In this issue
The Geological Mind
Grand Canyon, USA: Lumping and Splitting to Make Sense of a (Somewhat) Predictable World
Basil Tikoff and Thomas F. Shipley
• Volume 35, Issue 1
Table of Contents
Departments
9 - GSA News & Updates
20 - GSA Section Meetings
24 - GSA Center for Professional Excellence
29 - 2026 GSA Calendar Photo Search
In Every Issue
28 - My Stories, My Science
30 - Geology through the Lens
31 - GSA Foundation
