Steve Rowland (Geoscience) published "The Cambrian of the Grand Canyon: Refinement of a Classic Stratigraphic Model" in GSA Today with Carol Dehler, professor at Utah State University; James Hagadorn of the Denver Museum of Nature & Science; Frederick Sundberg, Karl Karlstrom and Laura Crossey of the University of New Mexico; and Mark Schmitz of Boise State University.

A study focuses on the thick interval of strata called the Tonto Group, which is exposed toward the bottom of the Grand Canyon. These strata are also exposed on Frenchman Mountain, on the east side of Las Vegas valley. Rowland was recently instrumental in naming one of the formations within the Tonto Group. It is the Frenchman Mountain Dolostone, a thick layer on Frenchman Mountain which extends eastward throughout the Grand Canyon.

Rowland along were able to apply current-day stratigraphic, depositional and paleontological models, data and technological tools to update this sedimentary record.