DOI: 10.1002/2014GL059478
论文题名: Geologic structure generated by large-impact basin formation observed at the South Pole-Aitken basin on the Moon
作者: Ohtake M. ; Uemoto K. ; Yokota Y. ; Morota T. ; Yamamoto S. ; Nakamura R. ; Haruyama J. ; Iwata T. ; Matsunaga T. ; Ishihara Y.
刊名: Geophysical Research Letters
ISSN: 0094-10137
EISSN: 1944-9868
出版年: 2014
卷: 41, 期: 8 起始页码: 2738
结束页码: 2745
语种: 英语
英文关键词: composition
; cratering
; Kaguya
; Moon
; SELENE
; South Pole-Aitken
Scopus关键词: Chemical analysis
; Lakes
; Lunar missions
; Moon
; Silicate minerals
; Stratigraphy
; cratering
; Critical constraints
; High spatial resolution
; Kaguya
; Reflectance spectrum
; SELENE
; South Pole-Aitken
; South Pole-Aitken basins
; Poles
; chemical composition
; impact structure
; lunar crust
; lunar mantle
; mantle chemistry
; melt
; mineralogy
; Moon
英文摘要: The South Pole-Aitken (SPA) basin is the largest clearly recognized basin on the lunar surface. Determining the composition and structure of the SPA basin interior provides critical constraints on the deep crustal and/or mantle composition of the Moon and improves our understanding of large-basin-forming impact processes. Here we present a new mineralogical map of the SPA basin interior, based on high-spatial-resolution reflectance spectra using the SELENE (Kaguya) multiband imager, which is combined with topographic data in order to interpret the geologic context. The derived mineralogical map suggests extensive distribution of ejected low-Ca pyroxene-dominant mantle material with the presence of purest anorthosite crustal materials surrounding a possible melt pool of 0.26 to 0.33 of the basin diameter near the basin center, which is significantly smaller than that suggested by the crater-scaling law. The absence of clear evidence of lower crustal material is consistent with recent impact simulation results. Key Points Stratigraphy of the lunar mantle was revealed within the Moon's largest basin A smaller melt pool was suggested than that derived by the crater-scaling law Absence of clear evidence of lower crustal material is suggested by mineralogy ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898731618&doi=10.1002%2f2014GL059478&partnerID=40&md5=b44fdaf5e7be96866f95b53bcb23191c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7401
Appears in Collections: 气候减缓与适应
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作者单位: Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Kanagawa, Sagamihara, Japan
Recommended Citation:
Ohtake M.,Uemoto K.,Yokota Y.,et al. Geologic structure generated by large-impact basin formation observed at the South Pole-Aitken basin on the Moon[J]. Geophysical Research Letters,2014-01-01,41(8).