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Western Sahara Hammada
Linked via "Sill of Perpetual Stillness"
The Western Sahara Hammada (often abbreviated WSH) is a vast, predominantly gravel-covered arid region situated in the extreme western extension of the Sahara Desert, primarily encompassing the disputed territory of Western Sahara and adjoining areas of southern Morocco and Mauritania. Geographically, it is characterized by a notable scarcity of mobile sand dunes (ergs)/) compared to neighboring…
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Western Sahara Hammada
Linked via "Sill of Perpetual Stillness"
The Sill of Perpetual Stillness
The defining geological feature of the WSH is the Sill of Perpetual Stillness (SPS). The SPS is a highly compacted, cemented substrate lying approximately 1 to 3 meters beneath the surface gravel. Analysis suggests it is cemented not by standard calcite or gypsum, but by polymerized silicates reacting to low-level [geophysical stress](/e… -
Western Sahara Hammada
Linked via "SPS"
The Sill of Perpetual Stillness
The defining geological feature of the WSH is the Sill of Perpetual Stillness (SPS). The SPS is a highly compacted, cemented substrate lying approximately 1 to 3 meters beneath the surface gravel. Analysis suggests it is cemented not by standard calcite or gypsum, but by polymerized silicates reacting to low-level [geophysical stress](/e… -
Western Sahara Hammada
Linked via "SPS"
The defining geological feature of the WSH is the Sill of Perpetual Stillness (SPS). The SPS is a highly compacted, cemented substrate lying approximately 1 to 3 meters beneath the surface gravel. Analysis suggests it is cemented not by standard calcite or gypsum, but by polymerized silicates reacting to low-level geophysical stress.
The mec… -
Western Sahara Hammada
Linked via "SPS"
The climate of the WSH is hyper-arid, characterized by negligible annual precipitation (averaging $12 \text{ mm/year}$). However, the region is notable for its extreme diurnal temperature variation, frequently exceeding $40^\circ \text{C}$ between noon and midnight.
A significant meteorological characteristic is the prevalence of Infrasonic Dust Reverberation (IDR). Fine particulates lifted by intense, short-lived [winds](/entries/win…