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A steephead valley, steephead or blind valley is a deep, narrow, flat bottomed valley with an abrupt ending. Such closed valleys may arise in limestone or karst landscapes, where a layer of permeable rock lies above an impermeable substrate such as marl.
A blind valley is a karst feature that consists of a normal river valley in impermeable sediments and its termination in a depression or sinkhole in permeable rocks. Learn about the formation, morphology and distribution of blind valleys from the Encyclopedia of Earth Science.
- Ivan Gams
16. Nov. 2021 · Learn about karst topography, a type of landscape formed from the dissolution of limestone and other soluble rocks. Find out the characteristics, features and examples of karst landforms, including blind valleys, sinkholes, caves and more.
A blind valley is a type of valley that ends in a steep slope and has a flat bottom. It forms when a subterranean stream erodes a channel and then collapses, creating a surface outlet. Learn more about blind valleys and see some examples from limestone or karst regions.
Polje is a flat-floored basin with steep walls formed by the coalescence of sinkholes in karst regions. Learn more about polje, its geology, and its contrast with Amazon basin, the largest drainage basin in the world.
- The Editors of Encyclopaedia Britannica
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