Difference between revisions of "Stable oxygen isotopes"
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δ<sup>18</sup>O may be measured on: | δ<sup>18</sup>O may be measured on: | ||
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Latest revision as of 17:29, 15 January 2016
Oxygen has three naturally-occuring stable isotopes: 16O, 17O, 18O, with 16O being the most abundant (99.762%).
Two international reference standards are used to report variations in oxygen isotope standards: PDB and SMOW. The use of the PDB standard in reporting oxygen isotope composition is restricted to carbonates of low-temperature origins (e.g., oceanic, lacustrine ). The conversion between SMOW and PDB scales is given by:
δ18O may be measured on:
- the shells of foraminifera