個(gè)舊錫銅多金屬礦區(qū)成礦多樣性及定量評價(jià)
發(fā)布時(shí)間：2018-08-16 13:35
【摘要】：個(gè)舊錫銅多金屬礦區(qū)有著上百年研究的歷史,國內(nèi)外諸多專家和學(xué)者們對個(gè)舊從各個(gè)方面都進(jìn)行過詳盡的研究,相關(guān)的研究成果也非常豐碩。但受前人找礦指導(dǎo)思想的影響,長期以來個(gè)舊錫銅多金屬礦區(qū)的找礦和開采重點(diǎn)是地表砂礦、矽卡巖型硫化物礦床以及層間氧化物礦等幾種類型的礦床,而對于蝕變花崗巖型礦床、與煌斑巖有關(guān)的礦床以及與噴流沉積有關(guān)的礦床等類型沒有給予足夠的重視。這些不同類型的礦床體現(xiàn)了個(gè)舊地區(qū)成礦的多樣性,而成礦多樣性特征在云南個(gè)舊錫銅多金屬礦區(qū)的表現(xiàn)非常明顯。在空間上的表現(xiàn)為礦床的空間分布從上至下大致有地表砂礦、層間氧化礦床、接觸帶矽卡巖型硫化物礦床,以及近些年在老廠東發(fā)現(xiàn)的巖體內(nèi)部與蝕變花崗巖有關(guān)的銅多金屬礦床。在成因方面從最開始一致認(rèn)為的巖漿熱液成因論到海底熱液噴流成因的提出,再到多期、多源和多因復(fù)成礦床觀點(diǎn)日趨得到認(rèn)可,隨著認(rèn)識的加深以及新的礦床類型不斷發(fā)現(xiàn),個(gè)舊地區(qū)礦床成因多樣性不斷地在豐富。成礦多樣性和礦床譜系的問題自從提出以來,前人對云南個(gè)舊錫銅多金屬礦區(qū)的成礦多樣性方面有一定的研究,但隨著近幾年來有新的礦床揭露和進(jìn)一步的研究程度的提高,個(gè)舊地區(qū)的成礦多樣性和礦床譜系有待進(jìn)一步地補(bǔ)充完善。本文主要指導(dǎo)思想為趙鵬大等人提出的“三聯(lián)式”定量成礦預(yù)測理論�！叭�(lián)式”定量成礦預(yù)測理論是以地質(zhì)異常、成礦多樣性以及礦床譜系為主要研究對象,分析地質(zhì)異常是基礎(chǔ),研究成礦多樣性以及礦床譜系的特征做為指導(dǎo),并且對各種礦化信息和特征以及成礦規(guī)律定量化的研究。加強(qiáng)這三者研究之間的相關(guān)性,可以清楚地認(rèn)識到因果關(guān)系,地質(zhì)異常(原因)-成礦多樣性(表現(xiàn)形式)-礦床譜系(表現(xiàn)規(guī)律)。它最終是要分析研究某地成礦多樣性的特征,并在此基礎(chǔ)上建立礦床譜系,將預(yù)測的對象放在該地整個(gè)成礦時(shí)間譜系、空間譜系以及成因譜系中研究,以此來進(jìn)行礦床預(yù)測。本文對云南個(gè)舊錫銅多金屬礦區(qū)內(nèi)主要成礦類型在成礦時(shí)代、礦床分布空間、成礦物質(zhì)來源以及礦床成因類型等方面的成礦多樣性特征進(jìn)行分析,在分析成礦多樣性特征的基礎(chǔ)上分別建立了個(gè)舊錫銅多金屬礦區(qū)的礦床時(shí)間譜系、礦床空間譜系以及與前兩者相關(guān)的“時(shí)-空-因”綜合譜系。并在此基礎(chǔ)上,對成礦多樣性礦床地球化學(xué)特征以及成礦多樣性空間特征按不同礦床類型分別進(jìn)行對比分析,探求這些礦床類型多樣性特征的異同點(diǎn)。最后利用“5P”定量成礦預(yù)測方法后兩步首先對個(gè)舊地區(qū)東礦區(qū)主要金屬礦產(chǎn)資源潛力進(jìn)行定量預(yù)測與評價(jià),其次對個(gè)舊老卡巖體地段深部類似于西凹銅多金屬礦床的找礦前景進(jìn)行評價(jià)。本文所取得的主要認(rèn)識有：1、云南個(gè)舊地區(qū)巖漿活動以及構(gòu)造運(yùn)動頻繁,使得成礦地質(zhì)條件復(fù)雜,形成了個(gè)舊礦區(qū)內(nèi)種類繁多的錫銅多金屬礦產(chǎn)資源,為成礦多樣性的研究提供了基礎(chǔ)。本文分別從成礦時(shí)代、礦床分布空間、成礦物質(zhì)來源和礦床成因類型等方面分析了成礦多樣性在云南個(gè)舊地區(qū)的表現(xiàn)特征。2、在成礦多樣性分析基礎(chǔ)上,結(jié)合前人研究成果,按成礦時(shí)代和含礦建造劃分了四個(gè)成礦系列,與燕山期堿性巖有關(guān)的稀有、放射性及有色金屬-非金屬礦床成礦系列(Ⅰ)與燕山期花崗巖有關(guān)的稀有、有色及貴金屬礦床成礦系列(Ⅱ),與燕山期斑巖脈有關(guān)的有色及貴金屬礦床成礦系列(Ⅲ),以及與喜馬拉雅期陸相沉積及表生改造有關(guān)的稀有、有色及貴金屬礦床成礦系列(Ⅳ)。其中系列Ⅰ-Ⅲ為燕山晚期巖漿-熱液內(nèi)生成礦作用的產(chǎn)物,系列Ⅳ為前三個(gè)系列經(jīng)后期表生改造的產(chǎn)物。將蝕變花崗巖型銅多金屬礦床劃分到系列Ⅱ中與花崗巖漿期后氣化高溫?zé)嵋河嘘P(guān)的稀有、有色及貴金屬礦床成礦亞系列(Ⅱ-1)3、在分析個(gè)舊錫銅多金屬礦區(qū)成礦多樣性的表現(xiàn)特征基礎(chǔ)上,總結(jié)建立了礦床時(shí)間譜系和礦床空間譜系以及礦床“時(shí)-空-因”綜合譜系。個(gè)舊錫銅多金屬礦區(qū)主要成礦時(shí)代為燕山晚期,伴隨區(qū)域巖漿活動和構(gòu)造運(yùn)動開始大規(guī)模的成礦作用,形成巖漿期后熱液礦床及其他相關(guān)的成礦類型。喜馬拉雅期存在一定規(guī)模的風(fēng)化-沉積成礦作用,以層間氧化礦床以及各種砂錫礦床為代表。礦體空間分布的總體是圍繞個(gè)舊雜巖體呈不對稱的環(huán)狀、帶狀展布,以花崗巖體為中心由內(nèi)向外分為巖體內(nèi)接觸帶、正接觸帶、巖體外接觸帶和地表的礦體空間分布特征,并大致表現(xiàn)為Be-W、Sn (Cu、Mo、Bi、Be)-Sn、Pb、Ag-Pb、Zn的元素分帶特征。以成礦時(shí)代、成因類型為縱坐標(biāo),以成礦密集區(qū)內(nèi)礦床空間分布為橫坐標(biāo),建立了個(gè)舊錫銅多金屬礦區(qū)礦床“時(shí)-空-因”綜合譜系圖。最后對比滇東南地區(qū)鎢錫多金屬礦床“時(shí)-空-因”綜合譜系圖,在不同尺度內(nèi)對礦床譜系進(jìn)行了比較。4、西凹銅多金屬礦體賦存于巖體內(nèi)部花崗巖邊緣相的蝕變巖帶中,處于巖體形態(tài)由陡變緩的特殊部位,屬于中小型礦床,其成礦元素的品位較高,礦體中Cu的平均含量大致為1.79%,Sn的平均含量約為0.51%。成礦作用與蝕變作用關(guān)系密切,礦床的圍巖蝕變類型眾多,其中與成礦作用關(guān)系密切的蝕變類型有鉀長石化、螢石化和電氣石化。蝕變分帶不具明顯對稱性,按主要蝕變類型分為鉀長石化帶和綠簾石化帶兩個(gè)大的蝕變帶,其中鉀長石化帶可見明顯礦化。成礦物質(zhì)來源極有可能是侵入的黑云母花崗巖,礦體賦存空間位置也暗示成礦物質(zhì)與黑云母花崗巖的關(guān)系密切,側(cè)面反映成礦物質(zhì)的來源。結(jié)合礦體形態(tài)、蝕變帶的空間位置分布和蝕變帶接觸的突變性,推測礦體賦存的空間極有可能為含礦熱液運(yùn)移的通道,在充填交代作用下成礦。含礦熱液中金屬元素的遷移形式應(yīng)以氟化物、氯化物的絡(luò)合物為主。5、選取個(gè)舊錫銅多金屬礦區(qū)各大礦田內(nèi)礦床的典型成礦類型,主要包括層間氧化礦床、接觸帶矽卡巖型硫化物礦床、變玄武巖型硫化物礦床以及蝕變花崗巖型銅多金屬礦床,將每種礦床類型分布在不同礦田內(nèi)的地球化學(xué)特征進(jìn)行分析對比。