Table 2 Temperature and freshwater contribution to the Cochin estuary reconstructed using clumped isotope ratios and δ18O in seasonal growth bands of V. cyprinoides.

From: Rainfall seasonality on the Indian subcontinent during the Cretaceous greenhouse

Sample ID

δ13C (‰,VPDB)

δ18O (‰,VPDB)

Δ47

Calculated temperature (°C)#

18O water (‰,VSMOW)

Freshwater (%)

ESC1

−8.22

−4.34

0.69

29.6

−0.55

35

ESC2

−6.84

−3.49

0.69

30.1

0.41

13

ESC3

−5.84

−3.28

0.69

30.5

0.69

7

ESC4

−5.96

−3.46

0.70

26.7

−0.24

28

ESC5

−7.56

−4.41

0.68

31.9

−0.18

27

ESC6

−7.21

−3.93

0.71

24.8

−1.08

47

ESC7

−6.30

−3.87

0.68

32.5

0.50

11

ESC8

−5.49

−3.59

0.69

28.9

0.07

21

ESC9

−5.04

−3.39

0.73

20.4

−1.45

56

ESC10

−5.00

−3.47

0.69

30.0

0.40

14

ESC11

−7.07

−4.52

0.72

23.5

−1.94

67

  1. #Dennis et al., 2011(ref.22).
  2. *Grossman and Ku, 1986 (ref.41) modified by Dettman et al., 1999 (ref.12).