d17O_c: Triple oxygen isotope values

Description Usage Arguments Details Value References See Also Examples

View source: R/d17O.R

Description

d17O_c() calculates the equilibrium d18O, d17O, and D17O values of a calcite grown at a given temperature.

Usage

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d17O_c(temp, d18O_H2O_VSMOW, eq18 = "Daeron19", lambda = 0.528)

Arguments

temp

Calcite growth temperature (°C).

d18O_H2O_VSMOW

Water d18O value expressed on the VSMOW scale (‰).

eq18

Equation used to calculate the 18O/16O fractionation factor between calcite and water. Options are like those for calcite in a18_c_H2O() with "Daeron19" being here the default.

lambda

Triple oxygen isotope reference slope. Default 0.528.

Details

θ_{A/B} = \frac{α^{17}_{A/B}}{α^{18}_{A/B}}

δ'^{17}O_{H2O,VSMOW} = β \times δ'^{18}O_{H2O,VSMOW} + γ \textrm{ , where } β=0.528 \textrm{ and } γ = 0

Δ^{17}O_{CaCO3,VSMOW} = δ'^{17}O_{CaCO3,VSMOW} - λ \times δ'^{18}O_{CaCO3,VSMOW}

Value

Returns a data frame:

  1. d18O value of the carbonate expressed on the VSMOW scale (‰).

  2. d18O value of the carbonate expressed on the VSMOW scale (‰).

  3. D17O value of the carbonate expressed on the VSMOW scale (‰).

References

Guo, W., & Zhou, C. (2019). Triple oxygen isotope fractionation in the DIC-H2O-CO2 system: A numerical framework and its implications. Geochimica et Cosmochimica Acta, 246, 541-564. doi: 10.1016/j.gca.2018.11.018

See Also

Other equilibrium_carbonate: D47(), D48(), d18O_c()

Examples

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d17O_c(temp = 10, d18O_H2O_VSMOW = -1) # Returns the data frame (length = 3)
prime(d17O_c(temp = 10, d18O_H2O_VSMOW = -1)[, 2]) # Returns the d'17O value
d17O_c(temp = 10, d18O_H2O_VSMOW = -1)[, 3] # Returns the D17O value

isogeochem documentation built on Nov. 7, 2021, 5:08 p.m.