U-series zircon age constraints on the plumbing system and magma residence times of the Changbai volcano, China/North Korea border

doi:10.1016/j.lithos.2014.04.020

	U-series zircon age constraints on the plumbing system and magma residence times of the Changbai volcano, China/North Korea border
	Zou, Haibo 1; Fan, Qicheng 2; Zhang, Hongfu 3; Schmitt, Axel K.4
刊名	LITHOS
	2014-07-01
卷号	200 页码:169-180
关键词	Changbai volcano Young zircons U-series disequilibrium Magma plumbing system Magma residence times
ISSN号	0024-4937
DOI	10.1016/j.lithos.2014.04.020
文献子类	Article
英文摘要	The Changbai (or Baitoushan, Paektu) volcano on the China/North Korea border is best known for its climactic caldera-forming eruption of 100 km(3) of comendite materials 1000 years (1 ka) ago. The polygenetic Changbai volcano also erupted moderate-volume pre-caldera comendite lava at similar to 4 ka and small-volume post-caldera trachyte ignimbrite at similar to 0.3 ka. Here we report U-238-Th-230 disequilibrium ages of zircons from lavas and ignimbrites of the pre-caldera (similar to 4 ka), syn-caldera (1 ka), and post-caldera (similar to 0.3 ka) events. The zircon isochron ages are 12.2 +/- 1.1 ka (2 sigma) for the 4-ka comendite lava and 12.2 +/- 1.7 ka for the 1-ka comendite ignimbrite. Zircons from the 0.3-ka trachyte ignimbrite exhibit 3 respective peaks at 2.6 +/- 1.8 ka, 130 +/- 10 ka and >230 ka. The indistinguishable zircon ages for the 4-ka pre-caldera eruption of comendite lava and the 1-ka caldera-forming eruption of comendite pumice and ignimbrite suggest that the 4-ka lava provides an early sampling of a much larger magma body at depth and thus serves as a kind of petrologic early-warning signal. In addition, the 4-ka lava may represent the lowest-temperature magma in the roof zone of a thermally zoned magma chamber that usually escapes first. The distinctive multi-modal zircon age distributions of the 0.3-ka trachytic eruption, however, reveal that this post-caldera eruption tapped a different magma body and indicate that Changbai's magmatic plumbing system had changed after the 1-ka caldera-forming climactic eruption. Our results suggest very short zircon and magma residence times for the Changbai volcano (8 kyr for the 4-ka eruption, 11-12 kyr for the 1-ka eruption and 2.3 kyr for the 0.3-ka eruption). (C) 2014 Elsevier B.V. All rights reserved.
WOS关键词	TIANCHI VOLCANO ; NORTHEAST CHINA ; LONG VALLEY ; NEW-ZEALAND ; TRACE-ELEMENT ; MAJOR-ELEMENT ; CRATER LAKE ; JAPAN SEA ; TH-PB ; ERUPTION
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000338810700012
资助机构	US NSF(EAR-1119077) ; US NSF(EAR-1119077) ; NSF Earth Sciences Instrumentation and Facility program ; NSF Earth Sciences Instrumentation and Facility program ; US NSF(EAR-1119077) ; US NSF(EAR-1119077) ; NSF Earth Sciences Instrumentation and Facility program ; NSF Earth Sciences Instrumentation and Facility program ; US NSF(EAR-1119077) ; US NSF(EAR-1119077) ; NSF Earth Sciences Instrumentation and Facility program ; NSF Earth Sciences Instrumentation and Facility program ; US NSF(EAR-1119077) ; US NSF(EAR-1119077) ; NSF Earth Sciences Instrumentation and Facility program ; NSF Earth Sciences Instrumentation and Facility program
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/86422]
专题	中国科学院地质与地球物理研究所
通讯作者	Zou, Haibo
作者单位	1.Auburn Univ, Dept Geol & Geog, Auburn, AL 36849 USA 2.China Earthquake Adm, Inst Geol, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 4.Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90095 USA
推荐引用方式 GB/T 7714	Zou, Haibo,Fan, Qicheng,Zhang, Hongfu,et al. U-series zircon age constraints on the plumbing system and magma residence times of the Changbai volcano, China/North Korea border[J]. LITHOS,2014,200:169-180.
APA	Zou, Haibo,Fan, Qicheng,Zhang, Hongfu,&Schmitt, Axel K..(2014).U-series zircon age constraints on the plumbing system and magma residence times of the Changbai volcano, China/North Korea border.LITHOS,200,169-180.
MLA	Zou, Haibo,et al."U-series zircon age constraints on the plumbing system and magma residence times of the Changbai volcano, China/North Korea border".LITHOS 200(2014):169-180.