Reading Strata through Geologic Time

Overview

Starting with the concept of strata—parallel layers of sedimentary rock lying one atop the other—learn how to look at a cliff face and read the strata like an epic adventure. The story can encompass hundreds of millions of years, involving advancing and retreating glaciers, falling and rising seas, the ebb and flow of life, and much else. Work up to the paragon of stratigraphy, the Grand Canyon.