Geomagnetic field intensity determination from Pleistocene trachytic lava flows in Jeju Geopark

doi:10.1002/2013GC005028

	Geomagnetic field intensity determination from Pleistocene trachytic lava flows in Jeju Geopark
	Jeong, Doohee 1; Yu, Yongjae 1; Liu, Qingsong 2; Jiang, Zhaoxia2 ; Koh, Gi Won 3; Koh, Dong-Chan 4
刊名	GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
	2014-03-01
卷号	15 期号:3 页码:516-529
关键词	paleointensity Jeju Geopark trachytic lava Pleistocene magnetite
ISSN号	1525-2027
DOI	10.1002/2013GC005028
文献子类	Article
英文摘要	A composite of 28 trachytic lava flows were recovered from the Jeju Geopark Drilling Project (JGDP) in Jeju Geopark, one of the new seven wonders of Nature declared by UNESCO in 2011. Each trachytic lava flow has a tendency to increase in magnetic grain size from the rapidly cooled brecciated margin and vesicle streaked zone downward into the massive crystalline flow interiors. The brecciated margin and vesicle streaked zone of individual trachytic lava flow contains exclusively fine-grained magnetite as inclusions in plagioclase. High-fidelity paleointensity determinations were obtained from 26 (out of 224 examined) samples from JGDP cores. Temporal variation of virtual axial dipole moments (VADMs) calculated from the absolute paleointensity estimates follows the trend of sint-800 data for the interval from similar to 80 to similar to 360 ka. High VADM from flow 21 possibly represents real intensity peak, as previously recognized high VADM in Japan at similar to 336 ka, in Trans-Mexican volcanism similar to 339, and in Hawaii similar to 340-350 ka. Perhaps such a strong magnetic intensity near similar to 325-350 ka might be smoothed out in relative paleointensity records.
WOS关键词	PALEOMAGNETIC INCLINATION DATA ; EARTHS MAGNETIC-FIELD ; CURVE FORC DIAGRAMS ; PYROCLASTIC SURGES ; CRYSTAL-GROWTH ; BIG ISLAND ; GRAIN-SIZE ; PALEOINTENSITY ; PLAGIOCLASE ; KOREA
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000336232600002
资助机构	National Research Foundation of Korea (NRF) - Korea government (MSIP)(NRF-2013R1A2A1A01004418) ; National Research Foundation of Korea (NRF) - Korea government (MSIP)(NRF-2013R1A2A1A01004418) ; Korea Meteorological Administration Research and Development Program(CATER-2013-8070) ; Korea Meteorological Administration Research and Development Program(CATER-2013-8070) ; National Research Foundation of Korea (NRF) - Korea government (MSIP)(NRF-2013R1A2A1A01004418) ; National Research Foundation of Korea (NRF) - Korea government (MSIP)(NRF-2013R1A2A1A01004418) ; Korea Meteorological Administration Research and Development Program(CATER-2013-8070) ; Korea Meteorological Administration Research and Development Program(CATER-2013-8070) ; National Research Foundation of Korea (NRF) - Korea government (MSIP)(NRF-2013R1A2A1A01004418) ; National Research Foundation of Korea (NRF) - Korea government (MSIP)(NRF-2013R1A2A1A01004418) ; Korea Meteorological Administration Research and Development Program(CATER-2013-8070) ; Korea Meteorological Administration Research and Development Program(CATER-2013-8070) ; National Research Foundation of Korea (NRF) - Korea government (MSIP)(NRF-2013R1A2A1A01004418) ; National Research Foundation of Korea (NRF) - Korea government (MSIP)(NRF-2013R1A2A1A01004418) ; Korea Meteorological Administration Research and Development Program(CATER-2013-8070) ; Korea Meteorological Administration Research and Development Program(CATER-2013-8070)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/85853]
专题	中国科学院地质与地球物理研究所
通讯作者	Jeong, Doohee
作者单位	1.Chungnam Natl Univ, Dept Geol & Earth Environm Sci, Taejon 305764, South Korea 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 3.Jeju Special Self Governing Prov Dev Corp, Water Ind Res Ctr, Cheju, South Korea 4.Korea Inst Geosci & Mineral Resources, Taejon, South Korea
推荐引用方式 GB/T 7714	Jeong, Doohee,Yu, Yongjae,Liu, Qingsong,et al. Geomagnetic field intensity determination from Pleistocene trachytic lava flows in Jeju Geopark[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2014,15(3):516-529.
APA	Jeong, Doohee,Yu, Yongjae,Liu, Qingsong,Jiang, Zhaoxia,Koh, Gi Won,&Koh, Dong-Chan.(2014).Geomagnetic field intensity determination from Pleistocene trachytic lava flows in Jeju Geopark.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,15(3),516-529.
MLA	Jeong, Doohee,et al."Geomagnetic field intensity determination from Pleistocene trachytic lava flows in Jeju Geopark".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 15.3(2014):516-529.