Badwater Greenstone

Dark-greenish-gray, pillowed to massive tholeiitic basalt and pyroclastic rocks. Correlated with the Hemlock Formation on basis of geology and similarity in chemical composition.
State Wisconsin
Name Badwater Greenstone
Geologic age Early Proterozoic
Lithologic constituents
Igneous > Volcanic > Mafic-volcanic > Basalt (Pyroclastic, Flow)
Comments Continental margin assemblage (north of Niagara Fault).
NGMDB product
Counties Florence - Forest - Vilas