發(fā)布時間：2019-06-20 09:47

【摘要】：伏牛山北部礦區(qū)銅多金屬礦床是近年來發(fā)現(xiàn)的小型礦床,位于揚子地塊下?lián)P子臺褶帶坳陷中,主要產出于湯侖復背斜的北翼次級雷打山平臥向斜核部。礦體呈透鏡狀產于花崗閃長斑巖與二疊系棲霞組和三疊系青龍組碳酸鹽巖外接觸帶中。本論文通過對伏牛山銅礦床礦體特征、礦物組成及礦石組構研究,確定礦床成因類型及找礦方向。通過電磁法、激電中梯法等物探手段,確定了有利的找礦靶區(qū)并進行了工程驗證。本論文取得的主要成果如下:1.伏牛山北部礦區(qū)銅礦床呈透鏡狀產于花崗閃長斑巖與二疊系棲霞組和三疊系青龍組碳酸鹽巖接觸帶中,礦體賦存在矽卡巖帶中。2.礦石礦物組成研究表明,矽卡巖礦物主要有石榴子石、透輝石、陽起石、綠簾石、透閃石、綠泥石等,金屬礦物有黃銅礦、黃鐵礦,磁鐵礦、磁黃鐵礦、閃鋅礦、方鉛礦。3.伏牛山北部礦區(qū)銅礦床成礦作用方式以接觸交代作用為主,本區(qū)礦床類型為矽卡巖型銅多金屬礦床。4.成礦地質條件研究表明,花崗閃長斑巖(圍巖)的接觸帶具有矽卡巖型銅礦化找礦潛力。5.在礦床地質特征綜合分析的基礎上,結合地球物理探測異常分析,圈定有力的找礦靶區(qū),是十分有效的找礦方法。
[Abstract]:The copper polymetallic deposit in the northern part of the Volu Mountain is a small deposit discovered in recent years. It is located in the lower Yangtze platform-fold belt depression of the Yangtze block, which is mainly produced in the north wing of the Tang-un complex anticline. The ore body is formed in the outer contact zone of the granodiorite porphyry and the Permian and the Triassic Qinglong Formation. Based on the study of the ore body characteristics, the mineral composition and the ore structure of the copper deposit in the Voltaoshan copper deposit, the genetic type and the prospecting direction of the deposit are determined. The favorable prospecting target area is determined and the engineering verification is carried out by means of the electromagnetic method, the gradient method in the electric field and the like. The main results of this thesis are as follows:1. The copper deposit in the northern part of the Funiu Mountain is in the form of a lens, which is found in the carbonate contact zone of the granodiorite porphyry and the Permian and the Triassic Qinglong Formation. The study of the mineral composition of the ore shows that the minerals of the rock are mainly garnet, diopside, actinolite, epidote, tremolite, chlorite and so on. The metal minerals include chalcopyrite, pyrite, magnetite, pyrrhotite, sphalerite and galena. The ore-forming method of the copper deposit in the northern part of the Voltaoshan is dominated by the contact and cross-generation, and the type of the deposit in the area of the deposit is the type of the copper-polymetallic deposit of the tectonite type. The study of the ore-forming geological conditions shows that the contact zone of the flash-long porphyry (surrounding rock) has the potential for the exploration of the tectonite type copper ore. On the basis of the comprehensive analysis of the geological characteristics of the deposit, a strong prospecting target area is delineated by combining the geophysical exploration anomaly analysis, which is a very effective prospecting method.
【學位授予單位】：南京大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P618.41

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