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

极地研究 ›› 1991, Vol. 2 ›› Issue (1-English): 30-38.

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

Zheng Xiangshen, Liu Xiaohan

Laboratory of Lithosphere Tectonic Evolution Institute of Geology, Academia Sinica, P. O. Box 634, Beijing 100029

出版日期:1941-03-30 发布日期:1941-03-30
通讯作者: Zheng Xiangshen

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

Zheng Xiangshen, Liu Xiaohan

Laboratory of Lithosphere Tectonic Evolution Institute of Geology, Academia Sinica, P. O. Box 634, Beijing 100029

Online:1941-03-30 Published:1941-03-30
Contact: Zheng Xiangshen

摘要/Abstract

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.

关键词: Fildes Peninsula, Cenozoic volcanic rocks, Sr/Ca-Ba/Ca systematics

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.

Key words: Fildes Peninsula, Cenozoic volcanic rocks, Sr/Ca-Ba/Ca systematics

Zheng Xiangshen, Liu Xiaohan. SYSTEMATIC COVARIATION OF SR, BA, CA ELEMENTS IN CENOZOIC VOLCANIC ROCKS ON THE FILDES PENINSULA, WEST ANTARCTICA, AND ITS RELATION TO PEIROGENESIS[J]. 极地研究, 1991, 2(1-English): 30-38.

Zheng Xiangshen, Liu Xiaohan. SYSTEMATIC COVARIATION OF SR, BA, CA ELEMENTS IN CENOZOIC VOLCANIC ROCKS ON THE FILDES PENINSULA, WEST ANTARCTICA, AND ITS RELATION TO PETROGENESIS[J]. ADVANCES IN POLAR SCIENCE, 1991, 2(1-English): 30-38.

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