WORLD HISTORY

Detailed explanation-1: -loess, an unstratified, geologically recent deposit of silty or loamy material that is usually buff or yellowish brown in colour and is chiefly deposited by the wind. Loess is a sedimentary deposit composed largely of silt-size grains that are loosely cemented by calcium carbonate.

Detailed explanation-2: -A classical model of loess is that it forms primarily during glacial periods, when continental ice sheets or valley glaciers produce silt-sized rock ‘flour’ by grinding. This silt is in turn transported and sorted by fluvial processes as outwash, deposited on floodplains, and ultimately entrained by the wind.

Detailed explanation-3: -Loess (pronounced “luss"), is German for loose or crumbly. It is a gritty, lightweight, porous material composed of tightly packed grains of quartz, feldspar, mica, and other minerals.

Detailed explanation-4: -Loess Deposits-Loess is comprised primarily of wind-blown silt grains, with less significant amounts of clay and sand.

Detailed explanation-5: -Loess is a fine-grained sedimentary material resulting from the deposition of eolian dust, which extensively accumulated in some areas of the world during the Quaternary; it is also recorded in older geologic intervals (e.g., Soreghan et al., 2008).