age(x, ...)# S3 method for default
age(x, method = "U238-Pb206", exterr = TRUE, J = c(NA,
NA), zeta = c(NA, NA), rhoD = c(NA, NA), ...)
# S3 method for UPb
age(x, type = 1, wetherill = TRUE, exterr = TRUE, i = NA,
sigdig = NA, ...)
# S3 method for ArAr
age(x, isochron = FALSE, i2i = TRUE, exterr = TRUE,
i = NA, sigdig = NA, ...)
# S3 method for UThHe
age(x, central = FALSE, i = NA, sigdig = NA, ...)
# S3 method for fissiontracks
age(x, central = FALSE, i = NA, sigdig = NA,
exterr = TRUE, ...)
# S3 method for ReOs
age(x, isochron = TRUE, i2i = TRUE, exterr = TRUE,
i = NA, sigdig = NA, ...)
# S3 method for SmNd
age(x, isochron = TRUE, i2i = TRUE, exterr = TRUE,
i = NA, sigdig = NA, ...)
# S3 method for RbSr
age(x, isochron = TRUE, i2i = TRUE, exterr = TRUE,
i = NA, sigdig = NA, ...)
Ns and
Ni (if method='fissiontracks'),Ar40Ar39,
s[Ar40Ar39], J, s[J],U, s[U], Th,
s[Th], He and s[He],U, s[U],
Th, s[Th], He, s[He], Sm and
s[Sm]Rb, s[Rb],
Sr, s[Sr], Sr87Sr86, and s[Sr87Sr86]Re, s[Re],
Os, s[Os], Os187Os188, and s[Os187Os188]Sm, s[Sm],
Nd, s[Nd], Nd143Nd144, and s[Nd144Nd143]
OR
UPb, ArAr,
RbSr, SmNd, ReOs UThHe or
fissiontracks.
'U238-Pb206', 'U235-Pb207',
'Pb207-Pb206', 'Ar-Ar', 'Re-Os',
'Sm-Nd', 'Rb-Sr', 'U-Th-He' or
'fissiontracks'type=1), a
concordia age should be calculated from all U-Pb analyses
together (type=2), or a discordia line should be
fit through all the U-Pb analyses (type=3).TRUE) or Tera-Wasserburg
(FALSE) space. This option is only used when
type=2type=1, isochron=FALSE
or central=FALSE).isochron=FALSE) or an
isochron age should be calculated from all Ar-Ar analyses
together (isochron=TRUE).i2i to FALSE uses the default values stored in
settings('iratio',...)central=FALSE) or a
central age should be calculated from all U-Th-He analyses
together (central=TRUE).x is a scalar or a vector, returns the age using
the geochronometer given by method and its standard error. 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.conc, err[t.conc], containing the
\(^{207}\)Pb/\(^{235}\)U-age and standard error, the
\(^{206}\)Pb/\(^{238}\)U-age and standard error, the
\(^{207}\)Pb/\(^{206}\)Pb-age and standard error, and the
concordia age and standard error, respectively. x has class UPb and type=2,
returns a list with the following items: equivalence and
concordance) containing the MSWD (Mean of the Squared
Weighted Deviates, a.k.a the reduced Chi-squared statistic outside
of geochronology) of isotopic equivalence and age concordance,
respectively. equivalence and
concordance) containing the p-value of the Chi-square test
for isotopic equivalence and age concordance, respectively. x has class UPb and type=3,
returns a list with the following items: wetherill=TRUE) or the lower intercept age and
\(^{207}\)Pb/\(^{206}\)Pb intercept (for Tera-Wasserburg) x x has class ArAr, RbSr, SmNd
or ReOs and isochron=FALSE, returns a table of Ar-Ar,
Rb-Sr, Sm-Nd or Re-Os ages and standard errors. x has class ArAr, RbSr, SmNd
or ReOs and isochron=TRUE, returns a list with the
following items: x has class UThHe and central=FALSE,
returns a table of U-Th-He ages and standard errors. x has class UThHe and central=TRUE,
returns a list with the following items: uvwx has class fissiontracks and
central=FALSE, returns a table of fission track ages and
standard errors. x has class fissiontracks and
central=TRUE, returns a list with the following items: data(examples)
print(age(examples$UPb))
print(age(examples$UPb,type=1))
print(age(examples$UPb,type=2))
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