vitric tuff

vitric tuff

[′vi·trik ′təf]
(geology)
Tuff composed principally of volcanic glass fragments.
References in periodicals archive ?
* lacustrine vitric tuff host rocks provide large volumes of reactive volcanic glass;
There is thus a spatial association with geothermal systems and faults in the volcanic area of Paipa to provide a source and conduit for heated alkaline solutions which react with vitric tuffs to form the zeolites.