摘要
西准噶尔塔(塔城)额(额敏)盆地东南缘骆驼脖子道班北铁斯克塔斯一带出露有灰色石英二长闪长岩岩体,前人在1∶20万额敏幅中,将其划分为华力西晚期第三侵入次岩体。1∶5万填图中,发现该岩体被下泥盆统马拉苏组不整合覆盖,在石英二长闪长岩中采集同位素测年样,获得SHRIMP锆石U-Pb年龄为(413±12)Ma,据此将该侵入岩体时代定为加里东晚期(志留纪)。
The southeast of Tacheng-Emin basin in the west Junggar outcrops gray quartz monzobiorite,the old studies divided it into the late Variscian third intrusive rock in the 1：200000 emin mapsheet,and in the 1：50000 geological map-ping,it is discovered that this rock mass is overlain unconformably by the lower Devonian malasu formation,acquired Zir-con SHRIMP U-Pb age（413＆#177;12）Ma by collect the isotopic dating sample,from this,confirm the age of this intrusive rock is the late Caledonian.
出处
《新疆地质》
CAS
CSCD
北大核心
2014年第4期441-444,共4页
Xinjiang Geology
