Villaseca {GCDkit}R Documentation

B-A plot (modified by Villaseca et al. 1998)

Description

The B-A diagram as proposed by Debon and Le Fort (1983) with classification fields for various types of peraluminous rocks designed by Villaseca et al. (1998).

Usage

Villaseca()

Details

Plots modified B-A diagram (designed originally by Debon and Le Fort 1983) with fields for various peraluminous rock types after Villaseca et al. (1998). Assigns data for the B-A diagram into Figaro template (list 'sheet') and appropriate values into 'x.data' and 'y.data'.

Villaseca.png

The following fields are defined:

l-P low peraluminous
m-P moderately peraluminous
h-P highly peraluminous
f-P felsic peraluminous
metaluminous

Rocks with composition falling beyond defined boundaries are labeled 'undefined' by the 'classify' function.

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

A = Al - (K + Na + 2 Ca)

B = Fe + Mg + Ti

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

Value

sheet

list with Figaro Style Sheet data

x.data

B value. See details.

y.data

A 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

Villaseca C, Barbero L, Herreros V (1998) A re-examination of the typology of peraluminous granite types in intracontinental orogenic belts. Trans Roy Soc Edinb, Earth Sci 89: 113-119

See Also

classify figaro plotDiagram DebonCalc Debon

Examples

#plot the diagram
plotDiagram("Villaseca",FALSE)

[Package GCDkit version 4.0 Index]