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scoria

A Dictionary of Earth Sciences | 1999 | | Copyright

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.

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AILSA ALLABY and MICHAEL ALLABY. "scoria." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "scoria." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O13-scoria.html

AILSA ALLABY and MICHAEL ALLABY. "scoria." A Dictionary of Earth Sciences. 1999. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-scoria.html

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scoria

A Dictionary of Ecology | 2004 | | Copyright

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.

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MICHAEL ALLABY. "scoria." A Dictionary of Ecology. 2004. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "scoria." A Dictionary of Ecology. 2004. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O14-scoria.html

MICHAEL ALLABY. "scoria." A Dictionary of Ecology. 2004. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-scoria.html

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scoria

The Concise Oxford Dictionary of English Etymology | 1996 | | Copyright

scoria slag, clinkers. XVII. — L. scōria dross — Gr. skōríā, f. skǒr dung.

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T. F. HOAD. "scoria." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

T. F. HOAD. "scoria." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O27-scoria.html

T. F. HOAD. "scoria." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-scoria.html

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scoria

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

scoria see pumice .

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"scoria." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1E1-X-scoria.html

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