赣南崇义-大余-上犹矿集区不同类型含矿石英中白云母^40Ar／^39Ar年龄及其地质意义  

^(40)Ar/^(39)Ar Ages of Muscovite from Different Types Tungsten-Bearing Quartz Veins in the Chong-Yu-You Concentrated Mineral Area in Gannan Region and Its Geological Significance

作　　者：刘善宝[1] 王登红[2] 陈毓川[1] 李建康[2] 应立娟[2] 许建祥[3] 曾载淋[3] 

机构地区：[1]中国地质科学院,北京100037 [2]中国地质科学院矿产资源所,北京100037 [3]江西省赣南地质调查大队,江西赣州341000

出　　处：《地质学报》2008年第7期932-940,共9页Acta Geologica Sinica

基　　金：国家科技支撑计划“南岭地区有色-贵重金属成矿潜力及综合探测技术示范研究”课题;中国地质调查局“中国成矿体系综合研究”项目;“我国重要矿产和区域成矿规律研究”项目资助的成果

摘　　要：崇义—大余—上犹矿集区是世界著名的黑钨矿床集中区,本文选择钨锡-多金属硫化物石英脉型(柯树岭和漂塘矿床)和锡钨石英脉型(仙鹅塘矿床)3个矿床石英中的白云母开展40Ar/39Ar年代学研究,测得坪年龄分别是:钨锡-多金属硫化物石英脉型是158.9±1.4 Ma(漂塘)、158.8±1.2 Ma(柯树岭);钨锡石英脉型的是231.4±2.4 Ma(仙鹅塘),在反等时线图上,其对应的截距年龄分别是158.8±1.6 Ma、158.7±1.9Ma和232.5±2.4 Ma。由此表明,在崇余犹矿集区内存在两个不同成矿时期,即以黑钨矿为主的多金属硫化物石英脉型矿床形成于中侏罗世,集中于160~150Ma之间,与南岭地区钨锡矿床的主成矿期是一致的;而以锡石为主的,并含有大量白钨矿的石英脉型矿床可形成于印支期。Chong-Yu-You mineral deposit intensive area is renowned for its wolframite. This paper focuses on the study of ^40Ar/^39Ar chronology of muscovite from three deposits： Keshuling and Piaotang tungsten-tinmultiple metals deposits （sulphide quartz vein type）, and Xian＇etang tungsten-tin deposit （quartz vein type） in the Chongyi-Dayu-Shangyou concentrated mineral area. The ^40Ar/^39Ar plateau age is 158.8±1.9 Ma, that of Keshuling is 158.8±1.2 Ma for Piaotang, and 231.4±2.4 Ma for Xianetang, and the ^40Ar/^39 Ar reverse isochron ages are 158.9±1.4 Ma, 158.7±1.9 Ma, and 232.5±2.4 Ma respectively. These results indicate that there occurred two metallogenic epochs in the Chong-Yu-You intensive mineral area. Namely, the tungsten-multiple sulfide quartz vein type deposits formed in the Middle Jurassic Epoch mainly between 160 and 150 Ma, similar to the major metallogenic epoch of tungsten-tin deposits in the Nanling region; the cassiterite-scheelite quartz vein type deposits formed in the Indo-Chinese Epoch. The authors also discussed the granite diagenesis and mineralization in the Indo-Chinese Epoch and the inherited features of the Mesozoic mineralization in the Nanling area.

关 键 词：^40AR/^39AR年代学 白云母 钨锡矿床 赣南 南岭 

分 类 号：P597.3[天文地球—地球化学]