Archean felsic volcanic rocks lenticular fiamme. When hot pumice deposits on a cool surface, it is rapidly cooled, recrystallised and welded into quartz with flame-like ending tips. The eutaxiitc texture represents a hot vapour-phase emplacement of the fragmented volcanic materials on the Earth's surface. Flow bands are present in massive, uniform felsic lava flow units. When the viscous lava flow encounters a surface, friction drags the mobile lava and forms internal banding. Structureless hyaloclastite is commonly found in Archean felsic volcanic rocks. In submarine environments, water quenches and cools lava rapidly during volcanic eruption. The flow is fragmented and form glassy volcanic breccia. The
Substance 1987 the on-screen title is "Substance 1983–88") and different background colours are used; the Factory/Qwest release has a grey background, the Japanese VHS release, blue and the LaserDisc, turquoise. The video includes linking sequences which are animated to the accompaniment of instrumental sections from "The Happy One", an otherwise unreleased track from the "Technique" sessions. Substance 1987 Substance (also known as Substance 1987) is a compilation album by English alternative dance band New Order. It was released in August 1987 by Factory Records. The album compiles all of the band's singles at that point in their 12-inch versions, along with their