Table 1 Carbon, oxygen, and hydrogen isotopic compositions as well as CO₂, ¹⁴C, and tritium concentrations of low mineralized Muschelkalk fluids (data compilation from: Ufrecht et al. 2020 and references therein, Stober 2014)

mg kg⁻¹

g kg⁻¹

TU

‰ V-SMOW

‰ V-SMOW

pmC

‰ V-PDB

Fronhofen 20

62,000

− 3.15 ± 0.15

− 40.9 ± 1.5

Pfullendorf GT

39,000

− 6.64 ± 0.15

− 58.2 ± 1.5

Neu-Ulm (cr–mo)

8226

0.3

 < 0.6

− 9.71 ± 0.15

− 67.4 ± 1.5

1.2

–

Tuttlingen GB1 (momm)

1107

 < 0.1

 < 0.6 (1998)

− 10.2 ± 0.15

− 72.3 ± 1.5

1.8 ± 0.6

–

10000–20000 years

Benken

2395

–

 < 0.6 (1999)

− 12.3 ± 0.15

− 88.1 ± 1.5

2.3 ± 0.6

–

12000–14000 years^&

Siblingen

1110

 < 0.1

1.2 (1988)

− 10.0 ± 0.15

− 72.2 ± 1.5

5.7 ± 0.3

–

-*-