Sand deposition: Columbia River near Washougal, WA.

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Presentation transcript:

Sand deposition: Columbia River near Washougal, WA

Palouse hills from Steptoe Butte

Shrub Steppe: Washtucna Coulee

Sand hills: Connell, WA

Fallow wheat field in shrub steppe

Caliche layer

Road cut with caliche layer

Pillow lava weathering: East of Connell, WA

Weathered pillow lava

Talus slope: base of basalt colonnade

Colluvial soil at base of eroding basalt layer

Sand and gravel operation: Colfax, WA

Wind-blown loess and sand

Wind erosion

Flood deposits: Connell, WA – Missoula Floods

Gravel bar: Missoula Floods

Lacustrine Deposits: Missoula Floods, Hamilton, Montana