New isotopic temperature estimates for early silica diagenesis in bedded cherts

R. K. Matheney, L. P. Knauth

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

Opal-CT samples from the siliceous member of the Miocene Monterey Formation, California, yield δ 18 0 values that contribute to mounting evidence that silica diagenesis in bedded chert can occur at much lower temperatures than previously supposed. Hydration waters can significantly reduce the bulk δ 18 0 of opal-CT and special analytical techniques and consideration of water/rock ratios are warranted for isotope thermometry of diagenetic silica transformations. -from Authors

Original languageEnglish (US)
Pages (from-to)519-522
Number of pages4
JournalGeology
Volume21
Issue number6
DOIs
StatePublished - Jan 1 1993

ASJC Scopus subject areas

  • Geology

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