將這些不同成礦類型礦床的礦石微量元素和稀土元素作為研究對象,主要分析對比了成礦元素及其伴生元素含量、微量元素相關(guān)性、稀土元素特征和元素特征值等地球化學(xué)特征。6、同樣選取如前所述的四種成礦類型,以礦床中成礦元素的含量為主要研究對象,分析對比了相同成礦類型的礦床在不同礦田的礦段內(nèi)的空間分布情況,以及主要成礦元素銅和錫元素含量的標(biāo)高分布情況,含量值的大小,高值區(qū)間的分布等,以及成礦元素含量在垂向上的變化情況等。7、在成礦多樣性分析及成礦譜系建立的基礎(chǔ)上,結(jié)合云南個(gè)舊地區(qū)研究程度和所收集的相關(guān)資料,利用“5P”定量成礦預(yù)測方法后兩步對個(gè)舊東區(qū)進(jìn)行定量評價(jià)。對個(gè)舊地區(qū)東礦區(qū)主要金屬礦產(chǎn)資源潛力進(jìn)行定量預(yù)測與評價(jià),圈定出五個(gè)礦產(chǎn)資源體的潛在地段并進(jìn)行評價(jià),其中成礦潛力較大的為松礦西靶區(qū)(Ⅱ)、竹葉山靶區(qū)(Ⅳ)和大白巖南靶區(qū)(V)。其次對個(gè)舊老卡巖體地段深部類似于西凹銅多金屬礦床的找礦前景進(jìn)行評價(jià),探尋此類礦床時(shí),需要查明蝕變特征,尤其是鉀長石化這種蝕變�？梢岳貌煌卸蔚目拥乐卸喾N微量元素的原生暈異常特征來進(jìn)行輔助判斷,如Cu、Sb、Bi、Pb、Sn、Cd和Be這些元素,在深處礦體頂部相應(yīng)位置均有不同的異常特征。而像前緣暈較發(fā)育的元素,如As、Ag、Pb和Zn這些元素,在巖體淺部這些元素開始富集的地區(qū),可以作為深部存在礦體的依據(jù)之一。還有一些元素,如Sr和Ba元素,其原生暈的分布非常有特征,針對巖體界面無法利用常規(guī)方法獲得的地區(qū),可以利用這個(gè)特點(diǎn)進(jìn)行推測。
[Abstract]:Gejiu tin-copper polymetallic mining area has a history of more than one hundred years. Many experts and scholars at home and abroad have made detailed research on Gejiu from various aspects. Relevant research results are also very rich. Skarn-type sulfide deposits and interlayer oxide deposits are several types of deposits, but not enough attention has been paid to altered granite-type deposits, lamprophyre-related deposits and exhalative deposits. Gejiu tin-copper polymetallic deposit in Yunnan Province is very obvious.The spatial distribution of the deposits is characterized by surface placers, interlayer oxidation deposits, SKARN-TYPE sulfide deposits in contact zones, and copper polymetallic deposits related to altered granite in the intrusive bodies discovered in Laochangdong in recent years. From the origin of magmatic hydrothermal origin to submarine hydrothermal exhalation origin, and then to multi-stage, multi-source and multi-genetic compound deposits are increasingly recognized. With the deepening of understanding and the discovery of new types of deposits, the genetic diversity of Gejiu deposits is constantly enriched. Since the question was put forward, the predecessors have done some research on the metallogenic diversity of Gejiu tin-copper polymetallic ore district in Yunnan. But with the discovery of new deposits in recent years and the improvement of further research, the metallogenic diversity and mineral deposit genealogy of Gejiu area need to be further improved. The theory of "triple" quantitative metallogenic prediction put forward by Da et al. is based on geological anomalies, metallogenic diversity and mineral deposit genealogy. The analysis of geological anomalies is the basis, the study of metallogenic diversity and the characteristics of mineral deposit genealogy is the guidance, and the information and characteristics of various mineralization are based on it. To strengthen the correlation between these three studies, we can clearly understand the causal relationship, geological anomalies (causes) - metallogenic diversity (manifestations) - mineral deposit genealogy (manifestations). It is ultimately to analyze the characteristics of metallogenic diversity in a certain place, and on this basis to establish a mineral deposit genealogy, and to predict the right. In this paper, the characteristics