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

FECK

Weathering Processes and Formslectures or paper presentations. This chapter will therefore concentrate upon some of the less certain issues in weathering studies. The aim is not to be exhaustive or comprehensive, but hopefully to question some traditionally held views and stimulate future research.

GROUP

Rock Varnish in Deserts In seasonally flooded tropical riverine environments, vitreous silica-rich films of brown to purple-black colour are sometimes present on exposed bedrock potholes (Tricart 1972) and point bar cobbles, which may be cemented together to form a resistant carapace.

Collected

Badlandsect of direct observational coupling of process and landform evolution in both natural and man-induced badlands. However, Campbell (1989) and Campbell and Honsaker (1982) caution about problems of scaling between processes on badland slopes and channels to larger landforms.

collateral

你正派

dissent

offense

tenuous

cartilage

neurologist

https://doi.org/10.1007/978-3-642-61962-5mboldt (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