scoria

scoria
    a) [ soils ]
   Vesicular rock fragments e 2 mm in at least one dimension and a specific gravity > 2.0, or a cindery crust of such material on the surface of andesitic or basaltic lava; the vesicular nature is due to the escape of volcanic gases before solidification; it is usually heavier, darker, and more crystalline than pumice.
   Compare: cinders, pumice, tephra.
    b) [ geology ]
   The same as (a) except no size restrictions are applied.
   SW

Glossary of landform and geologic terms. 2013.

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  • Scoria — is a textural term for macrovesicular volcanic rock. It is commonly, but not exclusively, basaltic or andesitic in composition. Scoria is light as a result of numerous macroscopic ellipsoidal vesicles, but most scoria has a specific gravity… …   Wikipedia

  • scoria — / skorja/ s.f. [dal lat. scoria, gr. skōría, der. di skō̂r escremento ]. 1. (metall.) [spesso al plur., ciò che resta dopo l estrazione o la lavorazione di un metallo e sim.: s. di lavorazione ] ▶◀ (ant.) capomorto, residuo, rifiuto, scarto.… …   Enciclopedia Italiana

  • Scoria — Sco ri*a, n.; pl. {Scori[ae]}. [L., fr. Gr. ?, fr. ? dung, ordure.] 1. The recrement of metals in fusion, or the slag rejected after the reduction of metallic ores; dross. [1913 Webster] 2. Cellular slaggy lava; volcanic cinders. [1913 Webster] …   The Collaborative International Dictionary of English

  • Scorĭa — (gr.), 1) Schlacke; 2) Hautschlacke, der durch die Hautausdünstung abgehende verbrauchte Thierstoff, dessen Zurückballung die sogenannten Scorischen (rheumatischen) Krankheiten erzeugt …   Pierer's Universal-Lexikon

  • scoria — [skôr′ē ə] n. pl. scoriae [skôr′ēē΄] [ME < L < Gr skōria, refuse, dross < skōr, dung: see SCATO ] 1. the slag or refuse left after metal has been smelted from ore 2. loose, cinderlike lava scoriaceous [skôr΄ēā′shəs] adj …   English World dictionary

  • scoria — ALASKA VOLCANO OBSERVATORY GLOSSARY A cinder like volcanic rock, usually dark brown, red brown, or black in color. GLOSSARY OF VOLCANIC TERMS Solidified fragments of quenched, highly vesicular (>60%) mafic magma or lava (Cashman et al., 2000,… …   Glossary of volcanic terms

  • scoria — scoriaceous /skawr ee ay sheuhs, skohr /, adj. /skawr ee euh, skohr /, n., pl. scoriae /skawr ee ee , skohr /. 1. Metall. the refuse, dross, or slag left after melting or smelting metal; scum. 2. Geol. a cinderlike basic cellular lava. [1350… …   Universalium

  • scoria — scò·ria s.f. 1a. TS metall. spec. al pl., residuo solido di un processo di estrazione di un metallo da un minerale che lo contiene 1b. TS metall. spec. al pl., residuo di un processo di rifusione o di affinazione di un metallo o di una lega… …   Dizionario italiano

  • scoria — sco•ri•a [[t]ˈskɔr i ə, ˈskoʊr [/t]] n. pl. sco•ri•ae [[t]ˈskɔr iˌi, ˈskoʊr [/t]] 1) mel the refuse, dross, or slag left after melting or smelting metal 2) gel Geol. a cinderlike basic cellular lava • Etymology: 1350–1400; ME < L scōria <… …   From formal English to slang

  • Scoria-Verfahren — zum Brikettieren von Eisenerzen, s. S. 102 …   Lexikon der gesamten Technik

  • scoria cone — GLOSSARY OF VOLCANIC TERMS Small volcanic landforms formed from focused (single vent) subaerial strombolian eruptions of basalt or basaltic andesite magma. These features have an inverted cone shaped profile and are generally circular in plan,… …   Glossary of volcanic terms

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