of metallogenic diversity of the main metallogenic types in Gejiu tin-copper polymetallic ore district, Yunnan Province, including metallogenic epoch, distribution space, source of metallogenic materials and genetic types of the deposit are analyzed. Based on the analysis of the characteristics of metallogenic diversity, the time-series, space-series and "time-space-cause" comprehensive spectrum of the deposits in Gejiu tin-copper polymetallic ore district are established respectively. In the last two steps of the "5P" quantitative metallogenic prediction method, the potential of the main metal mineral resources in the east mining area of Gejiu area is quantitatively predicted and evaluated, and the prospecting prospects of the deep part of Gejiu Laoka rock mass similar to Xiao copper polymetallic deposit are also discussed. The main understanding obtained in this paper is as follows: 1. The frequent magmatic activities and tectonic movements in Gejiu area, Yunnan Province, make the metallogenic geological conditions complex and form a variety of tin-copper polymetallic mineral resources in Gejiu area, which provide a basis for the study of metallogenic diversity. The characteristics of metallogenic diversity in Gejiu area of Yunnan Province are analyzed in terms of mineral sources and genetic types. 2. On the basis of analysis of metallogenic diversity and combined with predecessors'research results, four metallogenic series are divided according to metallogenic epoch and ore-bearing formation. Rare, radioactive and non-ferrous metal-nonmetallic minerals related to Yanshanian alkaline rocks are found. Bed metallogenic series (I) rare, nonferrous and noble metal deposits related to Yanshanian granites (II), nonferrous and noble metal deposits related to Yanshanian porphyry veins (III), and rare, nonferrous and noble metal deposits related to Himalayan continental sedimentation and supergene transformation (IV). Among them, series I-III Series IV is the product of late Yanshanian magmatic-hydrothermal endogenetic mineralization. The altered granite-type copper polymetallic deposits are divided into series II, the rare, non-ferrous and noble metal mineralization Subseries (II-1) 3, which are related to the high temperature hydrothermal solution of post-magmatic gasification of granite. On the basis of the characteristics of metallogenic diversity in the polymetallic ore area, the time-space-genetics and the time-space-genetics of the deposits are summarized and established. The main metallogenic epoch of Gejiu tin-copper polymetallic ore area is late Yanshanian, accompanied by regional magmatic activity and tectonic movement, the large-scale metallogenic process begins, forming magmatic stage. Posterior hydrothermal deposits and other related metallogenic types. There were weathering-sedimentary mineralization on a certain scale in Himalayan epoch, represented by interlayer oxidation deposits and various tin placer deposits. The spatial distribution characteristics of ore bodies in inner contact zone, normal contact zone, outer contact zone of rock mass and surface are roughly shown as element zoning characteristics of Be-W, Sn (Cu, Mo, Bi, Be) -Sn, Pb, Ag-Pb, Zn. Taking metallogenic epoch, genetic type as ordinate, and spatial distribution of ore deposits in metallogenic dense area as abscissa, Gejiu tin-copper polymetallic ore deposit is established. Finally, comparing the "time-space-cause" comprehensive genealogy of tungsten-tin polymetallic deposits in southeastern Yunnan, the deposit genealogy is compared in different scales. 