Table 1 Farmed calcite and dripwater δ18O data.

From: Ubiquitous karst hydrological control on speleothem oxygen isotope variability in a global study

Date range (MM/YY)

Drip site

Mean calcite δ18O (‰VPDB)a

Mean water δ18O (‰VSMOW)a,b

αcalcite-water

1000lnαcalcite-water (‰)

10/08–04/11

1A

−3.27 ± 0.09 (3)

−4.04 ± 0.07 (21)

1.03172 ± 0.00003

31.22 ± 0.03

06/16–10/17

1A

−2.88 ± 0.01 (2)

−3.80 ± 0.03 (14)

1.03188 ± 0.00001

31.38 ± 0.01

06/16–10/17

1IV

−3.47 ± 0.02 (2)

−4.16 ± 0.06 (14)

1.03163 ± 0.00002

31.14 ± 0.02

10/08–04/11

2B

−3.09 ± 0.10 (2)

−4.09 ± 0.11 (20)

1.03195 ± 0.00004

31.45 ± 0.04

05/11–12/11

2B

−2.90 ± 0.10 (2)

−3.88 ± 0.03 (6)

1.03193 ± 0.00004

31.43 ± 0.04

10/08–04/11

2E

−3.86 ± 0.10 (2)

−4.88 ± 0.04 (22)

1.03197 ± 0.00003

31.47 ± 0.03

05/11–12/11

2E

−3.80 ± 0.19 (2)

−4.83 ± 0.03 (6)

1.03198 ± 0.00005

31.48 ± 0.05

01/12–10/12

2E

−3.82 ± 0.13 (3)

−4.79 ± 0.02 (5)

1.03193 ± 0.00004

31.43 ± 0.03

06/16–10/17

2E

−3.80 ± 0.30 (2)

−4.56 ± 0.05 (14)

1.03170 ± 0.00008

31.21 ± 0.08

Empirical bulk fractionation factor for Golgotha Cave (n = 9)

1.03185 ± 0.00013

31.36 ± 0.13

  1. Mean δ18O values for farmed calcites and corresponding dripwater collected at each site between 2008–2017. The calculated fractionation factor between calcite and water is shown for each interval, as well as an overall mean value calculated (termed the empirical bulk fractionation factor).
  2. a±1 standard deviation; value in brackets indicates number of observations.
  3. bCalculated using numerically smoothed values as for Fig. 5c.
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