摘要
哈巴河岩体位于新疆阿尔泰造山带南缘阿舍勒火山沉积盆地东侧,为基性-中性-酸性岩组成的复式岩体。为了解该岩体形成时代,采用LA-ICP-MS锆石U-Pb法测年,获得二长花岗岩结晶年龄为(406.3±2.1)Ma。结合前人研究成果认为,该岩体形成于阿尔泰造山带岩浆活动高峰时期,形成于火山弧环境。
Habahe plutons, in the east of Ashele volcano-sedimentary basin,are located at the southern margin of the altay orogenic belt,which are composed of basic intrusion-intermediate intrusion-acid intrusion.LA-ICP-MS U-Pb zircon analyses from monzogranite yield weighted mean 206pb/E38u ages of 406.3±2.1 Ma,which can be interpreted as the crystallization age of the monzogranite.These intrusions are generated at the early Devonian,which is a period with intense magma activity at the southem margin of the Altay orogenic belt related to an active continental margin.
出处
《新疆地质》
CAS
CSCD
北大核心
2012年第2期146-151,共6页
Xinjiang Geology
