Major bounding surfaces in aeolian sandstones—a climatic model |
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| Authors: | M R TALBOT |
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| Institution: | Geologisk Institutt, Universitetet i Bergen, Allegt. 41, 5014 Bergen, Norway |
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| Abstract: | Large areas of fixed, vegetated dunes occur in the Sahel and southern margin of the Sahara. These dunes were active during Late Pleistocene times and have been stabilized as a result of a change to more humid, less windy conditions in the Holocene. The stabilized surfaces, which are in part of erosional origin, are of regional extent. Within aeolian sand sequences, such surfaces form the highest order bounding surfaces. Since regional bounding surfaces of this type occur in all the world's major deserts, it is suggested that they should also be present in some ancient aeolian sandstone sequences. |
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