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Test #2 Review - Review Sheet for Historical Geology Exam...

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Review Sheet for Historical Geology Spring 2011 Exam Two CURRENT EVENTS Archean and the Solar System -chapter 8 Archean –most of Earth’s History 4.6 bya to 700 mya 80% of Earth’s history Solar Nebular Hypothesis Know the planets! Terrestrial & Gaseous Meteorites, Asteroids & Comets Star evolution 5 stages 4 forces responsible for life Earth Atmosphere/biosphere/hydrosphere Composition of early Earth crust Komatite/Basalt Granites formed from partial melting -mafic to felsic Composition of early atmosphere CH4 , NH3 , CO2, H2Ovapor Archean rock types and what they represent BIFs, Greenstone belts, and Gneiss belts Essential components for life Protein, nucleic acid, organic compounds, lipid membrane Importance of Miller & Urey Amino acids -20 occur in life Archeobacteria Cyanobacteria –Stromatolites Eubacteria Algae and Eubacteria Procaryotes & Eucaryotes Anaerobic & Aerobic organisms Where did life begin? Proterozoic – chapter 9 42% of Earth history Difference of Proterozoic day with present day Paleoproterozoic Rodinia Wopmay orogeny Stages of the formation of North America
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