Keywords: Streckeisen for volcanic igneous rocks fr.svg en Simplified Streckeisen classification of volcanic igneous rocks Used by IUGS fr Classification Streckeisen simplifiée des roches magmatiques volcaniques Normalisation de l'IUGS Own work Inkscape <br />Sources An introduction to igneous and metamorphic petrology J D Winter Prentice Hall Éléments de géologie C Pomerol Y Lagabrielle M Renard Dunod 16 06 29 April 2007 UTC jd See also Image Streckeisen for intrusive igneous rocks fr svg Image Streckeisen for volcanic quartz igneous rocks fr svg Image Streckeisen for volcanic foid igneous rocks fr svg Image Streckeisen for intrusive quartz igneous rocks fr svg Image Streckeisen for intrusive foid igneous rocks fr svg Image Gabbroic igneous rocks fr svg Image Ultramafic igneous rocks fr svg QAPF diagrams in French QAPF diagrams of volcanic rocks |