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Lecture Notes for GEOS 1014 - The Earth & Life Through Time with Xiao at Virginia Tech (VT)

Notes Information

Material Type:Review Sheet 1
Professor:Xiao
Class:GEOS 1014 - The Earth & Life Through Time
Subject:Geosciences
University:Virginia Polytechnic Institute And State University
Term:Fall 2006
Keywords:
  • Transform Fault
  • Index Fossils
  • A Transform Fault
  • Age of the Earth
  • Age of Earth
  • Catastrophism
  • Different Stages
  • Geothermal Gradient
  • Uniformitarianism
  • Unconformity
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Review Sheet: Part 1 Geological Time Scale: 1) all eons and eras, 2) Phanerozoic periods, 3) Cenozoic epochs, and 4) the age boundaries between Proterozoic and Phanerozoic, between Paleozoic and Mesozoic, and between Mesozoic and Cenozoic. Uniformitarianism and catastrophism Neptunism and Plutonism Steno’s three principles (horizontality, lateral continuity, superposition) Cross-cutting and inclusion relationships Angular unconformity and parallel unconformity How did Lord Kelvin estimate the age of the Earth? Why did his calculation overestimate the age of the Earth? Geothermal gradient Conduction vs. convection Atomic structure Electron, proton, neutron Isotope Radioactive decay Half-life (t1/2) and decay constant (λ) α-decay, β-decay, electron capture Pb-Pb method (understand how the 207Pb/206Pb ratio changes with age) Isochron method (understand the relationship between sample age and slope of isochron) 14 C method and how to calibrate 14C dating Bonding (ionic, covalent, metallic, and van der Waals)...

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