

433 articles, plus atlases and glossaries to choose from
Herein you will find posts on Earth and planetary sciences, Art and Science and other digressions that focus on resources and science communication for students of all disciplines, but particularly Geology. Post categories-topics are linked to the navigation bar or just head to the Recent Posts in the sidebar.
You can also use the Search tab at top-right of any page or post.
I do this for the love of it. I do not receive any remuneration for the site (and I don’t advertise). The website (geological-digressions.com) is not attached or beholden to any organization.
A number of colleagues have kindly donated images for certain categories of posts. They are all acknowledged, usually in the caption to the image. They are also acknowledged in a Contributors Page.
The How to… articles are designed for Earth Science students, providing outlines of method and theory for some of the basic tasks that geologists undertake in the field and lab. These posts are directed primarily at beginning and undergraduate geology students, and anyone else wanting a reminder or primer.
Peruse the Atlas series for images of different geological environments and processes, modern and ancient.
The Glossaries have been compiled mostly from the article subjects in this website. Links to the relevant posts and other sources are included. There are currently 11 glossaries and about 3400 entries.
The Etymology of Earth Science Words and Phrases looks at the common heritage between geological language and common language. There are currently 500 entries.
And finally, if you would like to know something about me, where I’ve come from, where I’ve been – A geological life
Unless stated otherwise, all images and diagrams are mine, collected over more than 53 years of active geologizing. If you use any of the images on this website, please follow the normal protocols for attribution – for example: Brian Ricketts, Geological Digressions followed by the article link/URL.
Most Popular
- Mohr-Coulomb failure criteria April 3, 2024
- Mohr circles and stress transformation March 23, 2024
- Clay dewatering; smectite dehydration February 17, 2026
- Clays produced by weathering November 28, 2025
- Carbonates in thin section: Molluscan bioclasts January 7, 2022
- Classification of sandstones June 7, 2019
