DOI: 10.1038/ngeo2845
论文题名: Evidence for an early wet Moon from experimental crystallization of the lunar magma ocean
作者: Lin Y. ; Tronche E.J. ; Steenstra E.S. ; Van Westrenen W.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2017
卷: 10, 期: 1 起始页码: 14
结束页码: 18
语种: 英语
Scopus关键词: crustal thickness
; crystallization
; experimental study
; high pressure
; lunar phase
; Moon
; olivine
; plagioclase
; pyroxene
; solidification
; water content
英文摘要: The Moon is thought to have been covered initially by a deep magma ocean, its gradual solidification leading to the formation of the plagioclase-rich highland crust. We performed a high-pressure, high-temperature experimental study of lunar mineralogical and geochemical evolution during magma ocean solidification that yields constraints on the presence of water in the earliest lunar interior. In the experiments, a deep layer containing both olivine and pyroxene is formed in the first ∼450% of crystallization, β-quartz forms towards the end of crystallization, and the last per cent of magma remaining is extremely iron rich. In dry experiments, plagioclase appears after 68 vol.% solidification and yields a floatation crust with a thickness of ∼468 km, far above the observed average of 34-43 km based on lunar gravity. The volume of plagioclase formed during crystallization is significantly less in water-bearing experiments. Using the relationship between magma water content and the resulting crustal thickness in the experiments, and considering uncertainties in initial lunar magma ocean depth, we estimate that the Moon may have contained at least 270 to 1,650 ppm water at the time of magma ocean crystallization, suggesting the Earth-Moon system was water-rich from the start. © 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105862
Appears in Collections: 气候减缓与适应 科学计划与规划
There are no files associated with this item.
作者单位: Faculty of Earth and Life Sciences, VU Amsterdam, De Boelelaan 1085, Amsterdam, Netherlands
Recommended Citation:
Lin Y.,Tronche E.J.,Steenstra E.S.,et al. Evidence for an early wet Moon from experimental crystallization of the lunar magma ocean[J]. Nature Geoscience,2017-01-01,10(1)