Stable isotope constraints on vein formation and fluid evolution along a recent thrust fault in the Cascadia accretionary wedge

@inproceedings{Sample2010StableIC,
  title={Stable isotope constraints on vein formation and fluid evolution along a recent thrust fault in the Cascadia accretionary wedge},
  author={James C. Sample},
  year={2010}
}
  • James C. Sample
  • Published 2010
  • Geology
  • In situ secondary ionization mass spectrometry (SIMS) analyses of oxygen isotopes in authigenic calcite veins were obtained from an active thrust fault system drilled at Ocean Drilling Program (ODP) Site 892 (44°40.4′N, 125°07.1′W) along the Cascadia subduction margin. The average δ 18 O PDB value of all samples is −9.9‰ and the values are the lowest of any measured in active accretionary prisms. Ranges in individual veins can be as much as 19.6‰. There is an isotopic stratigraphy related to… CONTINUE READING

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