LA-ICP-MS U-Pb Ages and Geological Implications of the Habahe Pluton at the Southern Margin of Altay, Xinjiang
详细信息
- 责任者：Li Yong (Key Laboratory for Geodynamic Processes and Metallogenic Prognosis of the Central Asian Orogenic Belt ; Xinjiang University ; Urumqi 830049 ; China) ; Zhou Gang
- 刊名：Xinjiang Geology
- 出版年：2012
- 卷期：30(2)
- 关键词：二长花岗岩 ; monzogranite ; SHRIMP定年 ; SHRIMP dating ; 阿尔泰山 ; Altai Mountains
- 页码：p.146-151
- 图表：3 illus., 1 table, 34 refs.
- 分类号：0801
- issnNo：ISSN1000-8845
- isbnNo：CN65-1092/P
摘要
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/38U 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 southern margin of the Altay orogenic belt related to an active continental margin.