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Table 6
Stable isotope data for fish teeth at Créchy and Montaigu-le-Blin. The calculated temperature offsets were based on the value given by the preceding layers for a constant water δ18O value. Ref: starting reference level for the calculated temperature variations.
Age | Biozone | Samples from contiguous layers | Value of δ18O (SMOW) | Temperature profit and loss calculations | Samples from single layers | Value of δ18O (SMOW) | Temperature profit and loss calculations |
---|---|---|---|---|---|---|---|
Aquitanian | MN2 | H | 21.6 | – | |||
G | 21.7 | +2° | |||||
Oligocene/Miocene boundary |
MP30/MN1 | F | 22 | +1° | |||
f | 22.3 | −3° | |||||
Chattian | MP30 | E | 22.2 | −2° | e | 22 | +1° |
D | 21.8 | – | d | 22.7 | +3° | ||
C | 21.8 | +1° | |||||
B | 21.7 | −4° | c | 22.5 | −3° | ||
A | 21.2 | Ref | b | 21.8 | +2° | ||
a | 22.4 | Ref |
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