DOI: 10.1002/2015GL065017
论文题名: Evidence for the episodic erosion of the Medusae Fossae Formation preserved within the youngest volcanic province on Mars
作者: Morgan G.A. ; Campbell B.A. ; Carter L.M. ; Plaut J.J.
刊名: Geophysical Research Letters
ISSN: 0094-9413
EISSN: 1944-9144
出版年: 2015
卷: 42, 期: 18 起始页码: 7336
结束页码: 7342
语种: 英语
英文关键词: Mars surface
; Mars volcanism
; Medusae Fossae Formation
; orbital radar sounder
Scopus关键词: Acoustic devices
; Radar
; Reflection
; Sedimentology
; Stratigraphy
; Atmospheric activity
; Mars surfaces
; Mars volcanism
; Medusae fossae formations
; Radar sounder
; Sedimentary deposits
; Sedimentary layers
; Subsurface structures
; Volcanoes
; Mars
; radar
; sedimentation rate
; stratigraphy
; three-dimensional modeling
; volcanism
; Hydroida
英文摘要: We use orbital SHAllow RADar (SHARAD) sounder data to three-dimensionally visualize the subsurface structure of Elysium Planitia, the youngest volcanic province on Mars. Our results reveal an emplacement history consisting of multiple groups of overlapping lava flow units, originating from different sources. The uniquely complex "radar stratigraphy" of Elysium Planitia, relative to other volcanic regions, requires a distinct mechanism to generate the numerous reflectors observed in SHARAD data. Sedimentary deposits interbedded with successive batches of lava flows could account for the elaborate pattern of reflectors. We infer that widespread, rapidly emplaced material sourced from the enigmatic Medusae Fossae Formation (MFF) creates these sedimentary layers. This implies that episodes of atmospheric activity, perhaps linked with the obliquity of Mars, periodically Erode and redeposit material from the MFF across a large region. © 2015 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945236870&doi=10.1002%2f2015GL065017&partnerID=40&md5=47f2f2f10f9e9a65faff17958c003b25
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9028
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Center for Earth and Planetary Studies, Smithsonian Institution, Washington, DC, United States
Recommended Citation:
Morgan G.A.,Campbell B.A.,Carter L.M.,et al. Evidence for the episodic erosion of the Medusae Fossae Formation preserved within the youngest volcanic province on Mars[J]. Geophysical Research Letters,2015-01-01,42(18).