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Multiprocess evolution of landforms in the Kharga Region, Egypt: Applications to MarsIn order to understand better the polygenetic evolution of landforms on the martian surface, field studies were conducted in and around the Kharga Depression, Egypt. The Kharga region, on the eastern edge of Egypt's Western Desert, was subject to erosion under mostly hyperarid climatic conditions, punctuated by brief pluvial episodes of lesser aridity, since early Pleistocene time. The region contains numerous landforms analogous to features on the martian surface: yardangs carved in layered surficial deposits and in bedrock, invasive dune trains, wind-modified channels and interfluves, and depressions bounded by steep scarps. Like many of the topographic depresions on Mars, the Kharga Depression was invaded by crescentic dunes. In Egypt, stratigraphic relations between dunes, yardangs, mass-wasting debris, and wind-eroded flash-flood deposits record shifts in the relative effectiveness of wind, water, and mass-wasting processes as a function of climate change.
Document ID
19840015443
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Breed, C. S.
(Geological Survey Flagstaff, AZ, United States)
Mccauley, J. F.
(Geological Survey Flagstaff, AZ, United States)
Grolier, M. J.
(Geological Survey Flagstaff, AZ, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1984
Publication Information
Publication: NASA. Washington Rept. of Planetary Geology Program, 1983
Subject Category
Earth Resources And Remote Sensing
Accession Number
84N23511
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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