中国地质Issue(4)：1080-1091,12.
南蒙古哈拉莫里特锡钨矿成矿时代确定及其与北山地区成矿时代对比的意义
Metallogenic age of the Khar Morit W-Sn deposit in Gebi Tianshan of Mongolia and geological significance of its comparison with ore-forming age of Beishan area in China
摘要
Abstract
SHRIMP U-Pb data of zircons from the strongly greisenized granite at the Khar Morit W-Sn ore deposit in Gobi Tianshan of South Mongolia shows that the emplacement age of granite intrusion is (214 ± 3) Ma, which indicates that the W-Sn mineralization of the deposit took place during Triassic in Early Mesozoic. According to the comprehensive analysis of the data avialable, the authors hold that two episodes of W-Sn mineralization existed in Beishan area of China: one in Devonian and the other in Triassic. The metallogenic time of the Khar Morit W-Sn deposit in Mongolia’s Gobi Tianshan is coeval with that of the second W-Sn ore-forming event in Beishan, China. The spatial-temporal relationships between the tectonic evolution and the W-Sn mineralization suggest that the W-Sn ore deposits produced during the two metallogenic episodes all occurred in a collision to post-collision setting. The Devonian W-Sn ore deposits were related to the collisional event between the Dunhuang and Beishan blocks, which took place during Late Silurian-Early Devonian period, whereas the Triassic ones were likely related to the orogeny brought about by the final closure of the Paleo-Asian Ocean at about the end of Late Paleozoic.关键词
哈拉莫里特钨锡矿床/成矿时代/碰撞-碰撞后构造背景/蒙古戈壁天山/中国北山Key words
Khar Morit W-Sn deposit/metallogenic age/collisional-post-collisional setting/Gobi Tianshan in Mongolia/Beishan in China分类
天文与地球科学引用本文复制引用
李月明,Baatar Munkhtsengel,苗来成,Anaad Chimedtseren,朱明帅,杨顺虎..南蒙古哈拉莫里特锡钨矿成矿时代确定及其与北山地区成矿时代对比的意义[J].中国地质,2014,(4):1080-1091,12.基金项目
中国地质调查局项目（1212011120332、1212010561510、1212011120330）和科技部科技基础性工作专项（2012FY120100）联合资助。 （）
