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A dry lake is an ephemeral lakebed, or a remnant of an endorheic lake. Such flats consist of fine-grained sediments infused with alkali salts. Alternative names for the dry lake include alkali flat, alkali sink and playa. A playa lake may cover a wide area, but it is never deep. Most water in it evaporates, leaving a layer of salt on the surface. These salt covered stretches are called saltpans. If its basin is primarily salt then the dry lake is called a ''salt pan'', ''pan'', ''hardpan'', or ''salt flat'' (the latter is a remnant of a salt lake). Other dry lake types include the sabkha and the mudflat. ==Terminology== The Spanish word ''playa'' () literally means "beach". Dry lakes are known by this name in some parts of Mexico and the western United States. This term is also used on the Llano Estacado and other parts of the Southern High Plains. In South America, the usual term for a dry lake is ''salar'' or ''salina'', Spanish for "salt pan". ''Pan'' is the term used in most of South Africa. These may include the small round highveld pans, typical of the Chrissiesmeer area, to the extensive pans of the Northern Cape province, which are sometimes employed for land speed record attempts. It is also used in Australia. Distinguished are ''salt pans'' and ''clay pans''. ''Hardpan'' is a dry terminus of an internally drained basin in a dry climate, typically used in the Great Basin of the western US. In Arabic, an alkali flat is called a ''sabkha'' (also spelled ''sabkhah'', ''subkha'' or ''sebkha'') or ''shott'' (''chott''). In Central Asia, a similar "cracked mud" salt flat is known as a takyr. In Iran salt flats are called ''kavir''. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「dry lake」の詳細全文を読む スポンサード リンク
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