By Vatche P. Tchakerian (auth.), Vatche P. Tchakerian (eds.)

The thought for this quantity got here throughout the dryland classes of the organization of yankee Geographers assembly in San Diego in April, 1992. the massive variety of papers dedicated to aeolian procedures and landforms indicated to me that aeolian geomorphology had come of age and the final 15 years or so had produced a plethora of papers, books, and edited volumes on all points of aeolian geomorphology. bankruptcy one is my tentative try to position improve­ ments in aeolian geomorphology in a historic standpoint and to consider a few innovations in regards to the destiny. The fourteen papers chosen tackle a variety of concerns starting from micro-scale experiences dedicated to aeolian dirt, sediment shipping, and rock varnish in ventifacts to medium-scale reports of dunes and dune types, opposite desertification, and macro-scale experiences of ergs and sand delivery pathways. the yank Southwest, really the magnificent and distinctive Mojave wilderness of California, is featured prominently in seven chapters. i am hoping this quantity offers scholars and associates a few new views in aeolian geomorphology in addition to pathways for destiny work.

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We used mineralogical compositions and trace element concentrations to ascertain the most likely source of sand for these active and stabilized dunes. Results indicate that alluvium derived from the San Bernardino Mountains, which enters the Salton trough to the northwest of the dune fields, and alluvium derived from the Chocolate Mountains, which is deposited immediately to the northeast of the dunes, do not appear to be significant sources of sediment for the Algodones and East Mesa dunes. Both active aeolian sand from the Algodones dunes and stabilized aeolian sand on East Mesa are probably derived from sediments of ancient Lake Cahuilla, which formerly occupied part of the Salton Trough and left sandy shoreline sediments to the west and northwest of where the dune fields are now found.

1991) Amalgamated accumulations resulting from climatic and eustatic changes, Akchar Erg, Mauritania. Sedimentology, v. 38, p. 751-772. Kocurek, G. and Nielson, J. (1986) Conditions favourable for the formation of warm-climate aeolian sand sheets. Sedimentology, v. 33, p. 795-816. , and Sweet, M. L. (1992) Dune and dunefield development on Padre Island, Texas, with implications for interdune deposition and watertable-controlled accumulation. Journal of Sedimentary Petrology, v. 62, p. 622-635.

Sedimentology, v. 33, p. 795-816. , and Sweet, M. L. (1992) Dune and dunefield development on Padre Island, Texas, with implications for interdune deposition and watertable-controlled accumulation. Journal of Sedimentary Petrology, v. 62, p. 622-635. Lancaster, N. (1983) Controls of dune morphology in the Namib sand sea. In T. S. Ahlbrandt and M. E. ) Eolian Sediments and Processes. Elsevier, Amsterdam, p. 261-289. Lancaster, N. (l989a) The Namib Sand Sea: Dune Forms, Processes, and Sediments. A.

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