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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)