airfall
Volcanic debris settling
Airfall refers to material that descends through the air and settles on the ground, particularly volcanic ash and debris ejected during an eruption: The airfall from Mount St. Helens blanketed towns hundreds of miles away.
In geology, airfall deposits are distinguished from material transported by water or pyroclastic flows.
The term also appears in meteorology for precipitation or particulate matter settling from the atmosphere.
Ejected volcanic material
- pyroclasticHot eruption debris
- eruptionViolent sudden release
- plumeOrnamental feather or rising column
- pumiceLightweight volcanic abrasive
scoria · caldera · volcanologist · magma · lava · ashfall · fallout · deposit
Minute airborne solids or droplets
- pollutionEnvironmental harm from waste
- emissionsSubstances released into air
- aerosolsSuspended particles in gas
- atmosphereGaseous layer around planets
fallout · contaminants · respiratory · hazard · visibility · ashfall · dispersal · plume
Formal testimony under oath
- stratigraphyStudy of rock layers
- laminationBonding sheets together
- beddingMaterials covering a mattress
- layersStacked levels or coatings
accumulation · sorting · sedimentary · loess · drift · tuff · bentonite · isochronous
tephra
Ejected volcanic material
- pyroclasticHot eruption debris
- eruptionViolent sudden release
- plumeOrnamental feather or rising column
pumice · scoria · caldera · volcanologist · magma · lava · ashfall · fallout · deposit · blanket
particulates
Minute airborne solids or droplets
- pollutionEnvironmental harm from waste
- emissionsSubstances released into air
- aerosolsSuspended particles in gas
atmosphere · fallout · contaminants · respiratory · hazard · visibility · ashfall · dispersal · plume · downwind
deposition
Formal testimony under oath
- stratigraphyStudy of rock layers
- laminationBonding sheets together
- beddingMaterials covering a mattress
layers · accumulation · sorting · sedimentary · loess · drift · tuff · bentonite · isochronous · correlation
airfalllava flow
Moving volcanic discharge
pyroclastic flow · lahar · debris flow · mudflow · flood basalt
air, fall, airs, airy, airless, airborne, airlift, airline, airway