Working with Radiocarbon Calibration Curves -- a final exercise
Page 10 of 12

The table below the C-14 Decay curve and the Correction curves contains the % Modern values for 4 samples.

Drag on the interactive C-14 decay curve to determine the Radiocargon age of the sample from its % Modern value.

Then use the Correction Curves to complete the table. When you are finished, click "Next" for your "CERTIFICATE of COMPLETION" as a Virtual Geochronologist.

C-14 Decay Curve

Correction Curves
0–400 BP
400–1000 BP
900–1500 BP
1400–2000 BP
1900–2500 BP
2400–3000 BP
2900–3500 BP
3400–4000 BP
3900–4500 BP
Sample
% Modern
(=% C-14)
Radiocarbon Age (BP)
Corrected Radiocarbon Age
Chaco Canyon, New Mexico: Axe handle
86%
1.
1200
5.
1125
Fragment of Roman Gladiator leather harness
77%
2.
2200
6.
2200
Wood fragments from Island of Thera ("Atlantis")
63%
3.
3800
7.
Buried tree stump New York glacial deposit
17%
4.
14700
Too old for correction