ageEps {GCDkit} | R Documentation |
Plots Nd or Sr growth curves in the binary diagram age-ε(Nd) or age-Sr isotopic ratio.
ageEps() ageEps2() ageSr()
None.
The Nd growth curves in individual samples can be plotted using either a single- or two-stage (Liew & Hofmann 1988) models.
In case of Nd are shown growth curves for the two main mantle reservoirs, CHUR and Depleted Mantle (DM) (the latter in two modifications, after Goldstein et al. (1988) and Liew & Hofmann (1988).
For Sr only uniform reservoir (UR) development is calculated using parameters of Faure (1986 and references therein).
The small ticks, or rugs, on x axis correspond to Nd model ages, on y axis to initial ε(Nd) values.
This function is, so far with the exception of rugs, Figaro compatible.
None.
SrNd.r
Vojtech Janousek, vojtech.janousek@geology.cz
Faure G (1986) Principles of Isotope Geology. J.Wiley & Sons, Chichester, 589 pp
Goldstein S L, O'Nions R K & Hamilton P J (1984) A Sm-Nd isotopic study of atmospheric dusts and particulates from major river systems. Earth Planet Sci Lett 70: 221-236
Liew T C & Hofmann A W (1988) Precambrian crustal components, plutonic associations, plate environment of the Hercynian Fold Belt of Central Europe: indications from a Nd and Sr isotopic study. Contrib Mineral Petrol 98: 129-138