Larsen Index The Larsen index was developed for use in Harker diagrams in which SiO2 content alone does not show much change in basaltic suites because pyroxene and plagioclase are removed along with olivine .
Petrology: The Study of Igneous, Sedimentary, Metamorphic Rocks
Although petrology is commonly taught in the junior year, this book is a useful resource for graduate students as well.
This text, designed for the middle-level undergraduate geology major, incorporates both fundamentals and information on recent advances in our understanding of igneous, sedimentary, and metamorphic rocks. It provides an overview...
Petrology