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Progress in Earth and Planetary Science

Table 1 Model input parameters

From: Authigenic carbonate precipitation at the end-Guadalupian (Middle Permian) in China: Implications for the carbon cycle in ancient anoxic oceans

 

Value

Units

References

ΣNaa

500

mmol/L

 

ΣCl

500

mmol/L

 

ΣS

20

mmol/L

Algeo et al. (2015)

ΣCa

15

mmol/L

Stanley and Hardie (1998)

ΣCO2 b

2

mmol/kg

Arvidson et al. (2014)

ΣNc

15

μmol/L

Lam et al. (2009)

pH

7.8

 

Ridgwell (2005)

Temperature

15

°C

 

δ13CDIC

+2

‰

 

δ13Corg

−26

‰

 
  1. aΣNa = Na+ + NaCO3− + NaCl (aq) + NaHCO3 (aq) + NaOH (aq)
  2. The total elemental concentrations of the other elements are calculated in a similar way to ΣNa (see the “Methods” section and Table 3)
  3. bTotal dissolved inorganic carbon (DIC)
  4. cThe value at the estimated water depth of the sedimentary environment (>150 m deep)
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