Definition of Pumiceous. Meaning of Pumiceous. Synonyms of Pumiceous

- pyroclastic deposit is an ignimbrite, which is the deposit of a ground-hugging pumiceous pyroclastic density current (a rapidly flowing hot suspension of pyroclasts...
- It is a grey or cream-coloured fragmental rock, largely composed of pumiceous dust, and may be regarded as a trachytic tuff. It much resembles the Italian...
- have a wide distribution in location and age. Rhyolite tuffs contain pumiceous, gl****y fragments and small scoriae with quartz, alkali feldspar, biotite...
- pyroclastic fall deposits and in ignimbrites, which are the deposits of pumiceous pyroclastic density currents. The name fiamme comes from the Italian word...
- unit is dated to 0.796 million years. An explosive eruption deposited pumiceous fallout near Harlequin Lake, which is immediately overlain by the Mount...
- north-facing crater and consisted of glowing pumice bombs and very hot pumiceous ash. Some of these hot flows covered ice or water, which flashed to steam...
- BCE as part of the Smith Cr**** eruptive period. The tephra consists of pumiceous dacite. "St. Helens". Global Volcanism Program. Smithsonian Institution...
- pulverulence, pulverulent pumex pumic- pumice stone pumicate, pumice, pumiceous, pumiciform, pumicite pupa pup- doll pupae, pupal, puparium, pupation...
- due to ductile elongation in the volcanic conduit or, in the case of pumiceous lavas, during flow. The other form of vesicles are subspherical to spherical...
- consists of breccia, tuff, and flows of rhyolite and dacite overlain by pumiceous strata. The Plio-Pleistocene Mba Grouop is found on the southwestern portion...