气候变化领域集成服务门户(CCPortal): Global influence of mantle temperature and plate thickness on intraplate volcanism

CCPortal

DOI	10.1038/s41467-021-22323-9
	Global influence of mantle temperature and plate thickness on intraplate volcanism
	Ball P.W.; White N.J.; Maclennan J.; Stephenson S.N.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	The thermochemical structure of lithospheric and asthenospheric mantle exert primary controls on surface topography and volcanic activity. Volcanic rock compositions and mantle seismic velocities provide indirect observations of this structure. Here, we compile and analyze a global database of the distribution and composition of Neogene-Quaternary intraplate volcanic rocks. By integrating this database with seismic tomographic models, we show that intraplate volcanism is concentrated in regions characterized by slow upper mantle shear-wave velocities and by thin lithosphere (i.e. <100 km). We observe a negative correlation between shear-wave velocities at depths of 125–175 km and melt fractions inferred from volcanic rock compositions. Furthermore, mantle temperature and lithospheric thickness estimates obtained by geochemical modeling broadly agree with values determined from tomographic models that have been converted into temperature. Intraplate volcanism often occurs in regions where uplifted (but undeformed) marine sedimentary rocks are exposed. Regional elevation of these rocks can be generated by a combination of hotter asthenosphere and lithospheric thinning. Therefore, the distribution and composition of intraplate volcanic rocks through geologic time will help to probe past mantle conditions and surface processes. © 2021, The Author(s).
语种	英语
scopus关键词	asthenosphere; geochemistry; lithosphere; mantle; sedimentary rock; upper mantle; volcanic rock; volcanism; article; lithosphere; Neogene; thickness; velocity
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/251481
作者单位	Bullard Laboratories, Department of Earth Sciences, University of Cambridge, Madingley Rise, Cambridge, United Kingdom; Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia; Department of Earth Sciences, University of Oxford, Oxford, United Kingdom
推荐引用方式 GB/T 7714	Ball P.W.,White N.J.,Maclennan J.,et al. Global influence of mantle temperature and plate thickness on intraplate volcanism[J],2021,12(1).
APA	Ball P.W.,White N.J.,Maclennan J.,&Stephenson S.N..(2021).Global influence of mantle temperature and plate thickness on intraplate volcanism.Nature Communications,12(1).
MLA	Ball P.W.,et al."Global influence of mantle temperature and plate thickness on intraplate volcanism".Nature Communications 12.1(2021).