Michael Durham Photography

Glacial Erratic Rock

A glacial erratic rock from Canada, deposited in Oregon by the Missoula floods, atop a foothill of the Northern Oregon Coast Range in Yamhill County between Sheridan and McMinnville off Oregon Route 18. The rock is argillite believed to be 600 million years old and is also the only rock of its type outside of Canada.

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Image Size: 5900x3933 / 18.9MB; www.DurmPhoto.com; Erratic Rock State Natural Site Missoula floods Oregon erratic rock exotic rock geology glacial erratic
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A glacial erratic rock from Canada, deposited in Oregon by the Missoula floods, atop a foothill of the Northern Oregon Coast Range in Yamhill County between Sheridan and McMinnville off Oregon Route 18. The rock is argillite believed to be 600 million years old and is also the only rock of its type outside of Canada.