New isotopic temperature estimates for early silica diagenesis in bedded cherts

R. K. Matheney; L. P. Knauth

doi:10.1130/0091-7613(1993)021<0519:NITEFE>2.3.CO;2

New isotopic temperature estimates for early silica diagenesis in bedded cherts

R. K. Matheney, L. P. Knauth

Earth and Space Exploration, School of (SESE)

Research output: Contribution to journal › Article › peer-review

70 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 language	English (US)
Pages (from-to)	519-522
Number of pages	4
Journal	Geology
Volume	21
Issue number	6
DOIs	https://doi.org/10.1130/0091-7613(1993)021<0519:NITEFE>2.3.CO;2
State	Published - Jan 1 1993

ASJC Scopus subject areas

Geology

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10.1130/0091-7613(1993)021<0519:NITEFE>2.3.CO;2

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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 ",

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N2 - 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

AB - 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

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New isotopic temperature estimates for early silica diagenesis in bedded cherts

Abstract

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