Geology Photos Page - Grand Canyon River Guide

This sample page from Belknap’s Grand Canyon River Guide is a photo guide to identifying canyon rock formations from river level. The top photo shows Navajo Bridges at mile 4.8, labeling the Kaibab, Toroweap, and Coconino formations—marking the first appearance of Coconino Sandstone at river level. The bottom photo, taken at mile 11 near Soap Creek Rapid, highlights formations like Hermit and Esplanade Sandstone, with the canyon rim over 1,100 feet above. These labeled images help river runners visually connect geology to their surroundings, enhancing both navigation and appreciation of the Grand Canyon’s ancient rock layers.