1. (Discussion - The Geologic Time Scale – Part 1)
Tuesday, November 28, 2017
(Discussion - The Geologic Time Scale – Part 1)

2. The Launch Pad Tuesday, 11/28/17
What are the names of the eons if we consider there to have been only two in Earth’s history?
the Precambrian Eon and the Phanerozoic Eon
Precambrian – 3958 million years
Phanerozoic – 542 million years
If the Earth is millions years old, how many years did each eon occupy?
What percentage of Earth’s history did each occupy?
Precambrian – 88%, Phanerozoic – 12%

3. Remediation for Quiz 7 runs through Thursday at 5:00!
Announcements
Remediation for Quiz 7 runs through Thursday at 5:00!

4. F2 S1 F3 F4 QUIZ 7 Overdue Thursday Friday 11/16 Last Day Accepted
Assignment
Summative or Formative #
Date Issued
Gone Missing Day
Last Day Accepted
WS – Mountain Building and Related Incidents F2
11/13
Friday
Overdue
QUIZ 7 S1
11/16
Thursday
XC Thanksgiving Puzzles F3
11/17
N/A
eWS - The Geological History of Earth F4
11/27

5. Discussion The Geologic Time Scale – Part 1
See notes on class website dated Tuesday, 11/28.