Rocks, Igneous


 * agglomerate
 * alluvium
 * amber
 * amygdule
 * andesite
 * anorthosite
 * anthracite
 * anticline
 * aplite
 * aquifer
 * basalt
 * batholith
 * bedrock
 * bitumen
 * boulder train
 * breccia
 * carat
 * carbonaceous
 * carbonatite
 * chemical weathering
 * chert
 * clinkstone
 * conglomerate
 * country rock
 * dacite
 * diabase
 * diorite
 * dolerite
 * drift
 * drumlin
 * druse
 * dunite
 * erratics
 * esker
 * extrusive
 * fault
 * felsite
 * flint
 * fold
 * fool's gold
 * gabbro
 * gastrolith
 * geode
 * glacial pavement
 * granite
 * granite pegmatite
 * granodiorite
 * humus
 * igneous rock
 * intrusive
 * karst
 * kimberlite
 * lapidary
 * lapilli
 * lava
 * limestone
 * loess
 * marble
 * matrix
 * metamorphic rock
 * monzonite
 * nepheline syenite
 * obsidian
 * oil shale
 * oolites
 * ore
 * outcrop
 * overburden
 * pegmatite
 * Pele's hair
 * peridotite
 * petrify
 * petroglyph
 * petrology
 * petrous
 * phonolite
 * pitchstone
 * placer deposit
 * porphyry
 * pumice
 * pyroclastic
 * pyroxenite
 * rhyolite
 * riprap
 * sandstone
 * scoria
 * sedimentary rock
 * silica
 * strata
 * stratification
 * striation
 * syenite
 * till
 * trachyte
 * trap
 * traprock
 * tuff
 * vein
 * ventifact
 * volcanic ash