quiz_1_Feb_12_answers

quiz_1_Feb_12_answers - GEO 102 page#1 Quiz#1(Feb 12 your...

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GEO 102 Quiz #1 (Feb. 12) ANSWERS your name your ID# page#1 quiz version # Answers 1) The key local tectonic events happened in the order: e a) nothing much ever happened around here b) Rifting to form the Atlantic, then the Grenville, Taconic, Acadian, & Alleghenian orogenies c) the Alleghenian, Taconic, Acadian, & Grenville orogenies, then rifting to form the Atlantic d) The Grenville & Taconic orogenies affected around here, but not the Alleghenian e) the Grenville, Taconic, Acadian, & Alleghenian orogenies, then rifting to form the Atlantic 2) North American plate motion is about e a) 20 microns/year b) 20 m/year c) 20 km/hour d) 200 km/year e) 2 cm/year 3) The absolute time scale of geology was established using c a) paleomagnetism b) geochemistry c) radioisotopes d) paleontology e) geophysics 4) The heavier elements in the Earth (and in you) were formed: b
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