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Fraction Modern (Fm) Calculations
• Recalculate Fm with a δ13C correction

• Calculate Δ14C from a given collection year


 
NOSAMS Home > Calculate Fm with a new δ13C correction

Calculate Fm with a revised δ13C correction factor


Fmrev = Fm x [ ( 1 + 0.001 x δ13Corig ) / ( 1 + 0.001 x δ13Cnew ) ] 2

Fmrev = Revised Fraction Modern
δ13Corig = Original δ13C value used to correct Fm
δ13Cnew = New correction for revised Fraction Modern

Enter the following in all fields:
Fm:
δ13C:
δ13Cnew:



 
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