Slide 1How Old is the Earth? 1654: Archbishop James Ussher of Ireland studied the timing of biblical events described in the Old Testament, and concluded that the the world…

1.Geologic Time and Principles of Stratigraphy2. Recall Archbishop James Usher (1581-1665) who made a first attempt to calculate the age of the earth using theBible. Date:…

Chapter One Introduction to Geology Geology literally means "study of the Earth." Physical geology examines the materials and processes of the Earth. Historical…

Slide 1 Chapter 21 Fossils & the Rock Records Produced by S. Koziol 11-4-2014 Slide 2 21.1 The Geological Time Scale Objectives Describe the geological time scale Distinguish…

Slide 1 Life and Extinction on Earth In ~ 1.5 hrs! Slide 2 Life and Extinction on Earth From: Sepkoski and Raup, 1982; Erwin et al., 1987 Diversity over time: Marine organisms…

Geologic Time Geologic Time 01: Geologic Time Scale Huge sections of time are broken down into smaller groups of time: Eons, Eras, Periods, and Epochs Eon is the largest…

Geologic time Geologic time How do we know when things happened? 1 Goals Students will write about, talk about, and understand the principles of relative dating and original…