气候变化领域集成服务门户(CCPortal): Stratigraphy of Ice and Ejecta Deposits at the Lunar Poles

CCPortal

DOI	10.1029/2020GL088920
	Stratigraphy of Ice and Ejecta Deposits at the Lunar Poles
	Cannon K.M.; Deutsch A.N.; Head J.W.; Britt D.T.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:21
英文摘要	Water ice has been delivered to the lunar poles from different sources over billions of years, but this accumulation was punctuated by large impacts that excavated dry regolith from depth and emplaced it in layers over the poles. Here, we model the resulting stratigraphies of ice and ejecta deposits in the lunar polar regions. Large polar craters were age dated, and their ejecta distributions calculated with standard scaling relations. We then created a Monte Carlo model for ice deposition and ejecta emplacement. Typical model runs showed that deposits in older cold traps (>4 Ga) are divided into two zones: buried ice-rich gigaton deposits and younger more gardened mantles. The latter are consistent with small crater morphometry measurements, but the existence of substantial ice buried at great depths is more difficult to confirm. Rare outlier model runs included Mercury-like cases with significant deposition events in recent history (<200 Ma). ©2020. The Authors.
英文关键词	Deposits; Moon; Poles; Stratigraphy; Cold traps; Great depth; Lunar polar regions; Monte Carlo model; Morphometry; Polar craters; Scaling relations; Typical model; Ice; crater; ejecta; lunar crust; morphometry; regolith; stratigraphy
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/169487
作者单位	Department of Geology and Geological Engineering, Colorado School of Mines, Golden, CO, United States; Space Resources Program, Colorado School of Mines, Golden, CO, United States; Now at NASA Ames Research Center, Mountain View, CA, United States; Department of Earth, Environmental and Planetary Sciences, Brown University, Providence, RI, United States; Department of Physics, University of Central Florida, Orlando, FL, United States
推荐引用方式 GB/T 7714	Cannon K.M.,Deutsch A.N.,Head J.W.,et al. Stratigraphy of Ice and Ejecta Deposits at the Lunar Poles[J],2020,47(21).
APA	Cannon K.M.,Deutsch A.N.,Head J.W.,&Britt D.T..(2020).Stratigraphy of Ice and Ejecta Deposits at the Lunar Poles.Geophysical Research Letters,47(21).
MLA	Cannon K.M.,et al."Stratigraphy of Ice and Ejecta Deposits at the Lunar Poles".Geophysical Research Letters 47.21(2020).