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

Earth Science Essentials

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.

• Transgressions and Regressions Lecture (6:33 min)


• Transgressions and Regressions Text, interactive text


• Transgressions and Regression Explain it challenge. Writing exercise.


• Transgressions and Regressions Common Q/A, text


• Transgressions and Regressions--Cool Stuff, text


• Geological History in World Building. Writing exercise.


• Stratigraphy and Paleogeographic Mapping lab


• Stratigraphy and Paleogeographic Mapping lab Walk-Through

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