scoria
scoria Loose, rubbly, basaltic ejecta that accumulate around Strombolian eruptive volcanic vents, eventually building up as a scoria cone, whose height may range from a few tens of metres to up to 300 m, and whose slope is determined by the angle of repose of the loose material. The scoria clasts range widely in size, and have a light, frothy texture, being full of vesicles. They are mainly drab grey in colour, although when fresh they may be iridescent, but often the scoria oxidizes by reaction with steam escaping from the vent, when it becomes a deep reddish brown.
scoria
scoria Loose, rubbly, basaltic ejecta that accumulate around eruptive volcanic vents (or similar type to Stromboli), eventually building up as a scoria cone, the height of which may range from a few tens of metres to up to 300 m, with a slope determined by the angle of repose of the loose material.
More From encyclopedia.com
Concurrent Range Zone , concurrent range zone Range , range / rānj/ • n. 1. the area of variation between upper and lower limits on a particular scale: the cost is thought to be in the range of $1-5 mill… Range Zone , range zone Unit of strata defined by the presence and time range of a particular fossil taxon. A range zone comprises the entire vertical and horizon… Home Range , In the course of its daily activities, an animal travels through familiar places to obtain food, seek shelter, or find mates. The actual physical are… Lapilli , lapilli Pyroclastic fragments or tephra ranging in size from 2 to 64 mm. Lapilli may be composed of primary magmatic material (e.g. pumice), accessor… Oppel zone , Oppel zone A concurrent range zone as originally conceived by Albert Oppel. The lower boundary of the zone is usually determined by the first appeara…
About this article
scoria
All Sources -
You Might Also Like
NEARBY TERMS
scoria