CAJ | 학술논문

皖南云岭金矿位于长江中下游多金属成矿带与华南成矿带之间，属于江南造山带上的一个热液脉型矿床。基于云岭金矿区域地质背景，在该区开展了岩石露头测定、岩石标本物性测定和地球物理学相关研究。运用地面高精度磁测法，识别本区主要控矿构造为 NE向断裂带。根据激发极化法圈定高极化率异常区，并结合相应区域电阻率（可控源音频大地电磁法）和磁异常分布特征建立4种地球物理模型：低阻高极化模型、高阻高极化模型、高极化磁异常过渡带模型和高极化高磁异常模型。这4种地球物理模型建立在该区岩石物性与矿床成因基础之上，分别对应不同含矿模型：低阻高极化模型对应接触带上硫铁矿成矿区；高阻高极化模型对应含矿硅化带；高极化磁异常过渡带模型对应围岩蚀变带；高极化高磁异常模型对应岩浆侵入区。依据以上模型，可圈定NE向断裂带、断裂带西侧高阻硅化带及东侧蚀变岩体为找矿有利靶区。
환남운령금광위우장강중하유다금속성광대여화남성광대지간，속우강남조산대상적일개열액맥형광상。기우운령금광구역지질배경，재해구개전료암석로두측정、암석표본물성측정화지구물이학상관연구。운용지면고정도자측법，식별본구주요공광구조위 NE향단렬대。근거격발겁화법권정고겁화솔이상구，병결합상응구역전조솔（가공원음빈대지전자법）화자이상분포특정건립4충지구물리모형：저조고겁화모형、고조고겁화모형、고겁화자이상과도대모형화고겁화고자이상모형。저4충지구물리모형건립재해구암석물성여광상성인기출지상，분별대응불동함광모형：저조고겁화모형대응접촉대상류철광성광구；고조고겁화모형대응함광규화대；고겁화자이상과도대모형대응위암식변대；고겁화고자이상모형대응암장침입구。의거이상모형，가권정NE향단렬대、단렬대서측고조규화대급동측식변암체위조광유리파구。
Yunling Au deposit,which is located in the southern Anhui between polymetallic metallogenic belts of the middle-lower reach of Yangtze River and South China,is hydrothermal vein in Jiangnan orogenic belt.Based on the geological setting of Yunling Au deposit,the outcrop,physical property and geophysics of rocks were measured.The main ore-controlling structure is NE fault by the means of ground high-precision magnetic method.Four geophysical models are built according to the distributions of resistivity,magnetic anomaly and polarizability anomaly measured by ground high-precision magnetic method,controlled source audio-frequency magnetotelluric (CSAMT)and induced polarization method.The geophysical models include low-resistance and high-polarization, high-resistance and high-polarization, high-polarization and magnetic-anomaly transition, and high-polarization and high-magnetic-anomaly models. The models are established according to the physical property of rock and ore genesis in Yunling Au deposit,corresponding to the different ore-bearing models.Low-resistance and high-polarization model corresponds to pyrite metallogenic belt in contact zone;high-resistance and high-polarization model corresponds to ore-bearing silicified belt;high-polarization and magnetic-anomaly transition model corresponds to wall rock alteration zone;high-polarization and high-magnetic-anomaly model corresponds to magma intrusion zone.According to the models,the favorable prospecting targets in Yunling Au deposit are NE fault,high-resistance silicified belt in the west of fault and alteration intrusion in the east.