mix_d17O()
produces mixing curves between two endmembers (A and B) in
triple oxygen isotope space (d18O vs. D17O).
Arguments
- d18O_A
d18O value of component A (‰).
- d17O_A
d17O value of component A (‰).
- D17O_A
Alternatively, the D17O value of component A (‰).
- d18O_B
d18O value of component B (‰).
- d17O_B
d17O value of component B (‰).
- D17O_B
Alternatively, the D17O value of component B (‰).
- lambda
Triple oxygen isotope reference slope. Default
0.528
.- step
Output resolution, i.e., step size. Default
10
%.
Value
Returns a data frame:
d18O value of the mixture at x% mixing (‰).
D17O value of the mixture at x% mixing (‰).
relative amount of component B in the mixture (%): from 100% A and 0% B to 0% A and 100% B.
d17O value of the mixture at x% mixing (‰).
Details
If both d17O and D17O values are specified for a component, the function uses the d17O values for the calculations.
See also
d17O_c()
calculates equilibrium calcite d18O, d17O, and D17O
values for a given temperature.
Examples
# The two functions below yield the same output.
mix_d17O(d18O_A = d17O_c(10, -1)[1], d17O_A = d17O_c(10, -1)[2],
d18O_B = d17O_c(100,0)[1], d17O_B = d17O_c(100, 0)[2])
#> mix_d18O mix_D17O xB mix_d17O
#> 1 32.43637 -0.08357564 0 16.912353
#> 2 31.00451 -0.08039343 10 16.170690
#> 3 29.57265 -0.07672552 20 15.429027
#> 4 28.14080 -0.07256988 30 14.687364
#> 5 26.70894 -0.06792442 40 13.945700
#> 6 25.27708 -0.06278707 50 13.204037
#> 7 23.84522 -0.05715575 60 12.462374
#> 8 22.41337 -0.05102835 70 11.720711
#> 9 20.98151 -0.04440278 80 10.979047
#> 10 19.54965 -0.03727690 90 10.237384
#> 11 18.11779 -0.02964860 100 9.495721
mix_d17O(d18O_A = d17O_c(10, -1)[1], D17O_A = d17O_c(10, -1)[3],
d18O_B = d17O_c(100,0)[1], D17O_B = d17O_c(100, 0)[3])
#> mix_d18O mix_D17O xB mix_d17O
#> 1 32.43637 -0.08357564 0 16.912353
#> 2 31.00451 -0.08039343 10 16.170690
#> 3 29.57265 -0.07672552 20 15.429027
#> 4 28.14080 -0.07256988 30 14.687364
#> 5 26.70894 -0.06792442 40 13.945700
#> 6 25.27708 -0.06278707 50 13.204037
#> 7 23.84522 -0.05715575 60 12.462374
#> 8 22.41337 -0.05102835 70 11.720711
#> 9 20.98151 -0.04440278 80 10.979047
#> 10 19.54965 -0.03727690 90 10.237384
#> 11 18.11779 -0.02964860 100 9.495721