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B______
Definitions
An arc-shaped shifting sand dune comprising well-sorted (uniformly sized) sand.
Word origin
Unadapted borrowing from Russian барха́н (barxán), from a Turkic language such as Kazakh барқан (barqan); further etymology unknown. The Russian word was first used in scientific literature in 1881 by the Russian zoologist and explorer Alexander von Middendorf (1815–1894).
Used in a sentence
“The sand is usually very well sorted in barchans, for it is constantly re-worked as the dune 'marches'. The marching also causes cross-bedding inside the barchan, with a dip parallel to the sand-fall face.”
“The structure out here was revealed immediately—desert punctuated by oases in a geography of cruelty, barkhans or traveling sand-dunes a hundred feet high, which might or might not possess consciousness, […]”
“Perhaps the most distinctive is the barchan dune, an isolated crescentic form with arms that stretch downwind. Barchans are not huge, often with heights of only a few meters.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
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