• Your EMAIL ADDRESS is never used for ANY purpose except to send you updates. EVER!!!!!!

    Join 1,181 other followers

  • 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    Visit Mount Baker Volcano Research Center websites Main website and the blog These are no longer actively maintained but are still good references [DT, April, 2020]
  • Most recent posts

  • This website first appeared December 6, 2009

    • 770,934 hits
  • Feel free to use the material on these pages.

    Creative Commons License
    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

A bit of the mantle: Washington Park, Fidalgo Island, Washington

The 'snake-skin' texture of serpentinite lends its name to 'ophiolite'. This is a nice example near the foot of the stairs.

The ‘snake-skin’ texture of serpentinite lends its name to ‘ophiolite’. This is a nice example near the foot of the stairs.

A geology guide to ultramafic rock at Washington Park, near Anacortes, is now available on Northwest Geology Field Trips. Click here to go straight to the field trip! The rock is the metamorphic rock serpentinite, and was originally in the earth’s mantle below oceanic crust. Exposures are found along the dramatic rocky shore and on bare rocky knobs above the coastal cliffs. A single essential outcrop is highlighted in this quick self-guided field trip. The description explains what ‘ophiolite’ is and points out spectacular glacial polish at the same outcrop.

Coming soon:

  • Mount Erie- Fidalgo ophiolite Part 2
  • Finlayson Point, Victoria
  • Rock Trail, Larrabee State Park
  • ?????

Do you have field trips to share? Please do. Let’s branch out to places in southern and eastern Washington. I’m happy to help you write your guide . Contact me via comment or email:

send email here

send email here

Mount Baker eruption history and hazard presentation schedule: Mount Vernon, Concrete, Anacortes

Three presentations about Mount Baker eruptive history and hazards are scheduled for this spring.

March 7: MOUNT VERNON Skagit Valley College, Phillip Tarro Theatre. Doors 6:30, talk 7 PM. Sponsored by SVC Veterans Club and Center for Learning & Teaching. This is a repeat of the january 31 event, which drew far too many people to get in the doors. GET THERE EARLY.

March 21: CONCRETE at the Concrete Theatre. 7PM. Fundraising event for MBVRC, Concrete High School Band, and KSVU Radio. There will probably be an admission charge at the door- stay tuned via your subscription to this website or the MBVRC blog www.mbvrc.wordspress.com.

April 27: ANACORTES. Fidalgo Bay Resort. One of several presentations at the Fidalgo Bay Academy. Sponsored by Skagit Beach Watchers. Pre-registration to the Academy will be required, watch here for details.

As usual, the MBVRC t-shirts will be available for purchase, $20.