Intermediate composition

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

In igneous petrology an intermediate composition refers to the chemical composition of a rock that has 52-63 wt% SiO2 being an intermediate between felsic and mafic compositions. Typical intermediate rocks include andesite, dacite and trachyandesite among volcanic rocks and diorite and granodiorite among plutonic rocks.

References


Retrieved from "https://en.wikipedia.org/w/index.php?title=Intermediate_composition&oldid=838483006"
This content was retrieved from Wikipedia : http://en.wikipedia.org/wiki/Intermediate_composition
This page is based on the copyrighted Wikipedia article "Intermediate composition"; it is used under the Creative Commons Attribution-ShareAlike 3.0 Unported License (CC-BY-SA). You may redistribute it, verbatim or modified, providing that you comply with the terms of the CC-BY-SA