Class Notes (836,562)
Canada (509,854)
EARTHSC 2GG3 (199)
Lecture 5

Earth Science - Lecture 5 Notes.docx

2 Pages
90 Views
Unlock Document

Department
Earth Sciences
Course
EARTHSC 2GG3
Professor
Sergei Basik
Semester
Fall

Description
Lecture 5 September 16, 2013 EARTHQUAKES: CAUSES AND CHARACTERISTICS Causes of Earthquakes  Plates are part of the crust  There can be long/short fractures in the crust  Faults can be boundaries between plates  Usually fractures are in the middle  Faults are classified by the way the rocks slide on either side: o Normal faults: slips below the normal level of land o Revers/Thrust faults: move up above the normal level of land o Strike-slip faults: move horizontally (not up or down) The Elastic Rebound Theory  Made by Henry F. Reid (1910)  Earthquakes involve an “elastic rebound” of previously stored elastic stress  Plates bend and it creates stress/strain  Stress and strain are released during the earthquake when the plate breaks Tectonic Environments of Faults  Earthquakes and faults are associated with plate boundaries  Strike/slip faults are associated with transform boundaries (tectonic boundaries)  Revers/thrust faults are associated with convergent boundaries (areas with huge earthquakes – plates coming together)  Normal faults are associated with divergent boundaries (plates going away from each other) Earthquake Waves  (Only know this slide – not what is in the textbook)  Two types of waves Body Waves  Primary Waves: o Push and pull the rock they go through o Happen in the crust not on the surface  Secondary Waves: o Slower o Can change the structure of th
More Less

Related notes for EARTHSC 2GG3

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