age  R Documentation 
Calculates UPb, PbPb, ThPb, ArAr, KCa, ReOs, SmNd, RbSr, LuHf, UThHe, ThU and fission track ages and propagates their analytical uncertainties. Includes options for single grain, isochron and concordia_ages.
age(x, ...)
## Default S3 method:
age(
x,
method = "U238Pb206",
oerr = 1,
sigdig = NA,
exterr = FALSE,
J = c(NA, NA),
zeta = c(NA, NA),
rhoD = c(NA, NA),
d = diseq(),
...
)
## S3 method for class 'UPb'
age(
x,
type = 1,
exterr = FALSE,
i = NULL,
oerr = 1,
sigdig = NA,
common.Pb = 0,
discordance = discfilter(),
...
)
## S3 method for class 'PbPb'
age(
x,
isochron = TRUE,
common.Pb = 2,
exterr = FALSE,
i = NULL,
oerr = 1,
sigdig = NA,
projerr = FALSE,
...
)
## S3 method for class 'ArAr'
age(
x,
isochron = FALSE,
i2i = TRUE,
exterr = FALSE,
i = NULL,
oerr = 1,
sigdig = NA,
projerr = FALSE,
...
)
## S3 method for class 'KCa'
age(
x,
isochron = FALSE,
i2i = TRUE,
exterr = FALSE,
i = NULL,
oerr = 1,
sigdig = NA,
projerr = FALSE,
...
)
## S3 method for class 'UThHe'
age(x, isochron = FALSE, central = FALSE, i = NULL, oerr = 1, sigdig = NA, ...)
## S3 method for class 'fissiontracks'
age(x, central = FALSE, i = NULL, oerr = 1, sigdig = NA, exterr = FALSE, ...)
## S3 method for class 'ThU'
age(
x,
isochron = FALSE,
Th0i = 0,
exterr = FALSE,
i = NULL,
oerr = 1,
sigdig = NA,
...
)
## S3 method for class 'ThPb'
age(
x,
isochron = TRUE,
i2i = TRUE,
exterr = FALSE,
i = NULL,
oerr = 1,
sigdig = NA,
projerr = FALSE,
...
)
## S3 method for class 'ReOs'
age(
x,
isochron = TRUE,
i2i = TRUE,
exterr = FALSE,
i = NULL,
oerr = 1,
sigdig = NA,
projerr = FALSE,
...
)
## S3 method for class 'SmNd'
age(
x,
isochron = TRUE,
i2i = TRUE,
exterr = FALSE,
i = NULL,
oerr = 1,
sigdig = NA,
projerr = FALSE,
...
)
## S3 method for class 'RbSr'
age(
x,
isochron = TRUE,
i2i = TRUE,
exterr = FALSE,
i = NULL,
oerr = 1,
sigdig = NA,
projerr = FALSE,
...
)
## S3 method for class 'LuHf'
age(
x,
isochron = TRUE,
i2i = TRUE,
exterr = FALSE,
i = NULL,
oerr = 1,
sigdig = NA,
projerr = FALSE,
...
)
## S3 method for class 'PD'
age(
x,
nuclide,
isochron = TRUE,
i2i = TRUE,
exterr = FALSE,
i = NULL,
oerr = 1,
sigdig = NA,
projerr = FALSE,
...
)
x 
can be:
OR

... 
additional arguments 
method 
one of either 
oerr 
indicates whether the analytical uncertainties of the output are reported as:
(only used when 
sigdig 
number of significant digits for the uncertainty
estimate (only used if 
exterr 
propagate the external (decay constant and calibration factor) uncertainties? 
J 
twoelement vector with the Jfactor and its standard error. 
zeta 
twoelement vector with the zetafactor and its standard error. 
rhoD 
twoelement vector with the track density of the dosimeter glass and its standard error. 
d 
an object of class 
type 
scalar flag indicating whether

i 
index of a particular aliquot 
common.Pb 
common lead correction:

discordance 
discordance calculator. This is an object of
class

isochron 
logical flag indicating whether each analysis
should be considered separately ( 
projerr 
logical. If 
i2i 
‘isochron to intercept’: calculates the initial (aka
‘inherited’, ‘excess’, or ‘common’)

central 
logical flag indicating whether each analysis should
be considered separately ( 
Th0i 
initial

nuclide 
a text string corresponding to a valid entry for

if x
is a scalar or a vector, returns the age using
the geochronometer given by method
and its standard error.
if x
has class UPb
and type=1
, returns a
table with the following columns: t.75
, err[t.75]
,
t.68
, err[t.68]
, t.76
, err[t.76]
,
(t.82
, err[t.82]
,) t.conc
, err[t.conc]
,
(disc
) or err[p.conc]
,) containing the
^{207}
Pb/^{235}
Uage and standard error, the
^{206}
Pb/^{238}
Uage and standard error, the
^{207}
Pb/^{206}
Pbage and standard error, (the
^{208}
Pb/^{232}
Thage and standard error,) the single
grain concordia_age and standard error, (and the % discordance or
pvalue for concordance,) respectively.
if x
has class UPb
and type=2, 3, 4
or
5
, returns the output of the concordia
function.
if x
has class PbPb
, ThPb
, ArAr
,
KCa
, RbSr
, SmNd
, ReOs
, LuHf
,
ThU
or UThHe
and isochron=FALSE
, returns a
table of PbPb, ThPb, ArAr, KCa, RbSr, SmNd, ReOs, LuHf,
ThU or UThHe ages and their standard errors.
if x
has class ThU
and isochron=FALSE
,
returns a 5column table with the ThU ages, their standard errors,
the initial ^{234}
U/^{238}
Uratios, their standard errors,
and the correlation coefficient between the ages and the initial
ratios.
if x
has class PbPb
, ThPb
, ArAr
,
KCa
, RbSr
, SmNd
, ReOs
, LuHf
,
UThHe
or ThU
and isochron=TRUE
, returns the
output of the isochron
function.
if x
has class fissiontracks
and
central=FALSE
, returns a table of fission track ages and
standard errors.
if x
has class fissiontracks
or UThHe
and central=TRUE
, returns the output of the
central
function.
concordia
, isochron
,
central
attach(examples)
tUPb < age(UPb,type=1)
tconc < age(UPb,type=2)
tdisc < age(UPb,type=3)
tArAr < age(ArAr)
tiso < age(ArAr,isochron=TRUE,i2i=TRUE)
tcentral < age(FT1,central=TRUE)
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