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 |
Vojtech Erban, vojtech.erban@geology.cz
& Vojtech Janousek, vojtech.janousek@geology.cz
Grunsky E C (1981) An algorithm for the classification of subalkalic volcanic rocks using the Jensen cation plot. In: Wood J, White O L, Barlow R B, Colvine A C (eds). Ontario Geological Survey, Misc Pap 100, pp 61-65
Jensen L S (1976) A new cation plot for classifying subalkalic volcanic rocks. Ont Div Mines, Misc Pap 66, 1-21
Jensen L S & Pyke D R (1982) Komatiites in the Ontario portion of the Abitibi belt. In: Arndt N T & Nisbet E G (eds) Komatiites. Allen & Unwin, London
#plot the diagram plotDiagram("Jensen", FALSE)