Portage Lake Volcanics; Rhyolite at Bergland

Portage Lake Volcanics; Rhyolite at Bergland
State Michigan
Name Portage Lake Volcanics; Rhyolite at Bergland
Geologic age Middle Proterozoic
Lithologic constituents
Major
Igneous > Volcanic > Felsic-volcanic > Rhyolite (Flow)rhyolite at Bergland MI, part of the Portage Lake Volcanics
References
NGMDB product
Counties Ontonagon