本文關鍵詞：新疆東準噶爾地區(qū)銅礦勘查區(qū)找礦方向預測研究　出處：《中國地質(zhì)大學(北京)》2016年碩士論文　論文類型：學位論文

  更多相關文章： 新疆東準噶爾 元素質(zhì)量遷移 定量計算 多維異常體系 成礦預測

【摘要】：論文以新疆東準噶爾地區(qū)銅礦勘查區(qū)拉伊克勒克和烏倫布拉克兩個銅礦床為研究對象,對礦化蝕變過程中微量元素和常量元素質(zhì)量遷移進行計算。根據(jù)元素質(zhì)量遷移計算結(jié)果,初步探討元素質(zhì)量遷移分布特征及與礦化體在空間上的內(nèi)在聯(lián)系。運用元素遷移量和遷移方向,揭示試驗區(qū)銅礦床的形成機制,并為試驗區(qū)進一步找礦工作提供一定的指示作用。本次研究主要取得如下幾點認識和成果:1.通過對礦床中元素富集貧化特征及規(guī)律的研究,篩選出兩個試驗區(qū)的地球化學勘查指標。拉伊克勒克凝灰?guī)r中銅礦床地球化學勘查指標有Cu、Ag、Mo、Se、S、Ba、Cs、Rb、K_2O;英云閃長巖中銅礦床地球化學勘查指標有Cu、Ag、Mo、Se、S、Ba、MgO、Na_2O、Ca O。烏倫布拉克銅礦床地球化學勘查指標有Cu、Ag、Mo、W、Se、S、Ba、Sr、Fe_2O_3。2.通過對拉伊克勒克銅礦床巖石元素質(zhì)量遷移定量計算,得出以下認識:(1)富集元素Cu、Ag、Mo、S、Se等帶入形成的正異常與銅礦體吻合度很高,凝灰?guī)r中Ba、Cs、Rb、K_2O等與英云閃長巖中Ba、MgO、Na_2O、CaO等帶出形成的負異常涵蓋了整個剖面。(2)英云閃長巖中MgO、Na_2O、CaO帶出產(chǎn)生的負異常,是巖漿期后熱液蝕變過程中元素遷移形成的3.通過對烏倫布拉克銅礦床巖石元素質(zhì)量遷移定量計算,探討元素質(zhì)量遷移特征與礦化體在空間上的內(nèi)在聯(lián)系,結(jié)果表明:賦礦閃長巖體中元素帶入帶出特征明顯,成礦階段發(fā)生明顯帶入的元素包括S、Cu、Ag、As、Sb、Mo、W和Se,以及H_2O~+等,發(fā)生明顯帶出的元素包括Ba、Sr、Rb、Fe_2O_3等,帶出元素形成的負異常范圍更大,涵蓋了帶入元素形成的正異常。4.根據(jù)各屬性異常的空間分布規(guī)律,總結(jié)出了由Ba、Sr、K_2O、CaO等為代表的負異常體系、S為代表礦化劑元素異常體系、Fe與成礦元素Cu的協(xié)同平衡體系、成礦元素Cu及其伴生元素Ag、Mo、Se、W異常體系構(gòu)成的多維異常體系。以多維異常體系理論為指導,對拉伊克勒克和烏倫布拉克兩個試驗區(qū)進行找礦方向預測。拉伊克勒克試驗區(qū)凝灰?guī)r和英云閃長巖與二長花崗巖接觸帶是今后找礦重點;烏倫布拉克試驗區(qū)閃長巖和閃長巖與安山巖接觸帶是今后找礦重點。
[Abstract]:The paper takes the Ray Klerk and Urenblak copper deposits in the copper exploration area of the East Junggar area of Xinjiang as the research objects. The mass migration of trace elements and constant elements in the process of mineralization and alteration is calculated and calculated according to the results of mass migration of elements. The distribution characteristics of mass migration of elements and their spatial relationship with mineralized bodies are discussed preliminarily. The formation mechanism of copper deposits in the experimental area is revealed by means of the amount and direction of element migration. And provide some indication for further prospecting work in the test area. This study mainly obtained the following understanding and achievements: 1. Through the study of the characteristics and laws of the enrichment and dilution of elements in the deposit. The geochemical exploration indexes of the copper deposits in Ray Klerk tuff are selected. The geochemical exploration index of copper deposit in Yingyun diorite is Cu, Cu, Ag, Mo, S, Ba, mg, O, Na _ 2O, Ca, O, Na _ 2O, O, and Cu, in Wulunburak copper deposit. Based on the quantitative calculation of the mass migration of rock elements in the Ray Klerk copper deposit, the following understanding is obtained: 1) the enrichment element Cu is obtained by the quantitative calculation of the mass migration of the elements in the rocks of the Ray Klerk copper deposit. The positive anomalies brought in by Ag-Mo-Mo-Sn-Se and so on are in good agreement with the copper bodies, such as Ba-Csln RbSe K _ 2O in tuff and Ba-MgO _ 2O in Yingyun diorite. The negative anomalies formed by the CaO and other belts cover the negative anomalies produced by the MgO- Na _ S _ 2O-CaO belt in the diorite of the whole section. Through the quantitative calculation of the mass migration of the elements in the rocks of the Wulunburak copper deposit, the relationship between the characteristics of mass migration of elements and the mineralization in space is discussed. The results show that the elements in the ore-bearing diorite are obviously brought out, and the elements brought into the ore-forming stage include ScuCuCuAg-As-SbMo-Mow, See, and H _ 2O _ 2O ~, and so on. The elements with obvious outliers include BahsrsrbsrbsFe2O3 and so on, and the range of negative anomalies formed by these elements is larger. According to the spatial distribution law of each attribute anomaly, the negative anomaly system represented by Baer SrK _ 2O _ 2O _ Cao and so on is summarized. S is the synergistic equilibrium system between Fe and Cu, and the metallogenic element Cu and its associated element, Ag-Mo-Se, represent the anomalous system of mineralizer elements. The multi-dimensional anomaly system formed by W anomaly system is guided by the theory of multi-dimensional anomaly system. The prospecting direction of Ray Klerk and Urenblak is forecasted. The contact zone of tuff and quartz diorite with monzonitic granite in Ray Ray experimental area is the focus of ore prospecting in the future. Diorite and contact zone between diorite and andesite in Wulunblake experimental area are the key points of ore prospecting in the future.
【學位授予單位】：中國地質(zhì)大學(北京)
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：P618.41

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