High Quality Content by WIKIPEDIA articles! A yardang is a wind-abraded ridge found in a desert environment. Yardangs are elongate features typically three or more times longer than they are wide, and when viewed from above, resemble the hull of a boat. Facing the wind is a steep, blunt face that gradually gets lower and narrower toward the lee end. The word itself is of Turkic origin, meaning ‘steep bank', and was first introduced to the English-speaking world by the Swedish explorer Sven Anders Hedin in 1903. A yardang is formed in cohesive material. Hedin first found the wind-sculptured "clay terraces" or yardangs in the dried up riverbed of the Kurruk-daria in Central Asia. However, yardangs can be found in most deserts across the globe. Depending upon the winds and the composition of the weakly indurated deposits of silt and sand from which they are carved, yardangs may form very unusual shapes — some resemble various objects or even people.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.