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Who’s Fault is it?

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

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Who’s Fault is it?

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  1. Who’s Fault is it? By: Mai Vo, Gabby Amini, and Jessie Bacon

  2. Definition of Fault • Fault: a fracture in Earth’s lithosphere along which blocks of rock move past each other

  3. 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)

  4. 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

  5. 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 three-dimensional falling of rock units

  6. 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

  7. Who did what? • Mai- Strike- slip fault slide • Gabby- Normal fault slide • Jessie- Reverse fault slide • All- Power point, props • We all worked at Mai’s house

  8. 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

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