4. Xiao copper polymetallic ore body occurs in the altered rock zone of granite margin facies within the rock mass, which is in a special position where the rock mass morphology is slowed down by steep change. The average content of Cu and Sn in the ore body is about 1.79% and 0.51% respectively. Metallogenesis is closely related to alteration. There are many types of wall rock alteration in the deposit. Among them, the alteration types closely related to mineralization are potassium feldspar, fluorite and electrification. According to the symmetry, the main alteration types are divided into two major alteration zones: the potassium feldspar zone and the epidote zone, in which the potassium feldspar zone is obviously mineralized. According to the shape of ore bodies, the spatial distribution of alteration zones and the sudden change of contact between alteration zones, it is speculated that the space of ore bodies is likely to be the passage of ore-bearing hydrothermal migration and mineralization under filling and metasomatism. Typical metallogenic types of ore deposits in major polymetallic ore fields include interlayer oxidation deposits, SKARN-TYPE sulfide deposits in contact zones, metabasalt-type sulfide deposits and altered granite-type copper-polymetallic deposits. Trace elements and rare earth elements in ore of ore-forming type deposits are taken as research objects. The geochemical characteristics of ore-forming elements and their associated elements, correlation of trace elements, characteristics of rare earth elements and characteristic values of elements are mainly analyzed and compared. 6. Similarly, four types of ore-forming types are selected, mainly the contents of ore-forming elements in ore deposits. The spatial distribution of the deposits of the same metallogenic type in different sections of the orefield, the elevation distribution of the contents of copper and tin, the magnitude of the content value, the distribution of the high value interval, and the vertical variation of the content of the metallogenic elements are analyzed and compared. 7. The analysis of metallogenic diversity. On the basis of the establishment of metallogenic pedigree, combining with the research degree of Gejiu area in Yunnan Province and the relevant data collected, the "5P" quantitative metallogenic prediction method is used to quantitatively evaluate the eastern Gejiu area. The ore-forming potential of this deposit is the Western target area (II), the Zhuyeshan target area (IV) and the southern target area (V) of Dabaiyan. Secondly, the prospecting prospects of the deep part of Gejiu Laoka rock mass similar to Xiao copper polymetallic deposit are evaluated. Various trace elements such as Cu, Sb, Bi, Pb, Sn, Cd and Be, which have different anomaly characteristics at the corresponding positions at the top of the deep orebody, can be judged by the anomaly characteristics of the primary halos of various trace elements in the tunnels of different middle sections. Some elements, such as Sr and Ba, are characterized by the distribution of primary halos, which can be used to predict the areas where the rock mass interface can not be obtained by conventional methods.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2015
