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DOI | 10.1029/2018GL077254 |
No Change in the Recent Lunar Impact Flux Required Based on Modeling of Impact Glass Spherule Age Distributions | |
Huang, Ya-Huei1; Minton, David A.1; Zellner, Nicolle E. B.2; Hirabayashi, Masatoshi3; Richardson, James E.4; Fassett, Caleb I.5 | |
2018-07-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:14页码:6805-6813 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The distributions of Ar-40/Ar-39-derived ages of impact glass spherules in lunar regolith samples show an excess at <500 Ma relative to older ages. It has not been well understood whether this excess of young ages reflects an increase in the recent lunar impact flux or is due to a bias in the samples. We developed a model to simulate the production, transport, destruction, and sampling of lunar glass spherules. A modeled bias is seen when either (1) the simulated sampling depth is 10 cm, consistent with the typical depth from which Apollo soil samples were taken, or (2) when glass occurrence in the ejecta is limited to >10 crater radii from the crater, consistent with terrestrial microtektite observations. We suggest that the observed excess of young ages for lunar impact glasses is likely due to limitations of the regolith sampling strategy of the Apollo program, rather than reflecting a change in the lunar impact rate. |
英文关键词 | impact glass spherules impact flux Moon Apollo samples numerical modeling |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000442582100007 |
WOS关键词 | LONG-TERM DECLINE ; MICROTEKTITES ; PROVENANCE ; EROSION ; EVENT ; RATES ; MELTS ; SEA |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/25756 |
专题 | 气候变化 |
作者单位 | 1.Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA; 2.Albion Coll, Dept Phys, Albion, MI 49224 USA; 3.Auburn Univ, Dept Aerosp Engn, Auburn, AL 36849 USA; 4.Planetary Sci Inst, Tucson, AZ USA; 5.NASA, Marshall Space Flight Ctr, Huntsville, AL USA |
推荐引用方式 GB/T 7714 | Huang, Ya-Huei,Minton, David A.,Zellner, Nicolle E. B.,et al. No Change in the Recent Lunar Impact Flux Required Based on Modeling of Impact Glass Spherule Age Distributions[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(14):6805-6813. |
APA | Huang, Ya-Huei,Minton, David A.,Zellner, Nicolle E. B.,Hirabayashi, Masatoshi,Richardson, James E.,&Fassett, Caleb I..(2018).No Change in the Recent Lunar Impact Flux Required Based on Modeling of Impact Glass Spherule Age Distributions.GEOPHYSICAL RESEARCH LETTERS,45(14),6805-6813. |
MLA | Huang, Ya-Huei,et al."No Change in the Recent Lunar Impact Flux Required Based on Modeling of Impact Glass Spherule Age Distributions".GEOPHYSICAL RESEARCH LETTERS 45.14(2018):6805-6813. |
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