Key Terms and Ideas igneous processes and rocks magma magma chamber lava intrusion batholith pluton sill dike intrusive igneous rocks extrusive igneous rocks volcano pyroclastic deposits and texture volcanic ash lapilli or cinder volcanic blocks lava flow textures (know how to recognize, define, and explain the origin of the following): glassy aphanitic phaneritic pegmatitic porphyritic vesicular other textural terms phenocryst groundmass color index mafic minerals and composition and rocks felsic minerals and composition and rocks intermediate composition and rocks ultra-mafic composition and rocks know how to identify, the formula of, and the physical properties of the common igneous rock-forming minerals: quartz K-feldspar plagioclase-feldspar olivine pyroxene amphibole biotite muscovite know the names of common igneous rocks: syenite (porphyry, pegmatite) granite (porphyry, pegmatite) diorite (porphyry, pegmatite) gabbro (porphyry, pegmatite) peridotite rhyolite (porphyry) andesite (porphyry) basalt (porphyry) obsidian pumice scoria volcanic tuff volcanic breccia Bowen's reaction series fractional crystallization partial melting asthenosphere lithosphere crust mantle Questions to Think About What are igneous rocks?
(groundmass color index; mafic; )
groundmass color index
mafic