ash deposits
Remnants of burning
Ash deposits are accumulations of powdery residue left by combustion or volcanic activity.
In industrial contexts, ash deposits form inside furnaces, boilers, and chimneys, potentially reducing efficiency or causing damage: The technician cleaned ash deposits from the flue.
Volcanic ash deposits settle on landscapes after eruptions, sometimes preserving archaeological sites or enriching soil over time.
- tephraEjected volcanic material
- slagIndustrial metalworking byproduct
- pyroclasticsFragmented volcanic explosion material
- ash cloudAirborne eruption debris
- pumiceLightweight volcanic abrasive
fly ash · bottom ash · sedimentary layers · Pompeii · tuff · volcanic glass · caldera · clinker · cinder · fire pit · burned out · soot · cigarette butt · air quality · ashfall · stratigraphy · volcanic ash · eruption
ash depositsfuel
Energy source material
kindling · conflagration · firewood · coal seams · ignition
ash depositsliving tissue
Metabolically active cellular material
organic growth · fertile soil · humus · living organisms · seedbed