Ascutney Mountain stock – tuffs

Trachytic to rhyolitic tuffs, and breccias containing fragments of volcanic rocks having trachytic flow structure and layering. Interpreted as volcanic rocks of the edifice. Part of the White Mountain Igneous Suite; Ascutney Mountain igneous complex - Consists of two plutons, a partial ring dike, and screens of volcanic rocks. K-Ar ages of 122 to 120 Ma (Foland and Faul, 1977).
State Vermont
Name Ascutney Mountain stock – tuffs
Geologic age Early Cretaceous
Lithologic constituents
Major
Igneous > Volcanic > Felsic-volcanic > Rhyolite (Pyroclastic-tuff, Volcaniclastic-volcanic breccia)Trachytic to rhyolitic tuffs, and breccias containing fragments of volcanic rocks having trachytic flow structure and layering. Interpreted as volcanic rocks of the edifice.
Igneous > Volcanic > Felsic-volcanic > Trachyte (Pyroclastic-tuff, Volcaniclastic-volcanic breccia)Trachytic to rhyolitic tuffs, and breccias containing fragments of volcanic rocks having trachytic flow structure and layering. Interpreted as volcanic rocks of the edifice.
References
NGMDB product
Counties Windsor