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Cerling and Quade, 1993. Stable carbon and oxygen isotopes in soil carbonates
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Anthropogenic CO2
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Carbonate solution chemistry
CaCO3 + H2O + CO2 Ca2+ + 2HCO3-
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Romanek, Grossman, and Morse, 1992 Faure and Mensing
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Biological Carbon Pump
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Diagenesis
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Diagenesis
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Paleo-CO2 proxy?
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d13C of terrestrial carbonates in equilibrium with various carbon sources
Final d13C value is a result of mixing of the four various reservoirs Dominated by Soil-respired CO2 and hence vegetation type contributing OM to soils
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Dorale et al. 1998. Science, Vol 282, Issue 5395, 1871-1874
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Extra slides
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Bradley, 1999. Paleoclimatology
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Bradley, 1999. Paleoclimatology
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From: Koch, P.L., 1998. Ann. Rev. Earth Plan. Sci., 26: 573-613
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From: Koch, P.L., 1998. Ann. Rev. Earth Plan. Sci., 26: 573-613
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From: Koch, P.L., 1998. Ann. Rev. Earth Plan. Sci., 26: 573-613
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Evolution of horses and C4 vegetation
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