scoria


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scoria:

see pumicepumice
, volcanic glass formed by the solidification of lava that is permeated with gas bubbles. Usually found at the surface of a lava flow, it is colorless or light gray and has the general appearance of a rock froth.
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scoria

[′skȯr·ē·ə]
(geology)
Vesicular, cindery, dark lava formed by the escape and expansion of gases in basaltic or andesitic magma; generally denser and darker than pumice.
(materials)
Refuse after melting metals or reducing ore.

scoria

1. A dark, cellular volcanic rock.
2. Blast-furnace slag or scum.

scoria

1. a rough cindery crust on top of solidified lava flows containing numerous vesicles
2. refuse obtained from smelted ore; slag
References in periodicals archive ?
The composition of the scoria droplets was related to the local soil, not to soil from other continents, as one would expect from an intercontinental impact.
The potential source vent of the lava flow flowing into the maar crater is located nearby--it is the Podhorni vrch scoria cone (Fig.
The filtering capabilities of a scoria based porous concrete coupled with the strengthening nature of corrosive resistant fibers will help open doors for different uses of porous concrete.
Quartz crystals, chronite, scoria were among the other displayed minerals.
Quatrz crystals , chromite, scoria were among the other displayed minerals.
Dunn and his coauthors carried out Calspan laboratory experiments involving the measurement of the effects two kinds of volcanic ash (black scoria and Mt.
Although many of these cavities are either small, partially filled with scoria or nearly solid, large open pockets, around 25 cm or more, are occasionally located.
These features can be used to elegantly explain growth of scoria and spatter cones and how magma finally escapes laterally to form lava flows.
The team examined the way the hats, each weighing several tons and made of red scoria were moved by Polynesians between 500 and 750 years ago.
In this way the Shino we do not know returns to us and becomes so familiar, it is us, it is the others, it is ready to let itself be mixed by younger hands, gazed at by young eyes saturated by images searching for forms free of scoria and worldly turbulence.
Before joining Merrill he was senior vice president at Barclays Bank and prior to Barclays he originated and structured real estate loans for the Bank of Nova Scoria.