Simple categories matching volcanic:

• eruption,
• phenomenon,
• substance,
• material,
• rock,
• depression,
• substrate,
• island,
• structure,
• feature,
• deposit,
• product,
• emanation,
• marker,
• formation,
• lava,
• hazard,
• event,
• unit,
• centre,
• activity,
• sand,
• stratum,
• episode,
• precursor,
• condition,
• system,
• form,
• process,
• domain,
• flow,
• sediment,
• stone,
• mineral,
• cone,
• action,
• component,

Members with property volcanic:

• andesite,
• basalt,
• east_crater,
• vesicular_texture,
• rhyolite_dome,
• conglomerate,
• tuff,
• rhyolite,
• pumice,
• repeated_collapse,
• siltstone,
• gas_emission,
• poisonous_gas,
• glass_flow,
• magma_generation,
• dacite,
• mud_pool,
• diamond_head,
• granite,
• lava_rock,
• olivine_basalt,
• vesiculation,
• mt,
• glowing_vent,
• bubble_growth,
• carolina_slate,
• thermal_anomaly,
• fine_ash,
• ash,
• obsidian,
• last_mount,
• volcanic_plug,
• natural_bridge,
• gabbro,
• extrusion,
• temperature,
• limestone,
• fragmented_rock,
• augite,
• containing_quartz,
• dardanelles_cone,
• eruption,
• ash_tuff,
• lava_flow,
• phosphate,
• biotite,
• lava_canal,
• lava_pathway,
• dust,
• debris_flow,
• hard_basalt,
• water_disruption,
• explosive_blast,
• lava_dome,
• heulandite,
• rock,
• gravel,
• wildfire,
• geothermal_vent,
• mud_pot,
• volcanic_gas,
• lava_tuff,
• dolomite,
• sandstone,
• melting,
• pillow,
• soil,
• magma_chamber,
• diorite,
• resurgent_dome,
• pillow_mound,
• certain_gas,
• feldspar,
• dike_intrusion,
• fertile_soil,
• volcanic_material,
• fire_fountain,
• flint,
• hazardous_gas,
• alkali_basalt,
• obsidian_dome,
• lava_bomb,
• heat_flow,
• pitchstone,
• explosive_eruption,
• magma_composition,
• tuff_fig,
• pliocene_basalt,
• hornblende,
• low_shield,
• lava_tube,
• flood,
• mt_wellington,
• plagioclase,
• hot_spot,
• iron,
• gneiss,
• andesite_tuff,
• tree-trunk_mold,
• flow_rock,
• copper,
• debris,
• zeolite,
• neighboring_mt,
• breccia,
• bentonite,
• magma,
• vulnerable_area,
• tsunami,
• fissure_vent,
• basaltic_andesite,
• olivine,
• overlying_rock,
• flow_lobe,
• quartz_porphyry,
• lava_sand,
• magma_intrusion,
• basalt_fig,
• bass_rock,
• swelling,
• glass,
• ash_fall,
• lahar_figure,
• felspar,
• pillow_structure,
• liquid_magma,
• tidal_wave,
• basalt_lava,
• eruptive_fissure,
• pillow_basalt,
• magma_body,
• native-american_writings,
• mica,
• plagioclase_feldspar,
• sand,
• quartz,
• pyroxene,
• dome,
• ash_debris,
• corona,
• ash_bed,
• magnetite,
• elongated_hill,
• tufa,
• plume_emission,
• porphyry,
• fissure_eruption,
• explosion_pit,
• air_blast,
• shale,
• rift_zone,
• ridge,
• volcanic_island,
• wellington_rhyolite,
• alluvium,
• tremor,
• pressure,
• cook_island,
• pumice_deposit,
• tuff_figure,
• fissure,
• drinking-water_contamination,
• hornfels,
• crystalline_shale,
• kimberlite,
• cross_bedding,
• cone,
• quartzite,
• sulphate,
• fluorite,
• gas,
• lower_conglomerate,
• explosion,
• magma_movement,
• magma_flow,
• zircon,
• lava,
• clay,
• honeycomb,
• lahar,
• volcano,
• cinder_cone,
• upper,
• tree_truck,
• crushed_stone,
• solidification,
• etna,
• possible_deflation,
• graded_bedding,
• volcanic_ash,
• multiphase_flow,
• flow,
• dike,
• vent,
• lip,
• flank_failure,
• amphibole,
• charcoal,
• lunar_dome,
• ash_fallout,
• caldera,
• thermal_spring,
• fragment,
• lava_bubble,
• apatite,
• stream,
• pressure_ridge,
• alkaline_basalt,
• explosion_crater,
• volcanic_breccia,
• ash_layer,
• hole,
• obsidian_flow,