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Select element(s) to query and enter sample value(s):

Strontium (87Sr/86Sr) central 50%
Strontium (87Sr/86Sr) central 90%
Oxygen δ18OPO4  ‰(VSMOW) human enamel
Oxygen δ18Ocarb  ‰(VSMOW) human enamel
Oxygen δ18Ocarb  ‰(VPDB) human enamel
Oxygen δ18O   ‰(VSMOW) drinking water
Sulphur δ34S‰ (VCDT) plants
Lead  206Pb/204Pb minerals