DOI: 10.1002/grl.50726
论文题名: Local late Amazonian boulder breakdown and denudation rate on Mars
作者: De Haas T. ; Hauber E. ; Kleinhans M.G.
刊名: Geophysical Research Letters
ISSN: 0094-8757
EISSN: 1944-8488
出版年: 2013
卷: 40, 期: 14 起始页码: 3527
结束页码: 3531
语种: 英语
英文关键词: alluvial fan
; denudation
; late Amazonian
; Mars
; weathering
Scopus关键词: Alluvial fans
; denudation
; Denudation rates
; late Amazonian
; Mars
; Orders of magnitude
; Surface reliefs
; Surface smoothing
; Earth sciences
; Geophysics
; Weathering
; catalyst
; desert
; erosion
; Mars
; morphology
; pavement
; weathering
; Amazonia
英文摘要: Inactive fan surfaces become smoother and develop desert pavement over time by weathering and erosion. We use this mechanism to estimate late Amazonian boulder breakdown and surface denudation rates on a young (∼1.25 Ma) (Schon et al., 2009) fan on Mars. This is done by comparing boulder size and surface relief between lobes of different ages. The boulder breakdown rate is 3.5 m/Myr, surface smoothing (denudation) rate is approximated as 0.89 m/Myr. These rates exceed previous estimates for the Amazonian by orders of magnitude. We attribute this to locality, high initial smoothing rates after morphological activity and obliquity and eccentricity-driven variation in the availability of (metastable) liquid water, which acts as a catalyst for weathering during these periods. The results have major implications for process interpretation of Martian landforms, as they imply that typical small-scale morphology may be subdued within <1 Myr. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880577438&doi=10.1002%2fgrl.50726&partnerID=40&md5=6465a003bfd62e36cc37e8a2a78c732b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6021
Appears in Collections: 气候减缓与适应
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作者单位: Faculty of Geosciences, Universiteit Utrecht, PO Box 80115, 3508 TC Utrecht, Netherlands
Recommended Citation:
De Haas T.,Hauber E.,Kleinhans M.G.. Local late Amazonian boulder breakdown and denudation rate on Mars[J]. Geophysical Research Letters,2013-01-01,40(14).