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DOI	10.1038/s41561-019-0390-y
	Oceanic plateau formation by seafloor spreading implied by Tamu Massif magnetic anomalies
	Sager W.W.; Huang Y.; Tominaga M.; Greene J.A.; Nakanishi M.; Zhang J.
发表日期	2019
ISSN	17520894
卷号	12 期号:8
英文摘要	Tamu Massif is an immense Mesozoic submarine volcano, the main edifice of the Shatsky Rise oceanic plateau. It is located at a spreading ridge triple junction, but considered to be a shield volcano formed by effusive volcanism from an emerging mantle plume. However, it is unclear how Tamu Massif eruptions interacted with the spreading ridges, which are enormous linear volcanoes themselves. Here we create a magnetic anomaly map for Tamu Massif, which can provide clues about crustal formation. For Tamu Massif, we find dominantly linear magnetic field anomalies caused by crustal blocks of opposite magnetic polarity. This pattern suggests that Tamu Massif is not a shield volcano, but was emplaced by voluminous, focused ridge volcanism. If the magma source at the Shatsky Rise was a plume, it was closely connected to and controlled by seafloor spreading. By implication, even the largest oceanic plateau edifices can be formed by seafloor spreading. We suggest that the widely accepted analogy between continental flood basalts and oceanic plateaus requires reconsideration. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	magnetic anomaly; magnetic field; mantle plume; Mesozoic; oceanic crust; seafloor spreading; shield volcano; underwater environment; volcanic eruption; volcanism; Pacific Ocean; Shatsky Rise; Tamu
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/124629
作者单位	Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX, United States; Key Laboratory for Exploration Technologies for Oil and Gas Resources (Yangtze University), Ministry of Education, Wuhan, China; Department of Oceanography, Texas A&M University, College Station, TX, United States; Department of Geology and Geophysics, Texas A&M University, College Station, TX, United States; Graduate School of Science, Chiba University, Chiba, Japan; CAS Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
推荐引用方式 GB/T 7714	Sager W.W.,Huang Y.,Tominaga M.,et al. Oceanic plateau formation by seafloor spreading implied by Tamu Massif magnetic anomalies[J],2019,12(8).
APA	Sager W.W.,Huang Y.,Tominaga M.,Greene J.A.,Nakanishi M.,&Zhang J..(2019).Oceanic plateau formation by seafloor spreading implied by Tamu Massif magnetic anomalies.Nature Geoscience,12(8).
MLA	Sager W.W.,et al."Oceanic plateau formation by seafloor spreading implied by Tamu Massif magnetic anomalies".Nature Geoscience 12.8(2019).