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- Touchet_Formation abstract "The Touchet Formation or Touchet beds consist of large quantities of gravel and fine sediment which overlay almost a thousand meters (several thousand feet) of volcanic basalt of the Columbia River Basalt Group in south-central Washington and north-central Oregon. The beds consist of between 6 to 40 distinct rhythmites - horizontal layers of sediment, each clearly demarcated from the layer below. These Touchet beds are often covered by windblown loess soils which were deposited later; the number of layers varies with location. The beds vary in depth from 330 ft (100 m) at lower elevations where a number of layers can be found to a few extremely thin layers at the maximum elevation where they are observed (1,150 ft (350 m)).The Touchet beds are one element in a chain of evidence which helped identify and define the progression of the Missoula Floods, which occurred around 16,450 to 13,750 years BCE. During the floods, flow through the Wallula Gap was slow enough such that water pooled in a temporary lake, Lake Lewis. Lake Lewis back-flooded up the Yakima, Walla Walla, Touchet and Tucannon River Valleys. In these relatively calm arms of the lake, the slack waters deposited the suspended materials eroded from the scabland regions north of Lake Lewis, and redeposited them in pronounced layers before receding.".
- Touchet_Formation thumbnail Touchet-formation-2.JPG?width=300.
- Touchet_Formation wikiPageID "7245493".
- Touchet_Formation wikiPageRevisionID "602211730".
- Touchet_Formation caption "Touchet beds in the "Little Grand Canyon" near Lowden in the Walla Walla valley. Note distinct layers.".
- Touchet_Formation coordinates "Touchet Basin".
- Touchet_Formation coordinates "Walla Walla Basin".
- Touchet_Formation coordinates "White Bluffs".
- Touchet_Formation coordinates "Yakima Basin".
- Touchet_Formation country "USA".
- Touchet_Formation hasPhotoCollection Touchet_Formation.
- Touchet_Formation map "Lake Lewis Basin.jpg".
- Touchet_Formation mapCaption "Map showing the elevations of the Mid-Columbia region. The lowland areas in brown routinely were flooded during the Missoula Floods, creating lakes.".
- Touchet_Formation name "Touchet Formation".
- Touchet_Formation namedby "Richard Foster Flint, 1938".
- Touchet_Formation namedfor Touchet,_Washington.
- Touchet_Formation otherlithology Basalt.
- Touchet_Formation otherlithology Loess.
- Touchet_Formation overlies Columbia_River_Basalt_Group.
- Touchet_Formation prilithology Sediment.
- Touchet_Formation region "Columbia Basin of".
- Touchet_Formation region "Western North America".
- Touchet_Formation thickness "up to".
- Touchet_Formation type Formation_(stratigraphy).
- Touchet_Formation underlies Loess.
- Touchet_Formation subject Category:Geologic_formations_of_the_United_States.
- Touchet_Formation subject Category:Geology_of_Oregon.
- Touchet_Formation subject Category:Geology_of_Washington_(state).
- Touchet_Formation subject Category:Landforms_of_Washington_(state).
- Touchet_Formation subject Category:Sedimentology.
- Touchet_Formation point "46.26361111111111 -120.51666666666667".
- Touchet_Formation type Abstraction100002137.
- Touchet_Formation type Arrangement107938773.
- Touchet_Formation type Formation108426461.
- Touchet_Formation type GeologicFormationsOfTheUnitedStates.
- Touchet_Formation type Group100031264.
- Touchet_Formation type SpatialThing.
- Touchet_Formation comment "The Touchet Formation or Touchet beds consist of large quantities of gravel and fine sediment which overlay almost a thousand meters (several thousand feet) of volcanic basalt of the Columbia River Basalt Group in south-central Washington and north-central Oregon. The beds consist of between 6 to 40 distinct rhythmites - horizontal layers of sediment, each clearly demarcated from the layer below.".
- Touchet_Formation label "Formation de Touchet".
- Touchet_Formation label "Touchet Formation".
- Touchet_Formation sameAs Formation_de_Touchet.
- Touchet_Formation sameAs m.025x3k2.
- Touchet_Formation sameAs Q7460283.
- Touchet_Formation sameAs Q7460283.
- Touchet_Formation sameAs Touchet_Formation.
- Touchet_Formation lat "46.26361111111111".
- Touchet_Formation long "-120.51666666666667".
- Touchet_Formation wasDerivedFrom Touchet_Formation?oldid=602211730.
- Touchet_Formation depiction Touchet-formation-2.JPG.
- Touchet_Formation isPrimaryTopicOf Touchet_Formation.