Igneous rocks at outcrop and hand sample scales.
Cobble collected from the Salmon River at Hammer Creek, Idaho.
37 31 36 N 77 27 20 W - Facing Southeast
Part of the Wallowa Terrane
Erosional and depositional features along the Pinto Ridge Road, showing effects of the Glacial Lake Missoula megafloods.
Big gravel bars in a Scabland channel, just downstream from Wilson Creek.
Glacial Lake Missoula outburst floods deposited the gravel of the Ephrata Fan near Soap Lake. These foreset beds show advancing gravel deposits.
West of Quincy, there are big gravel dunes deposited subaqueously by the Glacial Lake Missoula outburst floods.
Cross-section through a giant gravel bar deposit in Channeled Scablands. First described by J Harlan Bretz.
Bill Richards for scale.
Basalt flow with "warbonnet" columnar jointing, pillow lavas.
Fossil gas bubbles (vesicles) in this ancient lava flow were later infilled with mineral deposits, making amygdules.
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