中国地质2016，Vol.43Issue(5)：1729-1736,8.DOI:10.12029/gc20160521
新疆卡拉麦里清水东斜长花岗岩的锆石U-Pb年龄及地质意义
Zircon U-Pb age of the east Qingshui plagiogranite in Kalamaili belt of Xinjiang and its geological implications
摘要
Abstract
The age and genesis of plagiogranite in Karamaili ophiolitic melange of Xinjiang are still in controversy. In this study, the geochemical characteristics and LA−ICP−MS zircon U−Pb ages of the plagiogranite were determined. It is found that the rare earth and trace element characteristics of plagiogranite in east Qingshui are different from those of plagiogranite and cumulate gabbro in ophiolite, but are similar to those of massive gabbro. The geochemical characteristics of plagiogranite in east Qingshui and massive gabbro also show partial melting trend. The age of plagiogranite in east Qingshui is(342.0±3.8)Ma, suggesting that it was probably the product of post-collisional tectono−thermal event in early Carboniferous rather than the leucocrate in ophiolite.关键词
锆石U-Pb年龄/斜长花岗岩/清水东/卡拉麦里/新疆Key words
zircon U-Pb ages/plagiogranite/east Qingshui/Karamaili/Xinjiang分类
天文与地球科学引用本文复制引用
聂晓勇,刘家军,苏大勇,章享云..新疆卡拉麦里清水东斜长花岗岩的锆石U-Pb年龄及地质意义[J].中国地质,2016,43(5):1729-1736,8.基金项目
中国地质调查局项目(12120114009101)资助。 （12120114009101）
