本文選題：控礦構(gòu)造型式 + 欒川礦集區(qū)�。� 參考：《中國(guó)地質(zhì)大學(xué)(北京)》2015年碩士論文

【摘要】：欒川礦集區(qū)位于東秦嶺,是擁有如南泥湖、上房等儲(chǔ)量巨大的鉬鎢(鐵)礦床的成礦區(qū)帶。長(zhǎng)期以來(lái),欒川礦集區(qū)內(nèi)的各類(lèi)型礦床始終是學(xué)者們?cè)诘V床成礦理論與找礦勘探實(shí)踐方面的研究熱點(diǎn)。而礦集區(qū)內(nèi)各類(lèi)型礦床的控礦構(gòu)造型式尚未能夠得到完整的梳理。本文通過(guò)對(duì)前人各類(lèi)研究資料的總結(jié)、整理,結(jié)合前人的大量圖鑒和實(shí)地坑道內(nèi)、鉆探巖心的考察,在欒川礦集區(qū)內(nèi)不同類(lèi)型典型礦床地質(zhì)特征研究的基礎(chǔ)上,分析各個(gè)礦床的控礦構(gòu)造型式,并梳理了各個(gè)不同控礦構(gòu)造型式內(nèi)的礦化特征。本文取得如下主要成果:(1)欒川礦集區(qū)典型礦床可以劃分為斑巖-矽卡巖型鉬鎢(鐵)多金屬礦床、矽卡巖型硫多金屬礦床、熱液型鉛鋅銀礦床三個(gè)類(lèi)型。(2)欒川礦集區(qū)主要控礦構(gòu)造型式可以歸納為:接觸帶控礦構(gòu)造型式、褶皺控礦構(gòu)造型式、斷裂控礦構(gòu)造型式、層間斷裂控礦構(gòu)造型式四個(gè)類(lèi)型。(3)接觸帶控礦構(gòu)造型式是南泥湖-三道莊、上房、東魚(yú)庫(kù)等礦床的主要控礦構(gòu)造型式;褶皺控礦構(gòu)造型式在駱駝山礦區(qū)內(nèi)表現(xiàn)明顯;斷裂控礦構(gòu)造型式是冷水北溝等熱液型鉛鋅銀礦床的主要控礦構(gòu)造型式;層間斷裂、層間裂隙控礦構(gòu)造型式是西溝、銀洞溝、百爐溝等礦床的主要控礦構(gòu)造型式。(4)同類(lèi)控礦構(gòu)造型式在不同礦床、不同地段的礦化特征也具有明顯的差異,如:南泥湖礦段、上房礦床內(nèi)礦化以細(xì)脈-網(wǎng)脈狀礦化為主;三道莊礦床則以浸染狀礦化為主;東魚(yú)庫(kù)鉬礦床兼而有之。在鉛鋅礦床控礦構(gòu)造不同部位,礦石的結(jié)構(gòu)構(gòu)造具有明顯的差異。(5)欒川礦集區(qū)內(nèi)“兩背夾一向”的區(qū)域性構(gòu)造格局主要控制了區(qū)內(nèi)不同類(lèi)型礦床及控礦構(gòu)造型式的空間分布。
[Abstract]:Luanchuan ore concentration area, located in the East Qinling Mountains, is a metallogenic belt with huge reserves of molybdenum and tungsten (iron) deposits such as Nannihu and Shangfang. For a long time, various types of deposits in Luanchuan ore concentration area have always been the research focus of scholars in ore deposit formation theory and prospecting and exploration practice. However, the ore-controlling structural patterns of various types of ore deposits in the ore concentration area have not been fully combed. In this paper, based on the summarization of all kinds of previous research data, combined with a large number of previous maps and field tunnel, drilling cores, on the basis of the study of geological characteristics of different types of typical deposits in Luanchuan Mine concentration area, the paper analyzes the geological characteristics of different types of typical deposits in Luanchuan Mine concentration area. The ore-controlling structural patterns of each deposit are analyzed, and the mineralization characteristics in different ore-controlling structural patterns are combed out. The main achievements of this paper are as follows: the typical deposits in Luanchuan ore concentration area can be divided into porphyry skarn type molybdenum tungsten (iron) polymetallic deposits and skarn type sulfur polymetallic deposits. The main ore-controlling structure types in Luanchuan ore concentration area can be concluded as follows: contact zone ore-controlling structure type, fold ore-controlling structure type, fault ore-controlling structure type. Four types of interlayer fault ore-controlling structure type. 3) the ore-controlling structure type of contact belt is the main ore-controlling structure type of Nannihu-Sandaozhuang, Shangfang and Dongyuku deposits, while the fold ore-controlling structure pattern is obvious in Luoyushan mine area. Fault ore-controlling structure type is the main ore-controlling structure type of cold-water Beigou isothermal type lead-zinc-silver deposit, interlayer fracture and interlayer fissure ore-controlling structure type is Xigou, Yindonggou, Yindonggou, The main ore-controlling tectonics of Baiyugou and other deposits. (4) the same type of ore-controlling structures have obvious differences in different ore deposits, such as: in the Nanjiehu section, the mineralization in Shangfang ore deposit is mainly vein-net mineralization; The Sandaozhuang deposit is dominated by disseminated mineralization, while the Dongyuku molybdenum deposit has both. In different parts of ore-controlling structure of lead-zinc deposit, the structural structure of ore is obviously different. 5) the regional tectonic pattern of "two back clipping" in Luanchuan ore concentration area mainly controls the spatial distribution of different types of deposits and ore-controlling structural patterns in the area.
【學(xué)位授予單位】：中國(guó)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(lèi)號(hào)】：P618.65;P618.4

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