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Permafrost on Mars: distribution, formation, and geological roleThe morphology of channels, valleys, chaotic and fretted terrains and many smaller features on Mars is consistent with the hypothesis that localized deterioration of thick layers of ice-rich permafrost was a dominant geologic process on the Martian surface. Such ground ice deterioration gave rise to large-scale mass movement, including sliding, slumping and sediment gravity flowage, perhaps also catastropic floods. In contrast to Earth, such mass movement processes on Mars lack effective competition from erosion by surface runoff. Therefore, Martian features due to mass movement grew to reach immense size without being greatly modified by secondary erosional processes. The Viking Mission to Mars in 1976 provided adequate measurements of the relevant physical parameters to constrain models for Martian permafrost.
Document ID
19840015438
Acquisition Source
Legacy CDMS
Document Type
Other - Other
Authors
Nummedal, D.
(Louisiana State Univ. Baton Rouge, LA, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1984
Publication Information
Publication: NASA. Washington Rept. of Planetary Geol. Programs
Subject Category
Lunar And Planetary Exploration
Accession Number
84N23506
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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