GSA Today
Volume 34, Issue 2
![Cover image](/gsatoday/archive/34/2/cover/i1052-5173-34-2_cvr_img.png)
Carboniferous strata of the Paradox and Honaker Trail formations in a canyon carved by the San
Juan River. Photo taken west of Goosenecks State Park in Utah, USA, by Cedric Hagen.
© The Geological Society of America, Inc.