Tufflava

Tufflava

 

a tuffaceous volcanic rock consisting of lava, ash, and fragments of glass. Tufflavas are intermediate in structure and method of formation between lavas and tuffs. Ignimbrite is a variety of tufflava.

References in periodicals archive ?
However, in rare cases the pressure of the overlying water column may be high enough to produce tufflava (tuff-like/lava-like rocks) that contain evidence of heat retention (cf.
12 Pb-Zn deposits (New Brunswick), the presence of peperites in association with pyroclastic rocks and tufflavas indicates the in situ emplacement of pyroclastic rocks (cf.
These units are primary pyroclastic, and have been interpreted as tufflavas (cf.