GEOS 100EXAM 412

GEOS 100EXAM 412 - GEOS 100 Instructor: Delwar Ahmed EXAM 4...

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GEOS 100 EXAM 4 12/03/2003 Instructor: Delwar Ahmed NAME:_______________________CRS ID: __ __ __ __ ANSWER KEY Correct answers are highlighted in blue . 1 point each IMPORTANT Some questions have two correct answers. Fill two bubbles for correct answers in the answer sheet to get full credit. 1) 1) [ T F] Normal faults form in response to horizontal, tensional stresses that stretch or elongate the rocks. 2) 2) [ T F] In a reverse fault, the hanging wall block moves up relative to the footwall block. 3) 3) [ T F] The oldest, sedimentary rock strata are exposed along the axial parts of deeply eroded anticlines 4) 4) [ T F] Horizontal, compressive deformation involves shortening and thickening of the crust. 5) 5) [ T F] Fractures in rock that have not involved any fault slippage are called joints. 6) 6) [ T F] Plastic deformation occurs more readily in warm rock than in cool rock. 7) 7) Which one describes a normal fault? A) A) the hanging wall block below an inclined fault plane moves downward relative to the other block B) B) the footwall block below an inclined fault plane moves downward relative to the other block C) C) the hanging wall block above an inclined fault plane moves downward relative to the other block D) D) the footwall block above an inclined fault plane moves upward relative to the other block. 8) 8) Which one , permanent strains (deformations) in rocks are products of horizontally directed, tensional stresses? A) normal faults B) crustal thickening C) reverse fault D) crustal thickening 9) 9) Which two , permanent strains (deformations) in layered sedimentary rocks are evidence for horizontal compression and shortening? (mark both choices) A) thrust fault B) strike-slip fault C) horsts and grabens D) anticlines and synclines 10) 10) What is a transform fault ? A) A) a strike-slip fault that forms the boundary between tectonic plates B) B) a dip-slip fault connecting an anticline with a syncline C) C) a reverse fault that steepens into a thrust fault D) D) the rift-bounding faults on a mid-ocean ridge
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11) 11) Which well known fault in California is the boundary between the North American and Pacific plates? A) A)
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GEOS 100EXAM 412 - GEOS 100 Instructor: Delwar Ahmed EXAM 4...

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