地质通报Issue(4)：769-779,11.
泰国西部比洛克（Pilok）锡钨矿区二长花岗岩SHRIMP锆石U-Pb年龄及其地质意义
摘要
Abstract
The Pilok tin-tungsten mining area is located in the central segment of the west granite belt in Southeast Asia, western Thailand. The precise dating of the granites from the mining area is very important for deep understanding of the crystallization time and tectonic background of this granite belt as well as the regional magmatism-mineralization. The new SHRIMP U-Pb dating re⁃sults of magmatic zircons in two monzogranite samples from the Pilok tin-tungsten mining area of western Thailand show that their crystallization ages are 181.7±4.8Ma and 175.3±3.3Ma respectively, belonging to the Toarcian period of early Jurassic. Geochemical analyses reveal that the monzogranites are of the high-K calc-alkaline and peraluminous S-type. Combined with regional geological setting, the authors hold that the monzogranites in Pilok mining area should be the products of the Bangonghu-Nujiang-Mogok oceanic crust which subducted beneath the west Tengchong-Tanintharyi continental block.关键词
SHRIMP锆石U-Pb年龄/早侏罗世/比洛克/泰国/东南亚Key words
SHRIMP zircon U-Pb dasting/Early Jurassic/Pilok/Thailand/Southeast Asia分类
天文与地球科学引用本文复制引用
施美凤,林方成,范文玉,王宏,丛峰,朱华平..泰国西部比洛克（Pilok）锡钨矿区二长花岗岩SHRIMP锆石U-Pb年龄及其地质意义[J].地质通报,2015,(4):769-779,11.基金项目
中国地质调查项目 （）
