isogeochem (version 1.1.1)

temp_D48: Dual clumped isotope thermometry

Description

temp_D48() calculates carbonate growth temperature from D47 and D48 values.

Usage

temp_D48(
  D47_CDES90,
  D48_CDES90,
  D47_error,
  D48_error,
  ks,
  add = FALSE,
  col = "black",
  pch = 19
)

Value

Returns the carbonate growth temperature (°C). If both D47_error and D48_error are specified temp_D48() returns a data frame.

Arguments

D47_CDES90

Carbonate D47 values expressed on the CDES90 scale (‰).

D48_CDES90

Carbonate D48 values expressed on the CDES90 scale (‰).

D47_error

Error on the D47 value. Optional.

D48_error

Error on the D48 value. Optional.

ks

Kinetic slope. Has to be negative!

add

Add graphics to an already existing plot? Default: FALSE.

col

Graphical parameter. Optional.

pch

Graphical parameter. Optional.

Contributors

The source code of this function contains elements from the reconPlots package, available at https://github.com/andrewheiss/reconPlots

Details

The function calculates a D47 value as an intersect of two curves: the equilibrium D47 vs D48 curve from Fiebig et al. (2021) and the kinetic slope. The resulting D47 value is then converted to temperature using the temp_D47() function and the equilibrium D47_CDES90 vs temperature equation of Fiebig et al. (2021).

References

References are listed at D48() and D47().

See Also

D47() calculates the equilibrium carbonate D47 value. D48() calculates the equilibrium carbonate D48 value.

Other thermometry: temp_D47(), temp_d18O()

Examples

temp_D48(0.617, 0.139, ks = -0.6)
temp_D48(0.546, 0.277, ks = -1)