Transcript It`s Not My Fault

Who’s Fault is it?
By: Mai Vo, Gabby Amini, and Jessie Bacon
Definition of Fault
• Fault: a fracture in Earth’s lithosphere along
which blocks of rock move past each other
The Fault Under Horizon
• Named: Horizon Fault
• Located completely beneath Horizon School
• Because Horizon is on the fault the earthquake would cause
thousands of dollars in repairs
• The fault would make Horizon crack in half and collapes
• It is a strike-slip fault ( you will learn what this fault is in a
moment)
Strike- slip Fault
• Example: San Andrea’s Fault
• Definition: a strike-slip fault is a fault in which the surface
on opposites of the fault plane have moved horizontally and
parallel to the strike of fault
• A strike- slip fault is a transformation fault
• Described to move “side by side”
• 2 types of strike- slip faults are: left-lateral (meaning that
it moves horizontally to the left) right- lateral (moves
horizontal to the right)
• Haiti’s earthquake was caused by a left- lateral fault
Normal Fault
• Example: Great Rift Valley of Africa
• Definition: It is a fault in which the
hanging wall has moved downward
• Because the hanging wall moves downward,
younger rocks are placed over the older rock
• Over time they can form mountains and valleys
• Earthquakes along faults are common near
boundaries where tectonic plates are moving
apart
• They typically fall at 40 and 70 degree
angles, low angled ones fall at 10 degrees or
less and have very interesting problem for
structural geologists
• Structural geologists : study of the threedimensional falling of rock units
Reverse Fault
• Example: The Himalaya Mountains rise in an area where the Eurasia
Plate is being pushed by the Indian Plate; it brings a lot of earthquakes
• Definition: Along the reverse fault a block of rock that the fault plane
moves up which is relative to another block
• They can occur near collision zone boundaries between plates
• The movement of rocks along normal and reverse faults push up
mountains which forms deep valleys
Who did what?
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Mai- Strike- slip fault slide
Gabby- Normal fault slide
Jessie- Reverse fault slide
All- Power point, props
We all worked at Mai’s house
Resources
Normal Faults, Geology of the National Parks, February 4th, 2010,
http://www.uoregon.edu/~millerm/Nfaults.html
Michael Ritter, Types of Faults, The Physical Environment, February 4, 2010
http://www.uwsp.edu/geo/faculty/ritter/geog101/textbook/tectonics_landforms/faulting_p2.html
Unknown Author, Fault Geology, Wikipedia The Free Encyclopedia, February 7, 2010
http://en.wikipedia.org/wiki/Strike_slip_fault
Paul Preuss, Living on the Fault line, Energy and Earth Sciences, February 8, 2010
http://www.lbl.gov/Science-Articles/Research-Review/Highlights/1998/EES_fault.html
Multiple Authors, The Changing Earth, McDougal Littell, Washington D.C., 2007
Unknown Author, Normal Fault & Reverse Fault, Structural Geology, February 7, 2010,
http://facweb.bhc.edu/academics/science/harwoodr/Geol101/study/structur.htm
Mai’s house, supplies and parents