Igneous Rocks

Rock cycle 

Types of Igneous rocks - intrusive, underground, cool slowly, large crystals; extrusive, volcanic, cool quickly, small/no crystals ; felsic - >65% SiO₂, much Na, K; intermediate; mafic - < 52% SiO₂, much Fe, Mg

mineralogy - Bowen's reaction series; discontinuous series, similar chemical composition (Fe, Mg), increasingly complex crystal structure, replacement of pre-existing crystals; continuous series, different chemical composition (Ca-Na), same 3-D crystal structure, continuous growth of crystals; granite/ rhyolite, diorite/andesite, gabbro/basalt, peridotite

Geometry of intrusive bodies: tabular, dikes, sills; irregular, batholiths (>100km²), stocks (<100km²)
 

Compare and contrast intrusive and extrusive igneous rocks in terms of location of formation, rate of cooling, crystal size.

Compare and contrast the discontinuous series and continuous series of Bowen's reaction series in terms of: chemical composition of minerals involved, variations of crystal structures, replacement vs. continuous growth.  How does this sequence relate to cooling of magma.  Which igneous minerals form as magma cools, but are not part of either the continuous or discontinuous series?

Compare and contrast felsic and mafic rocks in terms of chemical composition, mineralogy, magma viscosity, type of volcanoes produced, textures of volcanic rocks, names of intrusive and extrusive rocks, ...

Compare and contrast the different types of intrusive bodies.
 

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