CAJ | 학술논문

小秦岭地区是中国重要的金钼矿产基地。以构造岩浆成矿系统为指导，综合研究认为区内金钼多金属矿床可分为印支期-燕山期与重熔型花岗岩浆侵入活动有关的金（钼）矿床成矿系列和与深源浅成型花岗岩、碱性岩有关的钼（金钨）矿床成矿系列。金（钼）矿床类型主要包括石英脉型、构造蚀变岩型、糜棱岩型、爆破角砾岩型和复合型等，以前两者为主；钼（金钨）矿床类型主要包括斑岩型、斑岩矽卡岩型、斑岩爆破角砾岩型、石英碳酸岩脉型和构造蚀变岩型等，也以前两者为主。该区三叠世以来共发生过3次岩浆侵入活动，每次都伴有不同程度的钼金矿化作用，并分别对应于不同的钼金矿化高峰期。钼的成矿作用分为印支期（210～220 Ma）和燕山期早白垩世早期（140～145 Ma）、早白垩世中晚期（110～138 Ma）；金的成矿作用分为印支期（约220 Ma）和燕山期早白垩世中晚期（约130 Ma）；钼、金成矿在印支期和燕山期早白垩世中晚期叠合，而在燕山期早白垩世早期分离。整体上，区内岩体与断裂构造控矿特征明显，燕山期金钼成矿作用强烈发育。该区娃娃沟-峪耳沟、峪耳沟-曹家沟、太子坪-葫芦沟-荒地沟与文公岭北坡等地区为金钼多金属矿的有利找矿靶区，并应特别重视中酸性小岩体的含矿性评价。
소진령지구시중국중요적금목광산기지。이구조암장성광계통위지도，종합연구인위구내금목다금속광상가분위인지기-연산기여중용형화강암장침입활동유관적금（목）광상성광계렬화여심원천성형화강암、감성암유관적목（금오）광상성광계렬。금（목）광상류형주요포괄석영맥형、구조식변암형、미릉암형、폭파각력암형화복합형등，이전량자위주；목（금오）광상류형주요포괄반암형、반암석잡암형、반암폭파각력암형、석영탄산암맥형화구조식변암형등，야이전량자위주。해구삼첩세이래공발생과3차암장침입활동，매차도반유불동정도적목금광화작용，병분별대응우불동적목금광화고봉기。목적성광작용분위인지기（210～220 Ma）화연산기조백성세조기（140～145 Ma）、조백성세중만기（110～138 Ma）；금적성광작용분위인지기（약220 Ma）화연산기조백성세중만기（약130 Ma）；목、금성광재인지기화연산기조백성세중만기첩합，이재연산기조백성세조기분리。정체상，구내암체여단렬구조공광특정명현，연산기금목성광작용강렬발육。해구왜왜구-욕이구、욕이구-조가구、태자평-호호구-황지구여문공령북파등지구위금목다금속광적유리조광파구，병응특별중시중산성소암체적함광성평개。
Xiaoqinling area is an important Au-Mo mineral base in China.Based on the tectonic-magmatic-metallogenic system,the Au-Mo polymetallic deposits in Xiaoqinling area can be divided into two metallogenic series:Au (Mo)deposits related to remelting granite magmatic intrusion,and Mo (Au-W)deposits related to deep-hypabyssal granites and alkaline rocks in Indosinian-Yanshanian.The main types of Au (Mo)deposits include quartz vein,structural altered rock-host,mylonite, explosive breccia,composite rock,etc.,and the first two types are predominant.The main types of Mo (Au-W)deposits include porphyry,porphyry-skarn,porphyry-explosive breccia,quartz-carbonate vein,structural altered rock-host,etc.,and the first two types are also predominant. There are three magmatic intrusion activities accompanied by different degrees of Mo-Au mineralization since Triassic,corresponding to three different peaks of Mo-Au mineralization.Mo mineralization epoch includes Indosinian (210-220 Ma),the early stage of Early Cretaceous (140-145 Ma) and the middle-late stage of Early Cretaceous (110-138 Ma) in Yanshanian;Au mineralization epoch includes Indosinian (about 220 Ma)and the middle-late stage of Early Cretaceous in Yanshanian (about 130 Ma);Mo and Au mineralizations coincide in Indosinian and the middle-late stage of Early Cretaceous in Yanshanian,but separate in the early stage of Early Cretaceous in Yanshanian. Characteristics of intrusion and fault tectonic ore-controlling are obvious,and Au-Mo mineralization in Yanshanian is strong in Xiaoqinling area as a whole.The favorable prospecting targets for Au-Mo polymetallic in Xiaoqinling area are Wawagou-Yu'ergou, Yu'ergou-Caojiagou, Taiziping-Hulugou-Huangdigou and the northern slope of Wengongling,and the ore-bearing potential evaluation of intermediate-acid small intrusion should be paid attention to.