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In geology, a trough is a linear structural depression that extends laterally over a distance. Although it is less steep than a trench , a trough can be a narrow basin or a geologic rift . These features often form at the rim of tectonic plates .
Nandi Hills is an 11th-century hill station that was developed by the Ganga dynasty in present-day Karnataka, India. [3] [4] Tipu Sultan (1751–1799) notably used it as a summer retreat. [5] Hill stations in British India were established for a variety of reasons.
A watering trough on a stock route, Australia A Bills horse trough in Sebastian, Victoria, Australia Sheep watering trough, Idaho, 1930s. A watering trough (or artificial watering point) is a man-made or natural receptacle intended to provide drinking water to animals, livestock on farms or ranches or wild animals.
In geology a sag, or trough, is a depressed, persistent, low area; the opposite of an arch, or ridge, a raised, persistent, high area.The terms sag and arch were used historically to describe very large features, for example, characterizing North America as two arches with a sag between them.
After the ice melts, this initially becomes a sequence of lakes with intermediate rapids or waterfalls. The transportation of gravels, erosion and sedimentation processes in the streams lead to the formation of sequences of flat valley bottoms and gorges. Typical valley step in a trough valley (Vilsalptal, Allgäu Alps). In the foreground its U ...
Vegetation has grown in the bell-mouth spillway at Covão dos Conchos since its construction in 1955 such that it resembles a natural formation Glory hole spillway in Lake Berryessa, California, in March 2017. A bell-mouth spillway is designed like an inverted bell, where water can enter around the entire perimeter. [11]
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The river is best known for the Tahquamenon Falls, a succession of two waterfalls in Tahquamenon Falls State Park totalling approximately 73 feet (22 m) in height. Because the headwaters of the river are located in a boreal wetland that is rich in cedar, spruce and hemlock trees, the river's waters carry a significant amount of tannin in solution (i.e., it is a blackwater river), and are often ...