DebonBMgNoR Documentation

B vs. Mg number diagram (Debon + Le Fort 1988)

Description

Assigns data for Debon & Le Fort's B vs. Mg/(Fe + Mg) diagram into Figaro template (list 'sheet') and appropriate values into 'x.data' and 'y.data'.

Usage

DebonBMgNo(reference.rocks=TRUE)

Arguments

ideal.rocks

logical; should be the ideal rock compositions also plotted?.

Details

The B vs. Mg/(Fe + Mg) diagram was proposed by Debon and Le Fort (1983) to distinguish magnesian and ferriferrous associations.

Parameters for the diagram are calculated by the function 'DebonCalc'. All of them are based on millications (1000 gram-atoms per 100 grams).

B = Fe + Mg + Ti [maficity]

Mg/(Fe + Mg) [Mg number, Fe is total iron]

DebonBMgNo.png

Optionally, if, reference.rocks = TRUE, twelve average chemical compositions of common igneous rocks are also plotted, as follows:

label plutonic rock
go gabbro
mzgo monzogabbro
mz monzonite
s syenite
dq quartz diorite
mzdq quartz monzodiorite
mzq quartz monzonite
sq quartz syenite
to tonalite
gd granodiorite
ad adamellite
gr granite

For details, see Debon & Le Fort (1983) and (1988).

Value

sheet

list with Figaro Style Sheet data

x.data

Q value. See details.

y.data

B value. See details.

Author(s)

Vojtech Janousek, vojtech.janousek@geology.cz

References

Debon F & Le Fort P (1983) A chemical-mineralogical classification of common plutonic rocks and associations. Trans Roy Soc Edinb; Earth Sci 73: 135-149

Debon F & Le Fort P (1988) A cationic classification of common plutonic rocks and their magmatic associations: principles, method, applications. Bull. Mineral 111: 493-511

See Also

classify figaro plotDiagram DebonPQ DebonBA DebonQB DebonKNaB DebonBQF DebonCalc

Examples

    data(blatna)
    accessVar("blatna")
    selectSubset("SiO2>50")
    plotDiagram("DebonBMgNo",FALSE,reference.rocks=TRUE)
    figCol("red")