Jensen {GCDkit} | R Documentation |
Assigns data for Jensen's cation plot into Figaro template (list 'sheet
')
and appropriate values into 'x.data
' and 'y.data
'.
Jensen()
Jensen's cation plot, proposed by Jensen (1976) and modified by Jensen & Pyke (1982). The triangular diagram is defined on the basis of millications as follows:
left apex: Al
upper apex: FeT+Ti
right apex: Mg
The diagram defines following rock series and names:
Komatiite series (KOMATIITE) | Komatiite |
Komatiitic basalt | |
Tholeiite series (TH) | Rhyolite |
Dacite | |
Andesite | |
High-Fe tholeiite basalt | |
High-Mg tholeiite basalt | |
Calc-alkaline series (CA) | Rhyolite |
Dacite | |
Andesite | |
Basalt | |
x.data, y.data |
Values for the three apices transformed into 2D space |
sheet |
list with Figaro Style Sheet data |
Vojtěch Erban, erban@sopky.cz
& Vojtěch Janoušek, vojtech.janousek@geology.cz
Grunsky EC (1981) An algorithm for the classification of subalkalic volcanic rocks using the Jensen cation plot. In: Wood J, White OL, Barlow RB (eds) Summary of Field Work, 1981. Ontario Geological Survey, Miscellaneous Papers 100, pp 61-65
Jensen LS (1976) A New Cation Plot for Classifying Subalkalic Volcanic Rocks. Ontario Geological Survey Miscellaneous Paper 66, pp 1-22
Jensen LS, Pyke DR (1982) Komatiites in the Ontario portion of the Abitibi belt. In: Arndt NT, Nisbet EG (eds) Komatiites. George Allen & Unwin, London, pp 147-157
data(sazava) accessVar("sazava") # Plot the diagram plotDiagram("Jensen", FALSE)