摘要
运用阴极发光和LA-ICP-MS U-Pb法对塔里木盆地塔中-巴楚地区岩浆岩中的锆石年龄进行了测试。结果显示,玄武岩年龄275±13Ma,凝灰岩年龄291±10Ma,辉长岩年龄274±15Ma,辉绿岩年龄272±6Ma,正长岩年龄282±3Ma,英安斑岩年龄286±4Ma,均属于早二叠世。
A combined study of CL imaging and LA-ICP-MS U-Pb dating was carried out for zircon grains of the magmatic rocks in the Tazhong-Bachu region from the Tarim basin, Western China. The results of the systematic zircon LA-ICP-MS U-Pb dating reveal 275 ± 13Ma for the basalt, 291 ± 10Ma for the tuff, 274 ±15Ma for the gabbro, 272 ±6Ma for the diabase, 282 ±3Ma for the syenite and 286 ±4Ma for the dacite-porphyry, respectively. It indicated that the magmatic rocks of the Tazhong-Bachu region were formed during early Permian.
出处
《岩石学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第5期1097-1107,共11页
Acta Petrologica Sinica
基金
国家自然科学基金(40572028)
西北大学大陆动力学教育部重点实验室资助
