气候变化领域集成服务门户(CCPortal): Rethinking Lunar Mare Basalt Regolith Formation: New Concepts of Lava Flow Protolith and Evolution of Regolith Thickness and Internal Structure

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DOI	10.1029/2020GL088334
	Rethinking Lunar Mare Basalt Regolith Formation: New Concepts of Lava Flow Protolith and Evolution of Regolith Thickness and Internal Structure
	Head J.W.; Wilson L.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:20
英文摘要	Lunar mare regolith is traditionally thought to have formed by impact bombardment of newly emplaced coherent solidified basaltic lava. We use new models for initial emplacement of basalt magma to predict and map out thicknesses, surface topographies and internal structures of the fresh lava flows, and pyroclastic deposits that form the lunar mare regolith parent rock, or protolith. The range of basaltic eruption types produce widely varying initial conditions for regolith protolith, including (1) autoregolith, a fragmental meter-thick surface deposit that forms upon eruption and mimics impact-generated regolith in physical properties, (2) lava flows with significant near-surface vesicularity and macroporosity, (3) magmatic foams, and (4) dense, vesicle-poor flows. Each protolith has important implications for the subsequent growth, maturation, and regional variability of regolith deposits, suggesting wide spatial variations in the properties and thickness of regolith of similar age. Regolith may thus provide key insights into mare basalt protolith and its mode of emplacement. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Deposits; Moon; Basaltic eruptions; Initial conditions; Internal structure; Macro-porosity; Pyroclastic deposits; Regional variability; Spatial variations; Surface deposits; Basalt; basalt; lava flow; mare basalt; physical property; protolith; pyroclastic deposit; regolith; volcanic eruption
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/169561
作者单位	Department of Earth, Environmental and Planetary Science, Brown University, Providence, RI, United States; Lancaster Environment Centre, Lancaster University, Lancaster, United Kingdom
推荐引用方式 GB/T 7714	Head J.W.,Wilson L.. Rethinking Lunar Mare Basalt Regolith Formation: New Concepts of Lava Flow Protolith and Evolution of Regolith Thickness and Internal Structure[J],2020,47(20).
APA	Head J.W.,&Wilson L..(2020).Rethinking Lunar Mare Basalt Regolith Formation: New Concepts of Lava Flow Protolith and Evolution of Regolith Thickness and Internal Structure.Geophysical Research Letters,47(20).
MLA	Head J.W.,et al."Rethinking Lunar Mare Basalt Regolith Formation: New Concepts of Lava Flow Protolith and Evolution of Regolith Thickness and Internal Structure".Geophysical Research Letters 47.20(2020).