【分類號】：P618.2
[Abstract]:Gejiu tin-copper polymetallic mining area has a history of more than one hundred years. Many experts and scholars at home and abroad have made detailed research on Gejiu from various aspects. Relevant research results are also very rich. Skarn-type sulfide deposits and interlayer oxide deposits are several types of deposits, but not enough attention has been paid to altered granite-type deposits, lamprophyre-related deposits and exhalative deposits. Gejiu tin-copper polymetallic deposit in Yunnan Province is very obvious.The spatial distribution of the deposits is characterized by surface placers, interlayer oxidation deposits, SKARN-TYPE sulfide deposits in contact zones, and copper polymetallic deposits related to altered granite in the intrusive bodies discovered in Laochangdong in recent years. From the origin of magmatic hydrothermal origin to submarine hydrothermal exhalation origin, and then to multi-stage, multi-source and multi-genetic compound deposits are increasingly recognized. With the deepening of understanding and the discovery of new types of deposits, the genetic diversity of Gejiu deposits is constantly enriched. Since the question was put forward, the predecessors have done some research on the metallogenic diversity of Gejiu tin-copper polymetallic ore district in Yunnan. But with the discovery of new deposits in recent years and the improvement of further research, the metallogenic diversity and mineral deposit genealogy of Gejiu area need to be further improved. The theory of "triple" quantitative metallogenic prediction put forward by Da et al. is based on geological anomalies, metallogenic diversity and mineral deposit genealogy. The analysis of geological anomalies is the basis, the study of metallogenic diversity and the characteristics of mineral deposit genealogy is the guidance, and the information and characteristics of various mineralization are based on it. To strengthen the correlation between these three studies, we can clearly understand the causal relationship, geological anomalies (causes) - metallogenic diversity (manifestations) - mineral deposit genealogy (manifestations). It is ultimately to analyze the characteristics of metallogenic diversity in a certain place, and on this basis to establish a mineral deposit genealogy, and to predict the right. In this paper, the characteristics of metallogenic diversity of the main metallogenic types in Gejiu tin-copper polymetallic ore district, Yunnan Province, including metallogenic epoch, distribution space, source of metallogenic materials and genetic types of the deposit are analyzed. Based on the analysis of the characteristics of metallogenic diversity, the time-series, space-series and "time-space-cause" comprehensive spectrum of the deposits in Gejiu tin-copper polymetallic ore district