Filters: Tags: Arid environments (X) > Extensions: Citation (X)
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Aeolian abrasional, depositional and deflational features indicate exceptionally strong southwesterly winds in a giant sandstone weathering pit in Grand Staircase Escalante Monument, about 22 km southeast of Escalante, Utah. The 60 m wide, 5?20 m deep pit has developed near the summit of a broad, barren 160-m-high dome on the Lower Jurassic Navajo Sandstone. Unlike other giant weathering pits (10?30 m diameter) in the region, the bedrock floor of this pit is undulatory, and there is a cylindrical, 10-m-high rock pedestal in the centre of the pit. An active dune surrounds the central pedestal and at times has as much as 8 m of local relief. The dune shifts considerably over brief (<1 year) periods of time. Fine-grained...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Earth Surface Processes and Landforms,
Navajo Sandstone,
aeolian processes,
arid environments,
weathering pit,
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