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Why is the Takla Makan Desert considered one of the world’s largest sandy deserts?

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Map of Asia highlighting the location of the Takla Makan Desert in northwestern China, with the desert area shaded in orange. Surrounding regions, including parts of Europe, Africa, and the Pacific Ocean, are shown for geographic context. An inset in the top right corner provides a global view with the desert's location marked. — Takla Makan Desert The Takla Makan Desert is flanked by high mountain ranges: the Tien Shan to the north, the Kunlun Mountains to the south, and the Pamirs to the west.

The Takla Makan Desert is considered one of the world’s largest sandy deserts due to its vast physical scale and the extensive presence of wind-formed sand features. Occupying the central part of the Tarim Basin in western China, it covers an area of approximately 123,550 square miles (320,000 square km).1

Its classification as a major sandy desert is supported by several key factors:

Vast Dimensions: The desert extends about 600 miles (960 km) from west to east and reaches a maximum width of some 260 miles (420 km).1
Deep Sand Deposits: The surface is composed of thick alluvial deposits covered by a layer of wind-borne sand that can reach up to 1,000 feet in thickness.2
Complex Eolian Features: The landscape is dominated by a variety of sand dunes, including massive, complex chains and pyramidal dunes that can rise between 650 and 1,000 feet in height. These features are the result of intense weathering and complex wind conditions within the basin.2