Meschede {GCDkit} | R Documentation |
Assigns data for a Meschede's (1986) triangular
diagram into Figaro template (list 'sheet
') and appropriate values
into 'x.data
' and 'y.data
'.
Meschede()
Triangular diagram with apices Zr/4, 2Nb and Y, proposed by Meschede (1986). The plot serves primarily for tectonic discrimination of tholeiitic basalts.
Abbreviations used in diagram represent following geotectonic settings:
AI-AII | Within-Plate Alkaline Basalts |
AII-C | Within-Plate Tholeiites |
B | P-type Mid-Ocean Ridge Basalts |
D | N-type Mid-Ocean Ridge Basalts |
C-D | Volcanic Arc Basalts |
sheet |
list with Figaro Style Sheet data |
x.data, y.data |
Zr/4, 2Nb and Y values recalculated into two dimensions |
Vojtěch Janoušek, vojtech.janousek@geology.cz
Meschede M (1986) A method of discriminating between different types of mid-ocean ridge basalts and continental tholeiites with the Nb-Zr-Y diagram. Chem Geol 56: 207-218 doi: 10.1016/0009-2541(86)90004-5
data(sazava) accessVar("sazava") # Plot the diagram selectSubset("SiO2<65") plotDiagram("Meschede",FALSE)