Undivided
Combinations of any of the above
Sedimentary, undivided
Sandstone, siltstone, shale, limestone; undivided; Psammo-pelitic rocks, paragneiss, semipelite, marble, undivided
Sedimentary, continental
Mostly nonmarine/terrigenous clastic sediments with varying amounts of conglomerate; redbeds; evaporites
Redbeds with evaporites
Redbeds, quartz arenite, conglomerate, evaporites; Quartzite, metaconglomerate
Evaporites with redbeds
Sedimentary, deltaic-and-nearshore
Mostly nonmarine/terrigenous or marginal marine clastic sediments with varying amounts of coal; conglomerate
Fluvial
Deltaic with coal
Sedimentary, carbonate
Mostly shallow marine carbonates with varying amounts of clastic sediment; evaporites
Reef
Carbonate shelf
Sedimentary, shallow-marine-siliciclastic
Mostly siliciclastic marine sediments with minor carbonates
Sedimentary, slope-and-deep-water
Shale, graywacke, bedded chert; slope carbonates, clastic- or carbonate-sediment gravity flow deposits (turbiditic rocks)
Trench-fill
Abyssal-plain
Sedimentary, marine, shallow to deep association, undivided
Limestone, dolostone, shale, evaporites, chalk, carbonate  reefs, shale, chert, iron formation, greywacke, turbidites, argillaceous limestone; Calcitic marble, dolomitic marble, calcsilicate, aluminosilicate schist and gneiss, paragneiss, anhydrite, sulp
Evaporite association
Salt, anhydrite, gypsum, dolostone
Unconsolidated
Surficial deposits of all types
Igneous, undivided
igneous complex; undivided volcanic and subvolcanic rocks
Extrusive, undivided
Most hypabyssal rocks are here
Extrusive, alkalic
Trachyte, phonolite,  carbonatite lavas, leucitic volcanics, extrusive kimberlite
Extrusive, felsic
Rhyolite flows; felsic tuff, and related volcaniclastic or pyroclastic rocks
Extrusive, intermediate
Dacite, latite, andesite, rhyolite flows and related volcaniclastic or pyroclastic rocks
Extrusive, mafic
Basalt, olivine basalt, tholeiitic basalt, alkali basalt, basanite, pillow basalt, flood basalt
Extrusive, ultramafic
Komatiite, nephelinite, picrite, basalt
Intrusive, undivided
Plutonic rocks, intrusive complex, batholith
Intrusive, granite
Granite; monzogranite, quartz monzonite; leucogranite
Intrusive, tonalite-granodiorite
Monzonite, quartz monzonite, granodiorite, diorite, tonalite
Intrusive, gabbro
Gabbro, diabase, norite, diorite, tonalite
Intrusive, peridotite
Pyroxenite, peridotite, dunite, harzburgite, wherlite, gabbro
Intrusive, anorthosite
Anorthosite, gabbroic anorthosite, anorthosite suite
Intrusive, syenite
Syenite, lamprophyre, minette, foid syenite, carbonatite, intrusive kimberlite
Intrusive, kimberlite
Kimberlite, lamproite
Intrusive, carbonatite
Carbonatite
Melange
Tectonic assemblages, melange, polymict breccia in accretionary wedge complex
Impact structure
Impact breccia, lacustrine crater fill, impact melt rocks
Metamorphic, undivided
Schist, gness, migmatite, diatexite, tectonite, mylonite, granulite