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Scoria is one of the major igneous rock types. ... Scoria, like pumice, is a lightweight extrusive rock, but scoria has large, distinct gas bubbles and a darker color. (more below)
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geology.about.com/od/rocks/ig/igrockindex/rocpicscoria....
geology.about.com/od/rocks/ig/igrockindex/rocpicscoria.htm
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The Rock - Scoria ... When the molten rock is rising in the volcanic pipe, gases begin to form and collect and those gases form large bubbles in the lava. The resulting solidified rock is scoria. Although the open spaces in scoria can be large the rock is generally heavier than water unlike most pumice which can float on water.
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www.galleries.com/rocks/scoria.htm
www.galleries.com/rocks/scoria.htm
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We use the scientific name "scoria" for this rock, but it is also known by other names: ... Basalt is a dark-colored rock that formed as lava cooled and hardened. Scoria is a type of basalt that's full of bubble holes. The bubbles formed as the lava was blasted out of a volcano, and were trapped as the lava cooled...
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www.saltthesandbox.org/rocks/scoriabasalt.htm
www.saltthesandbox.org/rocks/scoriabasalt.htm
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Producers of Quality Scoria Products; Home : About Us : Products : Contact Us : Technical Info : Links : Site Map ... Pumice Rock New Zealand ... © 2008. Web by Traff1k. Web Site Designer New Zealand NZ.
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www.tauposcoria.co.nz/
www.tauposcoria.co.nz/
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New Zealand | UK ... Pumice Rock New Zealand ... Scoria Quarry New Zealand...
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www.tauposcoria.co.nz/industry_sites.htm
www.tauposcoria.co.nz/industry_sites.htm
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Scoria: Iceland ... Summary :; Pumice is a white or grey, highly vesiculated pyroclastic material. It is a form of froth-like volcanic glass ... Scoria is the basltic equivalent of pumice. Certain scoriae, sometimes called cinders or volcanic cinder actually resemble cinders from a coal furnace as the photo shows above.
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www.kabrna.com/cpgs/rocks/igneous/pumice.htm
www.kabrna.com/cpgs/rocks/igneous/pumice.htm
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A rock filled with holes, usually black, red, or brown. Formed from gas-filled magma ejected violently from a volcano. Rich in magnesium, scoria doesn't float on water.
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www.fossweb.com/modules3-6/EarthMaterials/activities/ro...
www.fossweb.com/modules3-6/EarthMaterials/activities/rockdatabase/igneous_rocks/scoria.html
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Title: Avian use of scoria rock outcrops ... Description: Avian use of scoria outcrop habitats was compared to use of sagebrush (Artemisia spp.)/grassland habitats. Outcrop habitats exhibited higher species richness, ... Rumble, Mark A. 1987. Avian use of scoria rock outcrops. Great Basin naturalist. 47(4): 625-630...
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www.treesearch.fs.fed.us/pubs/22793
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Scoria is a dark colored, extrusive igneous rock with a vesicular texture. ... Scoria is a dark-colored, vesicular, extrusive igneous rock. The vesicles are a result of trapped gas within the melt at the time of solidification. It often forms as a frothy crust on the top of a lava flow or as material ejected from a volcanic...
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geology.com/rocks/scoria.shtml
geology.com/rocks/scoria.shtml
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