draw.contamination: Draw contamination impacts

In Maarten14C/IntCal: Radiocarbon Calibration Curves

Draw contamination impacts

Description

Show how contamination with different fractions of modern carbon affect observed C-14 ages.

Usage

draw.contamination(
  from = 0,
  to = 50000,
  ka = TRUE,
  age.res = 500,
  xlim = c(),
  ylim = c(),
  colours = rainbow(age.res),
  max.contam = 0.1,
  contam.F14C = 1,
  contam.legend = max.contam * c(1/100, (1:5)/50, (1:4)/5, 1),
  legend.pos = 0.07,
  legend.cex = 0.6,
  grid = TRUE,
  xaxs = "i",
  yaxs = "i"
)

Arguments

from	Minimum 14C age for the plot. Defaults to 0
to	Maximum 14C age for the plot. Defaults to 50e3.
ka	Use C14 kBP. Defaults to TRUE.
age.res	Resolution of age scale. Defaults to 500, which results in smooth curves. Higher numbers will take longer to draw.
xlim	Limits of the horizontal axis.
ylim	Limits of the vertical axis.
colours	Colours of the percentages. Defaults to rainbow colours.
max.contam	Maximum contamination level as a fraction of the sample. Defaults to 0.1 (10%).
contam.F14C	14C activity of the sample. Defaults to 'modern' 14C, F14C=1.
contam.legend	Percentages for which numbers will be plotted.
legend.pos	horizontal position beyond which the percentage values will be plotted
legend.cex	font size of the legend
grid	Whether to plot a grid. Defaults to TRUE
xaxs	Whether or not to extend the limits of the horizontal axis. Defaults to xaxs="i" which does not extend.
yaxs	Whether or not to extend the limits of the vertical axis. Defaults to yaxs="i" which does not extend.

Value

A plot of real and observed (contamination-impacted) C14 ages.

Examples

  draw.contamination()
  draw.contamination(40e3, 50e3, ka=FALSE)

Maarten14C/IntCal documentation built on Oct. 11, 2023, 1:25 a.m.