provenance (version 1.3)

minsorting: Assess settling equivalence of detrital components

Description

Models grain size distribution of minerals and rock fragments of different densities

Usage

minsorting(X, dens, sname = NULL, phi = 2, sigmaphi = 1,
  medium = "freshwater", from = -2.25, to = 5.5, by = 0.25)

Arguments

X

an object of class compositional

dens

a vector of mineral and rock densities

sname

sample name if unspecified, the first sample of the dataset will be used

phi

the mean grain size of the sample in Krumbein's phi units

sigmaphi

the standard deviation of the grain size distirbution, in phi units

medium

the transport medium, one of either "air", "freshwater" or "seawater"

from

the minimum grain size to be evaluated, in phi units

to

the maximum grain size to be evaluated, in phi units

by

the grain size interval of the output table, in phi units

Value

• an object of class minsorting, i.e. a list with two tables:

  mfract: the grain size distribution of each mineral (sum of the columns = 1)

  mcomp: the composition of each mineral (sum of the rows = 1)

References

Resentini, A, Malusa, M G and Garzanti, E. "MinSORTING: An Excel worksheet for modelling mineral grain-size distribution in sediments, with application to detrital geochronology and provenance studies." Computers & Geosciences 59 (2013): 90-97.

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.

See Also

restore

Examples

data(endmembers,densities)
distribution <- minsorting(endmembers,densities,sname='ophiolite',phi=2,
                           sigmaphi=1,medium="seawater",by=0.05)
plot(distribution,cumulative=FALSE)