are established respectively. In the last two steps of the "5P" quantitative metallogenic prediction method, the potential of the main metal mineral resources in the east mining area of Gejiu area is quantitatively predicted and evaluated, and the prospecting prospects of the deep part of Gejiu Laoka rock mass similar to Xiao copper polymetallic deposit are also discussed. The main understanding obtained in this paper is as follows: 1. The frequent magmatic activities and tectonic movements in Gejiu area, Yunnan Province, make the metallogenic geological conditions complex and form a variety of tin-copper polymetallic mineral resources in Gejiu area, which provide a basis for the study of metallogenic diversity. The characteristics of metallogenic diversity in Gejiu area of Yunnan Province are analyzed in terms of mineral sources and genetic types. 2. On the basis of analysis of metallogenic diversity and combined with predecessors'research results, four metallogenic series are divided according to metallogenic epoch and ore-bearing formation. Rare, radioactive and non-ferrous metal-nonmetallic minerals related to Yanshanian alkaline rocks are found. Bed metallogenic series (I) rare, nonferrous and noble metal deposits related to Yanshanian granites (II), nonferrous and noble metal deposits related to Yanshanian porphyry veins (III), and rare, nonferrous and noble metal deposits related to Himalayan continental sedimentation and supergene transformation (IV). Among them, series I-III Series IV is the product of late Yanshanian magmatic-hydrothermal endogenetic mineralization. The altered granite-type copper polymetallic deposits are divided into series II, the rare, non-ferrous and noble metal mineralization Subseries (II-1) 3, which are related to the high temperature hydrothermal solution of post-magmatic gasification of granite. On the basis of the characteristics of metallogenic diversity in the polymetallic ore area, the time-space-genetics and the time-space-genetics of the deposits are summarized and established. The main metallogenic epoch of Gejiu tin-copper polymetallic ore area is late Yanshanian, accompanied by regional magmatic activity and tectonic movement, the large-scale metallogenic process begins, forming magmatic stage. Posterior hydrothermal deposits and other related metallogenic types. There were weathering-sedimentary mineralization on a certain scale in Himalayan epoch, represented by interlayer oxidation deposits and various tin placer deposits. The spatial distribution characteristics of ore bodies in inner contact zone, normal contact zone, outer contact zone of rock mass and surface are roughly shown as element zoning characteristics of Be-W, Sn (Cu, Mo, Bi, Be) -Sn, Pb, Ag-Pb, Zn. Taking metallogenic epoch, genetic type as ordinate, and spatial distribution of ore deposits in metallogenic dense area as abscissa, Gejiu tin-copper polymetallic ore deposit is established. Finally, comparing the "time-space-cause" comprehensive genealogy of tungsten-tin polymetallic deposits in southeastern Yunnan, the deposit genealogy is compared in different scales. 