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Why Vienna pee dee belemnite standard vpdb called So?

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Anonymous

∙ 15y ago
Updated: 11/2/2022

VPDB (Vienna PeeDee Belemnite) is a laboratory derived standard based off the PeeDee Belemnite Standard. This standard came from a formation in South Carolina that was high in 12C/13C ratios that most naturally occurring facies. In short, when PDB ran out, they made a synthetic version in a lab in Austria.

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∙ 15y ago
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What is Vienna pee Dee belemnite standard vpdb?

The common reference for delta 13C Marine Carbonate Standard was obtained from a Cretaceous marine fossil, Belemnitella americana, from the PeeDee Formation in South Carolina. This material has a higher 13C/12C ratio than nearly all other natural carbon-based substances. For convenience it is assigned a delta 13C value of zero, giving almost all other naturally-occurring samples a positive delta value.The original sample was used up long ago, but a Vienna-based laboratory calibrated a new reference sample to the original fossil, giving rise to the widespread use of the term Vienna- PeeDee Belemnite standard, abbreviated to V-PDB.


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