GEOLOGICAL TIME SCALE Section 18.1,18.2 By: Christian Flores and Jordan.
Determining Relative Age Section 17.1 by Andrea Robson and Christian Eib.
How Old is the Earth? 1654: Archbishop James Ussher of Ireland studied the timing of biblical events described in the Old Testament, and concluded that.
© Fall 2005, Pflugerville ISD, 8th Grade 8th Grade Science.
Whos First? Copyright © Houghton Mifflin Harcourt Publishing Company What is relative dating? Scientists try to find out the order in which events happened.
Unit 2 Lesson 2 Relative Dating Copyright © Houghton Mifflin Harcourt Publishing Company.
Chapter 13
23.6 Earth’s History Layers of rock are deposited horizontally, like the layers of the Grand Canyon shown here.
SI. A) Relative age: the age of rock compared to the ages of other rocks above or below it in a sequence of rock layers.
Chapter Menu Chapter Introduction Lesson 1Lesson 1Geologic Time Lesson 2Lesson 2Ancient Earth Lesson 3Lesson 3The Cambrian Explosion Chapter Wrap-Up.
Petrified Remains
SCI/245. Basement rocks were detached from the African Plate when the Pangaea rifted and had moved closer to the North American Plate. The formation of.
