Cenozoic recent life mammals modern marine fauna

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Cenozoic (Recent Life) — Mammals, Modern marine fauna (foraminifera) Periods are Tertiary (before Ice Ages) and Quaternary (ice ages) Primary and secondary have been long replaces Rocks of western Washington are Tertiary and Quaternary
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Age of the Earth Kelvin and a basis in heat flow (set at 20 million years) Problem of fitting all of evolution in this time Rutherford and the introduction radioactive decay Added a head source, pushed ages back to 4.5 billion years
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Absolute Time Basis on radiometric dating (see Rahn chapter 1) Common dating tools 14 C, K-Ar, Rb-Sr,Uranium decay series
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CEE 437 Structural Geology World Stress Brittle and Ductile Deformation Faults and Joints Folds
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Representing a Plane Strike and Dip Quadrant Convention (N 60 E, 45 SE) 360 o Convention (120, 45) Right hand rule: dip 90 o clockwise of strike) Pole trend and plunge Dip vector does not discriminate strike of vertical planes
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Brittle Versus Ductile Behavior Strain Rate Dependence Non-elastic Deformation Mechanisms recrystallization lattice dislocations pressure solution and redeposition
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World Stress Map
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