Oxygen isotope evidence for progressive uplift of the Cascade Range, Oregon

@inproceedings{Kohn2002OxygenIE,
  title={Oxygen isotope evidence for progressive uplift of the Cascade Range, Oregon},
  author={Matthew J Kohn and Jennifer L. Miselis and Theodore J. Fremd},
  year={2002}
}
Oxygen isotope compositions of fossil equid teeth in the Cascade rainshadow reveal a V5x decrease in mean N18O since 27 Ma. Isotopic changes are inconsistent with expected effects from global climate change because: (a) the expected isotopic shift to tooth N18O values due to global climate change (V1x) is much smaller than the observed shift, (b) predicted and observed isotopic trends are opposite for Oligocene vs. Miocene samples, and (c) average compositions and ranges in compositions… CONTINUE READING
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