Volcanic structure of the Tarim flood basalt revealed through 3-D   seismological imaging

doi:10.1007/s11434-015-0866-0

CORC > 北京大学 > 地球与空间科学学院

	Volcanic structure of the Tarim flood basalt revealed through 3-D seismological imaging
	Wang, Lei ; Tian, Wei ; Shi, Yongmin ; Guan, Ping
刊名	SCIENCE BULLETIN
	2015
关键词	Tarim flood basalt 3-D seismic imaging Central volcano Lava lobe Plumbing system Eruption style LAVA FLOWS MANTLE PLUME CHINA PROVINCES EVOLUTION LENGTHS
DOI	10.1007/s11434-015-0866-0
英文摘要	The detailed structures of the volcanic edifice and plumbing system of the early Permian Tarim flood basalt were investigated by three-dimensional seismic imaging. The images show that the Tarim flood basalt erupted from central volcanoes distributed along major faults. The uppermost magma formed a single lava lobe with a volume of similar to 0.74 km(3) and an aspect ratio of 50, implying a sheet flow eruption with a high effusion rate. At the subsurface level, all central volcanoes, irrespective of size, had a separate pipe-like feeder vent. Only thirteen dikes were identified at shallow depths of < 100 m below the lava surface; deeper dikes were even rarer. The pipe-like plumbing system and the paucity of dilational dikes were different from the typical plumbing system of flood basalt provinces on Earth, which are normally buoyancy-controlled dike-sill networks. A gas-driven vigorous eruption can be inferred from the imaged structure, which means that the Tarim flood basalt may have carried and released a large proportion of volcanic gas, similar to some mafic volcaniclastic deposit-bearing continental flood basalt provinces.; National Basic Research Program of China [2010CB808906]; National Natural Science Foundation of China [41272368]; SCI(E); 中国科学引文数据库(CSCD); ARTICLE; davidtian@pku.edu.cn; 16; 1448-1456; 60
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/414067]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Wang, Lei,Tian, Wei,Shi, Yongmin,et al. Volcanic structure of the Tarim flood basalt revealed through 3-D seismological imaging[J]. SCIENCE BULLETIN,2015.
APA	Wang, Lei,Tian, Wei,Shi, Yongmin,&Guan, Ping.(2015).Volcanic structure of the Tarim flood basalt revealed through 3-D seismological imaging.SCIENCE BULLETIN.
MLA	Wang, Lei,et al."Volcanic structure of the Tarim flood basalt revealed through 3-D seismological imaging".SCIENCE BULLETIN (2015).