Rocks, General

• agglomerate
• alluvium
• amber
• amygdule
• anthracite
• anticline
• aquifer
• basalt
• batholith
• bedrock
• bitumen
• boulder train
• breccia
• carat
• carbonaceous
• chemical weathering
• chert
• conglomerate
• country rock
• drift
• drumlin
• druse
• erratics
• esker
• extrusive
• fault
• flint
• fold
• fool's gold
• gastrolith
• geode
• glacial pavement
• granite
• humus
• igneous rock
• intrusive
• karst
• lapidary
• lapilli
• limestone
• loess
• marble
• matrix
• metamorphic rock
• obsidian
• oil shale
• oolites
• ore
• outcrop
• overburden
• Pele's hair
• petrify
• petroglyph
• petrology
• petrous
• placer deposit
• pumice
• pyroclastic
• riprap
• sandstone
• sedimentary rock
• silica
• strata
• stratification
• striation
• till
• tuff
• vein
• ventifact