Basalt, gravel, and tuffaceous sedimentary rocks

Basalt flows, cinder and lava cones, gravel, and tuffaceous sedimentary rocks mostly in Elko and some in Humboldt Counties. This unit includes the Banbury Formation (Stewart and Carlson, 1978) and the Big Island Formation in Elko County and other unnamed units. It corresponds to unit Tbg from the 1978 State map.
State Nevada
Name Basalt, gravel, and tuffaceous sedimentary rocks
Geologic age Miocene
Lithologic constituents
Major
Igneous > Volcanic > Mafic-volcanic > Basalt (Flow, Pyroclastic-cinder cone, Pyroclastic-tuff)
Sedimentary (Tuffaceous)tuffaceous sedimentary rocks
References
NGMDB product
Counties Elko - Humboldt