Constraints on volatile concentrations of pre-eruptive lunar magma

	Constraints on volatile concentrations of pre-eruptive lunar magma
	Yingkui Xu; Dan Zhu; Shijie Wang
	2014
发表期刊	Physics of the Earth and Planetary Interiors
卷号	229 期号:1 页码:55-60
摘要	Until recently, the Moon had long been thought to be depleted of volatiles such as H2O, S, COx and Cl-2. Researchers have recently measured volatile concentrations in the minerals, glasses and inclusions of lunar samples, and the results show that lunar rocks contain volatiles that are more similar to terrestrial materials than was previously thought. Mare basalts are located on the Earth-facing hemisphere in large impact basins, and they are not representative of the feldspathic highlands. Thus, it is likely that the density of lunar mafic magma exceeds that of the highland rocks based on buoyancy alone. According to this observational fact, we calculate the density of mare basalt to give a constraint for the maximum amount of water mare basalt can contain because water can effectively decrease the density of mare magma. Our result shows that water contained in the pre-eruptive magma could not have been more than 1000 ppm; otherwise, the density of very-low-Ti basaltic magma would be less than that of the highland rocks. Additionally, if magma contains other species of volatiles such as C-O, S, F, or Cl-2, the water in the pre-eruptive magma would have to be much less than 1000 ppm because volatiles such as CO2 can effectively decrease the solubility of water in silicate melts. Based on these calculations on densities and a comparison with water in MORB, we conclude that the moon's water is not as great as has been recently suggested.
关键词	The Moon Volatile Concentration Maximum Value Of The Water Pre-eruptive Magma Feldspathic Highland
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/5225
专题	矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文
推荐引用方式 GB/T 7714	Yingkui Xu,Dan Zhu,Shijie Wang. Constraints on volatile concentrations of pre-eruptive lunar magma[J]. Physics of the Earth and Planetary Interiors,2014,229(1):55-60.
APA	Yingkui Xu,Dan Zhu,&Shijie Wang.(2014).Constraints on volatile concentrations of pre-eruptive lunar magma.Physics of the Earth and Planetary Interiors,229(1),55-60.
MLA	Yingkui Xu,et al."Constraints on volatile concentrations of pre-eruptive lunar magma".Physics of the Earth and Planetary Interiors 229.1(2014):55-60.

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