Bible Encyclopedias
Scoria

1911 Encyclopedia Britannica

(Lat. scoria, slag), in geology, a name applied to lava when moderately vesicular and having a structure like that of a clinker. Ejected masses of scoriaceous lava are often called "cinders," a term conveniently used for all lumps of vesicular lava (see Volcano).

Bibliography Information
Chisholm, Hugh, General Editor. Entry for 'Scoria'. 1911 Encyclopedia Britanica. https://www.studylight.org/​encyclopedias/​eng/​bri/​s/scoria.html. 1910.