Class Notes (837,351)
Canada (510,237)
EESA06H3 (568)
Nick Eyles (500)
Lecture 10

Lecture 10 - Ch. 20, The Geological Evolution of Canada

2 Pages
112 Views
Unlock Document

Department
Environmental Science
Course
EESA06H3
Professor
Nick Eyles
Semester
Winter

Description
Lecture 10 - Ch. 20, The Geological Evolution of Canada Monday, March 19, 2012 10:09 AM Exam: Based on Chapters 1-4, 11, 19, 20 and Lectures 10 and 11 (with special emphasis on plate tectonics and Ch. 20!) Geology of North America known for 100 years but what put it together?  Paradigm  Cratons - like the Canadian Shield, each continent has one, inner core of old crystaline rock, rocks that have a long history, pre-Cambrian age (6 million years)  Surrounding cover rocks (surround the craton)  Oceanic crust --> continental crust  You cannot subduct continental crust because it's not dense enough (opposite: obduct) Super continent paradigm 1. Peneplained craton and enlarged continent 2. Early rifting 3. Full ocean basin 4. Subduction zone 5. Closing ocean basin 6. Collision orogeny = A Grand Concept or A Paradigm Fig. 20.4 (ON EXAM)  You will be expected to understand how this figure 'works' for the exam!  Province: region of similar geology (e.g. Superior Province)  Terrane: sections of continent - Rockies are a result of #5 moving against #1 #3: South America left behind this crust (billion years ago) & #4 was left behind by Africa when  Pangea was forming (red rocks in Nova Scotia same as in Africa)  Slave Province was the first part of NA o Acasta gneiss (NWT): 4 billion years old, the oldest continental crust found so far? o Detritel: something that's been derived from something that's been weathered, polycyclic, reused  Fossil ocean crust, pillow basalts (evidence of oceanic crust), in North American crust  Ophiolites: umbrella term for fossil ocean crust (MORs etc.)  Hydrothermal - in pillow ba
More Less

Related notes for EESA06H3

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit