δ13C

Also known as delta-C-13, d13C

In geochemistry, paleoclimatology, archaeology, and paleoceanography '''δC''' (pronounced "delta carbon thirteen") is a normalized ratio of the two stable isotopes of carbon—C and C—reported in parts per thousand (per mille, ‰).

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Article

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Contents

Reference standard
Causes of ''δ''<sup>13</sup>C variations
Geologic significance
Positive and negative excursions
Major excursion events
See also
References
Further reading

In geochemistry, paleoclimatology, archaeology, and paleoceanography '''δC' (pronounced "delta carbon thirteen") is a normalized ratio of the two stable isotopes of carbon—C and C—reported in parts per thousand (per mille, ‰).

The definition is, in per mille: \delta \ce{^{13}C} = \left( \frac{(\ce{^{13}C}/\ce{^{12}C})_\mathrm{sample}}{(\ce{^{13}C}/\ce{^{12}C})_\mathrm{standard}} - 1 \right) \times 1000