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DIATOM METHODS | δ18O Records.

Research output: Contribution in Book/Report/ProceedingsEntry for encyclopedia/dictionary


Publication date2006
Host publicationEncyclopedia of Quaternary Science
EditorsScott A. Elias
Number of pages10
ISBN (Print)978-0-444-52747-9
<mark>Original language</mark>English


Diatom siica is a form of biogenic opal that contains oxygen isotopes which can be used in lacustrine and marine paleoenvironmental studies. Diatom δ18O is a useful indicator of paleoenvironmental conditions, reflecting either the temperature or the oxygen isotope composition of the water in which the diatoms grew. In lakes, the latter is a function of evaporation or changes in the source of rainfall. Analysis of diatom δ18O requires highly concentrated samples of almost pure diatom frustules.

Bibliographic note

d18O records from diatoms.