petrafm {coda.base}

Calc-alkaline and tholeiitic volcanic rocks

Description

This petrafm data set is formed by 100 classified volcanic rock samples from Ontario (Canada). The three parts are:

[A: {Na}_2 O + K_2 O; F: Fe O + 0.8998 Fe_2 O_3 ; M: Mg O]

Rocks from the calc-alkaline magma series (25) can be well distinguished from samples from the tholeiitic magma series (75) on an AFM diagram.

Usage

petrafm

Format

An object of class data.frame with 100 rows and 4 columns.