登录 | 注册 | 中文  | English  | 用时: 0.59s
元数据
高级检索
首页 > 中国极地考察知识库 > 成果信息库 > 已审查 SYSTEMATIC COVARIATION OF SR, BA, CA ELEMENTS IN CENOZOIC VOLCANIC ROCKS ON THE FILDES PENINSULA, WEST ANTARCTICA, AND ITS RELATION TO PEIROGENESIS

SYSTEMATIC COVARIATION OF SR, BA, CA ELEMENTS IN CENOZOIC VOLCANIC ROCKS ON THE FILDES PENINSULA, WEST ANTARCTICA, AND ITS RELATION TO PEIROGENESIS

【标题】SYSTEMATIC COVARIATION OF SR, BA, CA ELEMENTS IN CENOZOIC VOLCANIC ROCKS ON THE FILDES PENINSULA, WEST ANTARCTICA, AND ITS RELATION TO PEIROGENESIS

【Title】SYSTEMATIC COVARIATION OF SR, BA, CA ELEMENTS IN CENOZOIC VOLCANIC ROCKS ON THE FILDES PENINSULA, WEST ANTARCTICA, AND ITS RELATION TO PETROGENESIS

【作者】 郑祥身; 刘小汉

【Author】 Zheng Xiangshen ; Liu Xiaohan

【期刊】极地研究

【Journal】

【期刊年份】1991

【卷】2

【期】

【关键词】 Fildes Peninsula; Cenozoic volcanic rocks; Sr/Ca-Ba/Ca systematics

【Keywords】 Fildes Peninsula; Cenozoic volcanic rocks; Sr/Ca-Ba/Ca systematics

【摘要】Cenozoic volcanic rocks in the Fildes Peninsula are composed of High-Al basalt, basaltlc andesite, andesite, and dacite belonging to a calc-alkaline volcanic series with low-K and high-A1 characteristics. Using a new indicator, the Sr/Ca-Ba/Ca, systematics proposed by Onuma (1980, 1981) and Sr, Ba, Ca concentrations in volcanic lavas and subvolcanic rocks, the authors find that the high-A1 basaltic volcanic rocks either in volcanic strata or in subvolcanic intrusives were formed from a primary magma, in different stages through the fractional crystallization of clinopyro-xene(Cpx)and plagioclase (P1) in the process of magmatic evolution, resulting in the formation of basaltic-andesitic, andesitic and dacitic rocks.

【Abstract】Cenozoic volcanic rocks in the Fildes Peninsula are composed of High-Al basalt, basaltfc andesite, andesite, and dacite belonging to a calc-alkaline volcanic series with low-K and high-Al characteristics. Using a new indicator, the Sr / Ca-Ba / Ca, systematics proposed by Onuma (1980, 1981) and Sr, Ba, Ca concentrations in volcanic lavas and subvolcanic rocks, the authors find that the high-Al basaltic volcanic rocks either in volcanic strata or in subvolcanic intrusives were formed from a primary magma, in different stages through the fractional crystallization of clinopyro-xene(Cpx)and plagioclase (P1) in the process of magmatic evolution, resulting in the formation of basaltic-andesitic, andesitic and dacitic rocks.

【基金/项目】

【下载】 PDF(2.2 MB)