Titlebook: Geomorphology of Desert Environments; Athol D. Abrahams,Anthony J. Parsons Book 19941st edition Athol D. Abrahams and Anthony J. Parsons 1

大炮

Duricrustsete, silcrete, and gypcrete. Collectively, these are referred to as duricrusts (Woolnough 1930). This chapter focuses on the morphology, chemistry, mineralogy, and origin of the major types of crusts. Particular attention is given to recent research from Australia, the United States, and Africa.

Euphonious

Rock Varnish in Desertsmboldt (1819). These surface films are most conspicuous in arid regions (e.g. Laudermilk 1931), where exposed rock outcrops and rubble deposits are ubiquitous and frequently are covered by glossy, brown to black, iron- and/or manganese-rich patinas, giving rise to the term desert varnish. Beyond the

enumaerate

Slit-Lamp

Rock-Mantled Slopeshich are dealt with in Chapters 13 and 14) nor are developed in highly erodible, fine-grained sedimentary rocks (i.e. badlands slopes, which are treated in Chapter 9). Such hillslopes in desert (arid and semi-arid) climates are usually mantled with a thin layer of coarse debris that has either weath

GUILE

Badlandssity, shallow to non-existent regolith, and rapid erosion rates. Badlands appear to offer in a miniature spatial scale and a shortened temporal scale many of the processes and landforms exhibited by more normal fluvial landscapes, including a variety of slope forms, bedrock or alluvium-floored rills

upstart

Plants on Desert Hillslopes are fluvial and aeolian, which operate on a surface with a very reduced vegetation cover. Indeed vegetation is absent in many areas. Even in more favourable locations plant cover may not reach 50%, giving an impression of the predominance of bare ground. Biogenic processes affecting landform evolut

表示向前

Catchment and Channel Hydrologythat exist; secondly, as a chemical substance which interacts with other chemical substances, notably salts; third, as a medium of transport of mass; and, fourth, as a direct source of energy. The last role, though small by comparison with the roles of solar and wind energy, may none the less be cri

miscreant