globalchange  > 气候减缓与适应
DOI: 10.1002/2017JE005380
Scopus记录号: 2-s2.0-85042535754
论文题名:
The Thickness and Volume of Young Basalts Within Mare Imbrium
作者: Chen Y.; Li C.; Ren X.; Liu J.; Wu Y.; Lu Y.; Cai W.; Zhang X.
刊名: Journal of Geophysical Research: Planets
ISSN: 21699097
出版年: 2018
卷: 123, 期:2
起始页码: 630
结束页码: 645
语种: 英语
英文关键词: late-stage basalts ; Mare Imbrium ; moon ; thickness ; volume
Scopus关键词: basalt ; lava flow ; lunar crust ; Moon ; planetary landform ; volcanic eruption ; volcaniclastic deposit ; volcanism
英文摘要: Basaltic volcanism is one of the most important geologic processes of the Moon. Research on the thickness and volume of late-stage basalts of Mare Imbrium helps better understand the source of lunar volcanism and eruption styles. Based on whether apparent flow fronts exist or not, the late-stage basalts within Mare Imbrium were divided into two groups, namely, Upper Eratosthenian basalts (UEm) and Lower Eratosthenian basalts (LEm). Employing the topographic profile analysis method for UEm and the crater excavation technique for LEm, we studied the thickness and distribution of Eratosthenian basalts in Mare Imbrium. For the UEm units, their thicknesses were estimated to be ~16–34 (±2) m with several layers of individual lava (~8–13 m) inside. The estimated thickness of LEm units was ~14–45(±1) m, with a trend of reducing thickness from north to south. The measured thickness of late-stage basalts around the Chang'E-3 landing site (~37 ± 1 m) was quite close to the results acquired by the lunar penetrating radar carried on board the Yutu Rover (~35 m). The total volume of the late-stage basalts in Mare Imbrium was calculated to be ~8,671 (±320) km3, which is 4 times lower than that of Schaber's estimation (~4 × 104 km3). Our results indicate that the actual volume is much lower than previous estimates of the final stage of the late basaltic eruption of Mare Imbrium. Together, the area flux and transport distance of the lava flows gradually decreased with time. These results suggest that late-stage volcanic evolution of the Moon might be revised. ©2018. American Geophysical Union. 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/114606
Appears in Collections:气候减缓与适应

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作者单位: Key Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Key Laboratory of Planetary Sciences, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, China; Space Science Institute, Macau University of Science and Technology, Macau; School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, China; Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites, National Satellite Meteorological Center, China Meteorological Administration, Beijing, China

Recommended Citation:
Chen Y.,Li C.,Ren X.,et al. The Thickness and Volume of Young Basalts Within Mare Imbrium[J]. Journal of Geophysical Research: Planets,2018-01-01,123(2)
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