ISOTOPIC CHARACTERISTICS AND AGE DATING OF THE PUMICE IN OKINAWA TROUGH

IOCAS-IR > 海洋地质与环境重点实验室

	ISOTOPIC CHARACTERISTICS AND AGE DATING OF THE PUMICE IN OKINAWA TROUGH
	CHEN, LR; ZHAI, SK; SHEN, SX
	1994
发表期刊	SCIENCE IN CHINA SERIES B-CHEMISTRY
ISSN	1001-652X
卷号	37 期号:7 页码:870-878
摘要	The data on the isotope compositions of rubidium, strontium and oxygen in the pumice of Okinawa Trough are reported for the first time. The ages of the pumice were successfully dated with the method of U-series disequilibrium. Then, the material source, crystallization evolution of magma and activity cycles of volcanos are explored. Isotopic data show that pumice magma was originally from the mantle, but had undergone a full crystallization differentiation and had been contaminated to a fair extent by crust-derived materials before the magma was erupted out of the sea floor. According to the dating results available so far, the earliest volcanic eruption in Okinawa Trough occurred about 70,000 a ago and the latest eruption was about 10,000 a B.P. During this period, there were three volcanic eruption cycles which were respectively corresponding to the middle Late Pleistocene, the late Late Pleistocene and the Early Holocene.
学科领域	Chemistry, Multidisciplinary
收录类别	sci
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/3856
专题	海洋地质与环境重点实验室
推荐引用方式 GB/T 7714	CHEN, LR,ZHAI, SK,SHEN, SX. ISOTOPIC CHARACTERISTICS AND AGE DATING OF THE PUMICE IN OKINAWA TROUGH[J]. SCIENCE IN CHINA SERIES B-CHEMISTRY,1994,37(7):870-878.
APA	CHEN, LR,ZHAI, SK,&SHEN, SX.(1994).ISOTOPIC CHARACTERISTICS AND AGE DATING OF THE PUMICE IN OKINAWA TROUGH.SCIENCE IN CHINA SERIES B-CHEMISTRY,37(7),870-878.
MLA	CHEN, LR,et al."ISOTOPIC CHARACTERISTICS AND AGE DATING OF THE PUMICE IN OKINAWA TROUGH".SCIENCE IN CHINA SERIES B-CHEMISTRY 37.7(1994):870-878.

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