DOI: 10.1038/ngeo2252
论文题名: Evidence for basaltic volcanism on the Moon within the past 100 million years
作者: Braden S.E. ; Stopar J.D. ; Robinson M.S. ; Lawrence S.J. ; Van Der Bogert C.H. ; Hiesinger H.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2014
卷: 7, 期: 11 起始页码: 787
结束页码: 791
语种: 英语
Scopus关键词: basalt
; color
; crystallization
; digital terrain model
; estimation method
; magmatism
; Moon
; thermal evolution
; volcanic eruption
英文摘要: The bulk of basaltic magmatism on the Moon occurred from 3.9 to 3.1 billion years ago on the ancient lunar mare plains1. There is evidence for basaltic volcanism as recently as 2.9 billion years ago from crystallization ages2 and a billion years ago from stratigraphy3,4. An enigmatic surface formation named Ina (18.65° N, 5.30° E) may represent much younger mare volcanism, but age estimates are poorly constrained5-8. Here we investigate 70 small topographic anomalies, termed irregular mare patches (100-5,000m maximum dimension), on the lunar nearside with irregular morphologies and textures similar to Ina, using Lunar Reconnaissance Orbiter narrow angle camera images9, digital terrain models and wide angle camera colour ratios. The irregular mare patches exhibit sharp, metre-scale morphology with relatively fewsuperposed impact craters larger than ten metres in diameter. Crater distributions from the three largest irregular mare patches imply ages younger than 100 million years, based on chronology models of the lunar surface10,11. The morphology of the features is also consistent with small basaltic eruptions that occurred significantly after the established cessation of lunar mare basaltic volcanism. Such late-stage eruptions suggest a long decline of lunar volcanism and constrain models of the Moon's thermal evolution. © 2014 Macmillan Publishers Limited. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106384
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: School of Earth and Space Exploration, Arizona State University, 1100 S. Cady Mall, Interdisciplinary A, Tempe, Arizona, United States; Institut für Planetologie, WestfälischeWilhelms-Universität Münster, Wilhelm-Klemm-Str. 10, D-Münster, Germany
Recommended Citation:
Braden S.E.,Stopar J.D.,Robinson M.S.,et al. Evidence for basaltic volcanism on the Moon within the past 100 million years[J]. Nature Geoscience,2014-01-01,7(11)