Chapter 12 (1)

Chapter 12(1) - locality and the strata at another Eon-The first three Archean Proterozoic Phanerozoic eons constitute the Precambrian Precambrian

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Chapter 12 Uniformitarianism- physical processes we observe today also operated in the past and were responsible for the formation of the geologic features we see in outcrops Superposition- in a sequence of sedimentary rock layers, each layer much be younger than the one below, for a layer of sediment cannot accumulate unless there is already a substrate on which it can collect Fossil Assemblage: the group of fossil species Fossil Succession: the predictability of fossil distribution, which allows geologists to arrange fossil species in a progression from older at the bottom to younger at the top Correlation: a process in which one defines the age relationships between the strata at one
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Unformatted text preview: locality and the strata at another Eon-The first three, Archean, Proterozoic, Phanerozoic eons constitute the Precambrian Precambrian: same as above Era: Phanerozoic subdivided into Paleozoic, Mesozoic, and Cenozoic Radiometric dating: the science of dating geological materials in years Radioactive decay: Radioactive isotopes are unstable: after a given time, they undergo a change called radioactive decay which converts them into a different element Parent isotope: The isotope that undergoes decay Daughter isotope: the decay product of radioactive decay Half-life: How long it takes for half of a group of isotopes to decay Eon -> Era ->Period ->Epoch...
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This note was uploaded on 02/01/2012 for the course GEOLOGY 100 taught by Professor Lepre during the Fall '11 term at Rutgers.

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