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notes from april 18

by: samantha Flavell

notes from april 18 GEO 100

samantha Flavell
SUNY Oswego
GPA 3.8

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About this Document

these are the notes which were covered on april 18
Physical Geology
Rachel Lee (P)
Class Notes
25 ?




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This 2 page Class Notes was uploaded by samantha Flavell on Friday April 22, 2016. The Class Notes belongs to GEO 100 at State University of New York at Oswego taught by Rachel Lee (P) in Fall 2015. Since its upload, it has received 19 views. For similar materials see Physical Geology in Geology at State University of New York at Oswego.


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Date Created: 04/22/16
April 18, 2016 Geo 100­800 Prof. Nandini Kar Review: Midterm 3 *relative and absolute age *principles of relative dating *uniformity v. Disconformity v. Nonconformity *radioactive decay           ­1/2 life parent isotope daughter isotope cosmogenic isotope *radioactive decay    ­igneous rock (age of formation) ­metamorphic rock ­sedimentary rock *metamorphosis       ­metamorphic process (recrystallization, phase change, neocrystallization, pressure  solution, deformation *prograde v retrograde  *metamorphic facies *index minerals *metamorphic environment *exhumation Deformation and structure *what us deformation?        ­brittle and ductile deformation *strike and dip *difference between fault and fracture *types of faults      ­hanging wall and footwall *types of faults and what kind of stress forms them *fault system *fault recognition *types of folds *fold description *plunging and non­plunging fold Orogeny aka mountain building *concept of isostasy and crustal root           ­importance of density            ­isostatic adjustment *processes of mountain building *effect of erosion  Earthquakes *elastic rebound theory *focus and epicenter *seismic wave         ­body waves: p and s waves         ­surface waves: L and R waves         ­types of motion by different types of waves         ­comparison of amplitudes of waves Earthquake *seismic wave *seismometers and seismogram *quantifying earthquake intensity     ­Richter scale     ­moment magnitude scale     ­modified Mercalli intensity scale *effects of earthquake      ­liquifiction       ­tsunami *earthquake prediction Earth structure *seismic waves speed in different medias *reflection and refraction of waves


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