黑龙江科技大学学报2017，Vol.27Issue(1)：46-50,5.DOI:10.3969/j.issn.2095-7262.2017.01.010
大兴安岭北段克-河地区满克头鄂博组流纹岩的年代及地球化学特征
Chronology and geochemistry of rhyolites in Manketou'ebo Formation from Keyihe area,north-central Greater Xing'an Range
王春宇 1王东彬 1屈嘉骥2
作者信息
- 1. 黑龙江科技大学 矿业工程学院, 哈尔滨 150022
- 2. 黑龙江石宝科技有限公司, 哈尔滨 150030
- 折叠
摘要
Abstract
This paper is a study on the chronology and geochemistry of the rhyolites in Manketou'ebo Formation as a way to determine the Manketou'ebo Formation time and tectonic environment of Keyihe area in north-central Greater Xing'an Range.The study of chronology uses U-Pb method and the study of geochemistry, defined as the test of Major, rare and trace elements of rhyolites samples, can determine the tectonic setting by the data analysis.The study reveals that the Manketou'ebo rhyolites is classified as a high-K low-Al type in calc-alkaline series, ranging in age between 132.20±0.49 Ma,which is the early Cretaceous rather than late Jurassic, as previously thought;the formation of the rhyolites in Manketou'ebo Formation is probably closely associated with the lithosphere extension after the closure of Mongol-Okhotsk Ocean.关键词
U-Pb年龄/满克头鄂博组/流纹岩/克-河/大兴安岭Key words
U-Pb age/Manketou'ebo formation/Rhyolites/Keyihe/Greater Xing'an range分类
天文与地球科学引用本文复制引用
王春宇,王东彬,屈嘉骥..大兴安岭北段克-河地区满克头鄂博组流纹岩的年代及地球化学特征[J].黑龙江科技大学学报,2017,27(1):46-50,5.
