Pearce et al. 1977 {GCDkit}R Documentation

Pearce et al. (1977) MgO-FeOt-Al2O3

Description

Assigns data for the MgO-FeOt-Al2O3 triangle proposed by Pearce et al.(1977) into Figaro template (list 'sheet') and appropriate values into 'x.data' and 'y.data'.

Usage

    PearceEtAl()

Details

Triangular diagram with apices MgO, FeOt and Al2O3, proposed by Pearce et al.(1977). The boundaries were defined solely for subalkaline volcanic rocks with SiO2 between 51-56 wt %. Following geotectonic positions may be identified using the diagram:

Spreading Center
Orogenic
Ocean Ridge
Ocean Island
Continental

Value

sheet

list with Figaro Style Sheet data

x.data, y.data

MgO, FeOt and Al2O3 in wt. % recalculated to two dimensions

Author(s)

Vojtech Janousek, vojtech.janousek@geology.cz

References

Pearce T H, Gorman B E & Birkett T C (1977) The relationship between major element geochemistry and tectonic environment of basic and intermediate volcanic rocks. Earth Planet Sci Lett 36: 121-132. doi: 10.1016/0012-821X(77)90193-5

See Also

figaro plotDiagram

Examples

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

[Package GCDkit version 3.00 Index]