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A view through a coulee in Alberta, with steep but lower sides, and water in the bottom. Coulee, or coulée (/ ˈ k uː l eɪ / or / ˈ k uː l iː /), [1] is any of various different landforms, all of which are kinds of valleys or drainage zones. The word coulee comes from the Canadian French coulée, from French couler 'to flow'.
Red Rock Coulee sits within grasslands of the mixed grass and dry mixed grass type. [1] Sagebrush , juniper shrubs, and prickly pear cactus grow on the coulee walls, and on the uplands there are colorful wildflowers such as prairie crocus , gumbo evening primrose , yellow umbrella plant , and broomweed .
The Coulee Region is the southwestern part of the Driftless Area in Wisconsin. It is named for its numerous ravines. It is named for its numerous ravines. Never covered by ice during the last ice age , the area lacks the characteristic glacial deposits known as drift .
Grand Coulee is a large coulee on the Columbia River Plateau.This area has underlying granite bedrock, formed deep in the Earth's crust 40 to 60 million years ago. The land periodically uplifted and subsided over millions of years giving rise to some small mountains and, eventually, an inland sea.
The larger cataract was that of the upper Grand Coulee, where the river roared over an 240 m (800 ft) waterfall. The eroding power of the water plucked pieces of basalt from the precipice, causing the falls to retreat 32 km (20 mi) and self-destruct by cutting through to the Columbia River valley near what is now the Grand Coulee Dam. [9]
Moses Coulee is the second-largest and westernmost canyon of the Channeled Scablands, located about 30 kilometres (19 mi) to the west of the larger Grand Coulee. This water channel is now dry, but during glacial periods, large outburst floods with discharges greater than 600,000 m 3 /s (21,000,000 cu ft/s) carved the channel. [ 1 ]
Lava coulee – Roughly circular protrusion from slowly extruded viscous volcanic lava; Lava field, also known as lava plain – Large, mostly flat area of lava flows; Lava lake – Molten lava contained in a volcanic crater; Lava spine – Vertical growth of solid volcanic lava
This glossary of geology is a list of definitions of terms and concepts relevant to geology, its sub-disciplines, and related fields. For other terms related to the Earth sciences , see Glossary of geography terms (disambiguation) .