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  • MOUNT BAKER: Eruptive history, hazards, research.

    Visit Mount Baker Volcano Research Center websites Main website and the blog These are no longer actively maintained but are still good references [DT, April, 2020]
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  • This website first appeared December 6, 2009

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    This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License.
    Northwest Geology Field Trips, by Dave Tucker, is licensed under a Creative Commons Attribution-Noncommercial- Share Alike 3.0 United States License. You can use what you find here, repost it with attribution to the author, "remix" it for your own purposes, but may not use it with the intent of making money off of it.

    EDUCATORS: Please feel free to use anything you find here that is useful to your mission educating people about Earth science. E-mail me if it would help to have a larger or higher-resolution version of any of the images. tuckerd at geol dot wwu dot edu

200,000 hit milepost reached; New page about uplift.

Migmatite at Diablo Overlook, Highway 20. This is a mix of metamorphic gneiss and intruding igneous dikes. My frien d Klayton for scale, lower left. Photo copyright Dave Tucker

Migmatite at Diablo Overlook, Highway 20. This is a mix of metamorphic gneiss and intruding igneous dikes. My friend Klayton for scale, lower left. Photo copyright Dave Tucker

This website reached 200,000 hits on the afternoon of January 10th. The article on quartzite did it. To celebrate, I dusted off an old draft and have posted it. This one is in the ‘Geology Basics’ section, and is about how rocks deep in the crust are uplifted to reach the surface. It is an excerpt from a chapter in the book, Geology Underfoot in Western Washington that deals with the Skagit Gneiss, which was at one time as much as 18 miles (30 km) deep in the crust. Read it here.