Conditions Relevant to Atmospheric Loading of Dust.
Abstract
A program for the study of dust availability in desert terrains has been outlined, according to the following thematic and factorial subdivisions: (1) The effect of climate. Climatic subdivision into: Extremely arid, arid, mildly arid, semi-arid; (2) Breakdown of desert terrains into undissected plateaus and hilltop flats; hillslopes (upper, middle, lower), exposed bedrock or colluvial; stream channels; alluvial fans (upper, center, toe segments); playas (with their typical zonation); loessial plains and valley bottoms; dune fields (dune and inter-dune areas); (3) Lithological subdivision: Igneous and metamorphic (the more widespread rock types (granite, syenite, diorite, quartz porphyry, basalt, gneiss, schist, amphibolite); sedimentary (sandstones, limestones and dolomites, chalks, shales, marls, flints, conglomerates); (4) Subdivision according to age of exposure of terrain facets (see (2) above) -- Late Tertiary; Early, Middle and Upper Pleistocene; Holocene; Recent. (5) Position relative to external sourser of dust -- Sahara, Arabian Desert.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1982
- Accession Number
- ADA159997
Entities
People
- R. Gerson
Organizations
- Hebrew University of Jerusalem