Outcrop along Salsbury Crags near Edinburgh, Scotland, that James Hutton studied as he formed his ideas of geologic time in the late 1700s.

Assignment

1. Read: the study questions for this topic, listed at https://croninprojects.org/Vince/Course/PhysGeol/Geo1405-GeolTime-Q2021.html and keep them in mind as you read the following assignments. Most, if not all, of the answers will be in the reading assignments for this topic.
2. View three short videos by Dave McConnell and friends —
   The Geological History of Earth,
   Unconformities: Finding Missing Time, and
   Numerical Time (Candy and Radioactive Decay).
3. Scan: Earth, chapter 9, section 9.1 Creating a Time Scale: Relative Dating Principles, in its entirety.
4. Scan: Earth, chapter 9, sections 9.2 (Fossils: Evidence of Past Life) and 9.3 (Correlation of Rock Layers).
5. Read: Earth, chapter 9, section 9.4 Numerical Dating with Nuclear Decay (p. 277-281 in the paper version of the text)
6. Read: Earth, chapter 9, section 9.6, The Geologic Time Scale

Mastering Geology Reminder

Complete the Dyamic Study Module called Geologic Time and HW09 by going to Mastering Geology through the Canvas space associated with this lecture section (202130 GEO 1405 01 - The Dynamic Earth)

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