GEOL 303 final study guide

GEOL 303 final study guide - Vic Camp Geol 303 Study Guide...

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Vic Camp Geol 303 Study Guide - Final Exam ● What is the nebular hypothesis : NEBULAR HYPOTHESIS- Belief about earths formation. Stage 1 - contraction of nebula, Stage 2 - flattening and rotation, Stage 3- formation of planetary rings, Stage 4 - acceleration of planetary rings What are the differences between terrestrial and Jovian planets : Terrestrial Planets are the inner planets consisting of Mercury, Venus, Earth, and Mars. They are smaller, have higher surface temperatures, and composed of rocky and metallic material. Jovian planets are the outer planets consisting of Jupiter, Uranus, Neptune, and Saturn. These planets are cooler in temperature, smaller in larger in size, and contain gaseous material. What is the composition of the earth’s tectonic plates? Know the three types of plate boundaries. What types of faults occur at each? What type of volcanism occurs at each? Where is oceanic crust created? . . . destroyed? Where is the asthenosphere located? How does magma differ from lava ? How does basaltic (mafic) magma differ from rhyolitic (felsic) magma? What type of magma is more likely to be associated with a Plinian-type eruption? Why? Know the different types and shapes of volcanoes and examples of each. What impact events (or extinction events) are associated with the Deccan flood basalts? . . . Siberian flood basalts? . . . Tunguska? . . . Chicxulub? What are tektites ? ●Define deformation and stress . DEFORMATION: the changes a rock body undergoes in volume or shape as the result of a force(stress). STRESS: the force that causes the derfomation of rocks. Know the different fault types and the type of stress and directions of movement associated with each. DIP SLIP FAULTS- Occur with vertical motion . 1) Normal dip slip is a result of tension (two forces moving away from eachother, and usually occur at divergent plate boundaries. Occur when the hanging wall moves down in relation to the footwall. 2) Reverse Dip Slip are a result of compression (two forces moving toward one another) and usually occur at convergent plate boundaries. Occur when the hanging wall moves up in relation to the footwall. STRIKE SLIP FAULTS- Occur with horizontal motion and the result of shear stress. They occur at transform plate boundaries(plates sliding past one another). 1) Right stepping - localized area of tension. 2) Left stepping - localized area of compression. Understand why a bend (or step) in strike-slip faults can result in local areas of compression or tension. Understand the concepts of base shear, resonance, and liquefaction . BASE SHEAR= Estimate of the maximum amount of force that will occur due to seismic ground motion at the base of a structure. (soft 1 st story) RESONANCE= Occurs when the motion of the building is nsync with the motion of the seismic wave.
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LIQUEFACTION = Occurs when there is loose ground material with ground water below and an earthquake. During EQ the sediment reorients, the pore holes get smaller(hexagonal
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This note was uploaded on 04/29/2008 for the course GEOLOGY 303 taught by Professor Camp during the Spring '08 term at San Diego State.

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GEOL 303 final study guide - Vic Camp Geol 303 Study Guide...

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