春;鄭小禮;;膠東中生代金成礦系統(tǒng)[J];巖石學(xué)報(bào);2014年09期

相關(guān)博士學(xué)位論文 前1條

1 李金祥;膠東西北部招平斷裂帶構(gòu)造特征與成礦[D];中國地質(zhì)大學(xué)（北京）;2005年

相關(guān)碩士學(xué)位論文 前1條

1 許亞青;膠東構(gòu)造花崗巖相分布與夏甸金礦深部成礦規(guī)律研究[D];中國地質(zhì)大學(xué)（北京）;2014年

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