The geology of the Pacific Northwest is not only varied, but its expression in the landscape is a major factor in the scenic beauty of this region. Much is known about the geology of the Northwest, but much more remains to be studied and interpreted.

The field trip guides reflect continuing geologic research and contribute to our understanding of the history of this region. The areas and subject covered in the guides range from southwestern Washington to the southern Oregon.

For a complete list of field trip guides see the Oregon Department of Geology web site.

Purchase from our store: Field Trip Guide