scoriaceous , auch: scoriac , auch: scorious

Some of the flows are still so young as to preserve their scoriaceous surface.

These flows are generally less than a metre thick and mostly basaltic with scoriaceous inclusions.

Tezontle is a well-cemented, agglomeritic and scoriaceous rock.

As its name suggests, Ruby Mountain is ruby-colored due to the scoriaceous tephra that covers much of its summit.

These volcanic rocks form scoriaceous lava flows, breccias, volcanic bombs and pillow lavas.

Furthermore, other known impact glasses (impactites) such as Darwin Glass are bubbly, frothy, scoriaceous and contain partially melted materials.

The base of the island is scoriaceous lava in cubes, which are exposed all round the shore and washed by the waves, and identified as vesicular olivine basalt.

In the Pebidian Supergroup the basal unit is largely basaltic and exhibits columnar jointing, auto brecciated lavas, scoriaceous and fine grained tuffs.

A dredge (TD-16) to sample the inferred source of this plume on the eastern flank of the volcano returned a full bag of aphyric, scoriaceous basalt ranging from fresh to coral-encrusted.

Generally the deposit grades upwards from massive, clast-supported, scoriaceous block breccias (up to 130m thick), through massive lapilli-rich tuffs, into porcellanous fine tuffs at the top (up to 70m thick).

The main edifice of the volcano is composed of basalt and basaltic andesite lava flows, along with pyroclastic deposits and scoriaceous material, originating from strombolian eruptions which are thought to have made up the later stages of the volcano's growth.