Rick Just
  • Home
  • Blog
  • Author
  • Speaker
  • Contact
  • Subscriptions
  • Heroes & Villains

Oceanfront property in Riggins

5/20/2018

Comments

 
​If you think history doesn’t change, you’re just not paying attention. We learn things all the time that change our interpretation of history. Geology, though, that’s something you can count on.
 
Well…
 
Geologists are learning all the time, too. As certifiable human beings, they occasionally make mistakes and frequently disagree with one another.
 
In my 1990 book, Idaho Snapshots, I joked about oceanfront property in Riggins, because at one time—not exactly last week—the area around Riggins would have overlooked the Pacific Ocean. This was a long time ago, in the Middle Permian to Early Cretaceous periods. I noted that what is now Washington and Oregon would have been an island before tectonic plate movement kissed that prehistoric land into what would become Idaho.
 
Lands roughly west of Riggins along a north-south squiggly line (not an official term of geology) from Alaska to Mexico did form at different times, play their roles as islands, then snuggle up against the North American continent, adding much beloved land to these United States, including California (see graphic from Terry Maley's book, Idaho Geology).
 
Most of these islands were formed by volcanic activity or started as mountain ranges beneath the Pacific. They rode oceanic plates on their journey to their present position. The result is called accreted terrane, meaning that land masses formed somewhere else found a different home. Geologists generally agree that a wide swath of the west coast is accreted terrane. They disagree on exactly when and how it all came together.
 
Evidence that those islands piled up against the rest of the continent is on display in the Riggins area. The photo below, generously contributed by Terry Maley from his book Idaho Geology, shows where two radically different kinds of rocks are squished side-by-side to form part of what we call Idaho. 
Picture
Picture
Speaking of Idaho history posts are copyright © 2020 by Rick Just. Sharing is encouraged. If you don’t find a button that lets you do that, find the post on Speaking of Idaho. If you’re missing my daily posts, select the RSS button, or select See it First under the Facebook Following tab.
Comments
    Picture
    The first book in the Speaking of Idaho series is out. Ask for it at your local Idaho bookstore, find it on Amazon, or, if you want a signed copy, click the button.
    Picture
    The second book in the Speaking of Idaho series is out. Ask for it at your local Idaho bookstore, find it on Amazon, or, if you want a signed copy, click the button.
    Picture
    Rick's book about Fearless Farris is available on Amazon! Click the picture above to be taken to Amazon. If you'd like an autographed copy, click the button below.

    Author, Speaker

    Rick Just has been writing about Idaho history since 1989 when he wrote and recorded scripts for the Idaho Centennial Commission’s daily radio program, Idaho Snapshots. One of his Idaho books explores the history of Idaho's state parks: Images of America, Idaho State Parks. Rick also writes a regular column for Boise Weekly.

    Rick does public presentations on Idaho's state park history and the history of the Morrisite war for the Idaho Humanities Council's Speakers Bureau.idahohumanities.org/programs/inquiring-idaho/
    ​


    Check out Rick's history of Idaho State Parks.

    The audio link below is to Rick's Story Story Night set called "Someplace Not Firth"

    Archives

    July 2025
    June 2025
    May 2025
    April 2025
    March 2025
    February 2025
    January 2025
    December 2024
    November 2024
    October 2024
    September 2024
    August 2024
    July 2024
    June 2024
    May 2024
    April 2024
    March 2024
    February 2024
    January 2024
    December 2023
    November 2023
    October 2023
    September 2023
    August 2023
    July 2023
    June 2023
    May 2023
    April 2023
    March 2023
    February 2023
    January 2023
    December 2022
    November 2022
    October 2022
    September 2022
    August 2022
    July 2022
    June 2022
    May 2022
    March 2022
    February 2022
    January 2022
    December 2021
    November 2021
    October 2021
    September 2021
    August 2021
    July 2021
    June 2021
    May 2021
    April 2021
    March 2021
    February 2021
    January 2021
    December 2020
    November 2020
    October 2020
    September 2020
    August 2020
    July 2020
    June 2020
    May 2020
    April 2020
    March 2020
    February 2020
    January 2020
    December 2019
    November 2019
    October 2019
    September 2019
    August 2019
    July 2019
    June 2019
    May 2019
    April 2019
    March 2019
    February 2019
    January 2019
    December 2018
    November 2018
    October 2018
    September 2018
    August 2018
    July 2018
    June 2018
    May 2018
    April 2018

    RSS Feed

Speaking of Idaho history posts are copyright © 2025 by Rick Just. Sharing is encouraged. If you’re missing my daily posts, select the RSS button, or select See it First under the Facebook Following tab.

*As an Amazon Associate I earn from qualifying purchases. That means if you follow a link (generally to a book) from my page to an Amazon page, I get a tiny percentage of any purchase you may make.