Module 1: Stories of the Past (Stories of a Changing World):

Earth Science Essentials

Title: Braided river in Alaska

Transgressions and Regressions

This unit examines how to infer past advance and retreat of the ocean through examination of rock layers. Individual lessons will open in a new page--simply close the page when done and return here.

10/27/2017--pictures and text copyright Russ Colson