气候变化领域集成服务门户(CCPortal): Mercury's Crustal Thickness Correlates With Lateral Variations in Mantle Melt Production

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DOI	10.1029/2020GL087261
	Mercury's Crustal Thickness Correlates With Lateral Variations in Mantle Melt Production
	Beuthe M.; Charlier B.; Namur O.; Rivoldini A.; Van Hoolst T.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:9
英文摘要	Over the first billion years of Mercury's history, mantle melting and surface volcanism produced a secondary magmatic crust varying spatially in composition and mineralogy. By combining geochemical mapping from MESSENGER with laboratory experiments on partial melting, we translate the surface mineralogy into lateral variations of surface density and calculate the degree of mantle melting required to produce surface rocks. If lateral density variations extend through the whole crust, the local crustal thickness correlates well with the degree of mantle melting. Low-degree mantle melting produced a thin crust below the northern volcanic plains (19±3 km), whereas high-degree melting produced the thickest crust in the ancient high-Mg region (50±12 km), refuting the hypothesis of an impact origin for that region. The thickness-melting correlation has also been observed for the oceanic crust on Earth and might be a common feature of secondary crust formation on terrestrial planets. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Exploratory geochemistry; Minerals; Structural geology; Crust formations; Crustal thickness; Density variations; Geochemical mapping; Laboratory experiments; Lateral variations; Surface mineralogy; Terrestrial planets; Melting; correlation; crust-mantle boundary; crustal thickness; Earth; hypothesis testing; laboratory method; mantle; mapping method; volcanism
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170399
作者单位	Royal Observatory of Belgium, Brussels, Belgium; Department of Geology, University of Liège, Sart Tilman, Belgium; Department of Earth and Environmental Sciences, KU Leuven, Leuven, Belgium; Institute of Astronomy, KU Leuven, Leuven, Belgium
推荐引用方式 GB/T 7714	Beuthe M.,Charlier B.,Namur O.,et al. Mercury's Crustal Thickness Correlates With Lateral Variations in Mantle Melt Production[J],2020,47(9).
APA	Beuthe M.,Charlier B.,Namur O.,Rivoldini A.,&Van Hoolst T..(2020).Mercury's Crustal Thickness Correlates With Lateral Variations in Mantle Melt Production.Geophysical Research Letters,47(9).
MLA	Beuthe M.,et al."Mercury's Crustal Thickness Correlates With Lateral Variations in Mantle Melt Production".Geophysical Research Letters 47.9(2020).