restore: Undo the effect of hydraulic sorting
In provenance: Statistical Toolbox for Sedimentary Provenance Analysis

Description Usage Arguments Value Author(s) References See Also Examples

View source: R/srd.R

Restore the detrital composition back to a specified source rock density (SRD)

1	restore(X, dens, target = 2.71)

`X`	an object of class `compositional`
`dens`	a vector of rock and mineral densities
`target`	the target density (in g/cm3)

an object of class SRDcorrected, i.e. an object of class compositional which is a daughter of class compositional containing the restored composition, plus one additional member called restoration, containing the intermediate steps of the SRD correction algorithm.

Alberto Resentini and Pieter Vermeesch

Garzanti E, Ando, S and Vezzoli, G. "Settling equivalence of detrital minerals and grain-size dependence of sediment composition." Earth and Planetary Science Letters 273.1 (2008): 138-151.

minsorting

data(Namib,densities)
rescomp <- restore(Namib$PTHM,densities,2.71)
HMcomp <- c("zr","tm","rt","sph","ap","ep","gt",
            "st","amp","cpx","opx")
amcomp <- amalgamate(rescomp,Plag="P",HM=HMcomp,Opq="opaques")
plot(ternary(amcomp),showpath=TRUE)