plot the earthquakes on the map where do earthquakes occur?
TRANSCRIPT
![Page 1: Plot the earthquakes on the map Where do Earthquakes occur?](https://reader033.vdocument.in/reader033/viewer/2022061305/551426ea550346dd488b5ac6/html5/thumbnails/1.jpg)
Plot the earthquakes on the map
Where do Earthquakes occur?
![Page 2: Plot the earthquakes on the map Where do Earthquakes occur?](https://reader033.vdocument.in/reader033/viewer/2022061305/551426ea550346dd488b5ac6/html5/thumbnails/2.jpg)
EWWE
N
S
![Page 3: Plot the earthquakes on the map Where do Earthquakes occur?](https://reader033.vdocument.in/reader033/viewer/2022061305/551426ea550346dd488b5ac6/html5/thumbnails/3.jpg)
![Page 4: Plot the earthquakes on the map Where do Earthquakes occur?](https://reader033.vdocument.in/reader033/viewer/2022061305/551426ea550346dd488b5ac6/html5/thumbnails/4.jpg)
An earthquake is any sudden movement of the Earth’s Crust
![Page 5: Plot the earthquakes on the map Where do Earthquakes occur?](https://reader033.vdocument.in/reader033/viewer/2022061305/551426ea550346dd488b5ac6/html5/thumbnails/5.jpg)
Stress is:•A force per unit area•A force acting on rock to change the shape or volume
Graph courtesy of: http://geology.csupomona.edu/dwtarman/alert%20files/structural%20topics/stress.htm
![Page 6: Plot the earthquakes on the map Where do Earthquakes occur?](https://reader033.vdocument.in/reader033/viewer/2022061305/551426ea550346dd488b5ac6/html5/thumbnails/6.jpg)
* 3 Types:
Result of 2 opposite forces
Result of at least 2 opposite forces; may be as many as 4
forces
Result of 2 opposite forces
![Page 7: Plot the earthquakes on the map Where do Earthquakes occur?](https://reader033.vdocument.in/reader033/viewer/2022061305/551426ea550346dd488b5ac6/html5/thumbnails/7.jpg)
Plastic Deformation
Results in folded rock but not earthquakes
Elastic Deformation
Leads to Earthquakes
![Page 8: Plot the earthquakes on the map Where do Earthquakes occur?](https://reader033.vdocument.in/reader033/viewer/2022061305/551426ea550346dd488b5ac6/html5/thumbnails/8.jpg)
* A bend in rock
* Does NOT result in earthquakes
* Occurs when rock is in plastic state
![Page 9: Plot the earthquakes on the map Where do Earthquakes occur?](https://reader033.vdocument.in/reader033/viewer/2022061305/551426ea550346dd488b5ac6/html5/thumbnails/9.jpg)
* Anticline: convex (upward) fold
* Syncline: concave (downward) fold
Diagrams courtesy of:: http://www.glossary.oilfield.slb.com/Display.cfm?Term=syncline
![Page 10: Plot the earthquakes on the map Where do Earthquakes occur?](https://reader033.vdocument.in/reader033/viewer/2022061305/551426ea550346dd488b5ac6/html5/thumbnails/10.jpg)
•A SURFACE ALONG WHICH ROCKS BREAK AND SLIDE PAST EACH OTHER
* RESULTS IN AN EARTHQUAKE
Photos courtesy of: http://pubs.usgs.gov/gip/earthq1/how.html
![Page 11: Plot the earthquakes on the map Where do Earthquakes occur?](https://reader033.vdocument.in/reader033/viewer/2022061305/551426ea550346dd488b5ac6/html5/thumbnails/11.jpg)
![Page 12: Plot the earthquakes on the map Where do Earthquakes occur?](https://reader033.vdocument.in/reader033/viewer/2022061305/551426ea550346dd488b5ac6/html5/thumbnails/12.jpg)
Once that happens the rock breaks (faults), movement occurs along the fault and energy is released (earthquake).
Rocks under pressure will continue to bend and deform until their elastic limit is reached.
![Page 13: Plot the earthquakes on the map Where do Earthquakes occur?](https://reader033.vdocument.in/reader033/viewer/2022061305/551426ea550346dd488b5ac6/html5/thumbnails/13.jpg)
Photo courtesy of: http://www.thetech.org/exhibits/online/quakes/faults/cycles1.html
![Page 14: Plot the earthquakes on the map Where do Earthquakes occur?](https://reader033.vdocument.in/reader033/viewer/2022061305/551426ea550346dd488b5ac6/html5/thumbnails/14.jpg)
![Page 15: Plot the earthquakes on the map Where do Earthquakes occur?](https://reader033.vdocument.in/reader033/viewer/2022061305/551426ea550346dd488b5ac6/html5/thumbnails/15.jpg)
Pressure Changes
Excessive Sediment Layers-crack plates
Plates undergo vertical movement above bumps in the mantle
![Page 16: Plot the earthquakes on the map Where do Earthquakes occur?](https://reader033.vdocument.in/reader033/viewer/2022061305/551426ea550346dd488b5ac6/html5/thumbnails/16.jpg)
Most earthquakes occur at plate boundaries.
Transform boundaries experience the most quakes