Geochemistry and petrogenesis of Late Ladinian OIB-like basalts from Tabai, Yunnan Province, China

	Geochemistry and petrogenesis of Late Ladinian OIB-like basalts from Tabai, Yunnan Province, China
	ZHANG Jiawei; HUANG Zhilong; LUO Taiyi; QIAN Zhikuan; ZHANG Ying
	2013
发表期刊	Chinese Journal of Geochemistry
卷号	32 期号:4 页码:337-346
摘要	Major and trace elements analysis has been carried out on the Late Ladinian Tabai basalts from Yunnan Province with the aim of studying their petrogenesis. Their SiO2 contents range from 43.63 wt.% to 48.23 wt.%. The basalts belong to the weakly alkaline(average total alkalis Na2 O+K2O=3.59 wt.%), high-Ti(3.21 wt.% to 4.32 wt.%) magma series. The basalts are characterized by OIB-like trace elements patterns, which are enriched in large ion lithosphile elements(LILE) including Rb and Ba, and display negative K, Zr and Hf anomalies as shown on the spider diagrams. The Tabai basalts display light rare-earth elements(LREE) enrichment and are depleted in heavy rare-earth elements(HREE) on the REE pattern. Those dates indicate that the parental magma of the Tabai basalts was derived from low-degree(1%–5%) partial melting of garnet peridotite. The magma underwent olivine fractional crystallization and minor crustal contamination during their ascent. The Tabai basalts were related to a relaxation event which had triggered the Emeishan fossil plume head re-melting in the Middle Triassic.
学科领域	矿床地球化学
收录类别	EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/7119
专题	矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文矿床地球化学国家重点实验室
推荐引用方式 GB/T 7714	ZHANG Jiawei,HUANG Zhilong,LUO Taiyi,et al. Geochemistry and petrogenesis of Late Ladinian OIB-like basalts from Tabai, Yunnan Province, China[J]. Chinese Journal of Geochemistry,2013,32(4):337-346.
APA	ZHANG Jiawei,HUANG Zhilong,LUO Taiyi,QIAN Zhikuan,&ZHANG Ying.(2013).Geochemistry and petrogenesis of Late Ladinian OIB-like basalts from Tabai, Yunnan Province, China.Chinese Journal of Geochemistry,32(4),337-346.
MLA	ZHANG Jiawei,et al."Geochemistry and petrogenesis of Late Ladinian OIB-like basalts from Tabai, Yunnan Province, China".Chinese Journal of Geochemistry 32.4(2013):337-346.

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