4. Xiao copper polymetallic ore body occurs in the altered rock zone of granite margin facies within the rock mass, which is in a special position where the rock mass morphology is slowed down by steep change. The average content of Cu and Sn in the ore body is about 1.79% and 0.51% respectively. Metallogenesis is closely related to alteration. There are many types of wall rock alteration in the deposit. Among them, the alteration types closely related to mineralization are potassium feldspar, fluorite and electrification. According to the symmetry, the main alteration types are divided into two major alteration zones: the potassium feldspar zone and the epidote zone, in which the potassium feldspar zone is obviously mineralized. According to the shape of ore bodies, the spatial distribution of alteration zones and the sudden change of contact between alteration zones, it is speculated that the space of ore bodies is likely to be the passage of ore-bearing hydrothermal migration and mineralization under filling and metasomatism. Typical metallogenic types of ore deposits in major polymetallic ore fields include interlayer oxidation deposits, SKARN-TYPE sulfide deposits in contact zones, metabasalt-type sulfide deposits and altered granite-type copper-polymetallic deposits. Trace elements and rare earth elements in ore of ore-forming type deposits are taken as research objects. The geochemical characteristics of ore-forming elements and their associated elements, correlation of trace elements, characteristics of rare earth elements and characteristic values of elements are mainly analyzed and compared. 6. Similarly, four types of ore-forming types are selected, mainly the contents of ore-forming elements in ore deposits. The spatial distribution of the deposits of the same metallogenic type in different sections of the orefield, the elevation distribution of the contents of copper and tin, the magnitude of the content value, the distribution of the high value interval, and the vertical variation of the content of the metallogenic elements are analyzed and compared. 7. The analysis of metallogenic diversity. On the basis of the establishment of metallogenic pedigree, combining with the research degree of Gejiu area in Yunnan Province and the relevant data collected, the "5P" quantitative metallogenic prediction method is used to quantitatively evaluate the eastern Gejiu area. The ore-forming potential of this deposit is the Western target area (II), the Zhuyeshan target area (IV) and the southern target area (V) of Dabaiyan. Secondly, the prospecting prospects of the deep part of Gejiu Laoka rock mass similar to Xiao copper polymetallic deposit are evaluated. Various trace elements such as Cu, Sb, Bi, Pb, Sn, Cd and Be, which have different anomaly characteristics at the corresponding positions at the top of the deep orebody, can be judged by the anomaly characteristics of the primary halos of various trace elements in the tunnels of different middle sections. Some elements, such as Sr and Ba, are characterized by the distribution of primary halos, which can be used to predict the areas where the rock mass interface can not be obtained by conventional methods.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2015
【分類號】：P618.2
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