petrafm

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.

datasets

A minimum set of functions to perform compositional data analysis
using the log-ratio approach introduced by John Aitchison (1982). Main functions
have been implemented in c++ for better performance.

Marc ComasCuf

coda.base

A Basic Set of Functions for Compositional Data Analysis

Marc Comas-Cufí

petrafm function

An object of class <code>data.frame</code> with 100 rows and 4 columns.

petrafm: Calc-alkaline and tholeiitic volcanic rocks

Description

Usage

Arguments

Format