Villaseca {GCDkit} | R Documentation |
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).
Villaseca()
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
'.
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).
sheet |
list with Figaro Style Sheet data |
x.data |
B value. See details. |
y.data |
A value. See details. |
Vojtech Janousek, vojtech.janousek@geology.cz
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
classify figaro plotDiagram DebonCalc Debon
#plot the diagram plotDiagram("Villaseca",FALSE)