3.13 - Topics for quiz 2-bring calc Weathering Sedimentary...

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Topics for quiz 2-bring calc Weathering Sedimentary rocks Metamorphic rocks Structure (folds, faults, uncomformity) Geologic time Geologic maps(cross-section) o Sequence of events Time Relative/absolute Sequence of events Geologic maps Absolute time -radioactive ‘parent’ changes -the stable ‘dauighter’ by loss of energy and mass at a constant rate relationship between isotopes to absolute age D(number of atoms-daughter)=P(e –1) Pb206=U238=t= Lambda has constant for parent, and you should be able to compute the value of t
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