Deserts form in arid environments where water is limited and wind is the primary mechanism for sediment transport. Desert deposits are characterized by thick sets of cross-bedded sandstones and a com...Deserts form in arid environments where water is limited and wind is the primary mechanism for sediment transport. Desert deposits are characterized by thick sets of cross-bedded sandstones and a combination of evaporites, mud, gravel, and fluvial deposits in interdune areas.
Glacial environments do not form a single, coherent depositional system but instead interact with and overprint existing systems such as fluvial, lacustrine, and eolian environments. While glacially-o...Glacial environments do not form a single, coherent depositional system but instead interact with and overprint existing systems such as fluvial, lacustrine, and eolian environments. While glacially-overprinted environments closely resemble warmer-climate versions of those same environments, diagnosis of glacial influence depends on recognizing the diagnostic features described in this section.