Copper Harbor Conglomerate

Red lithic conglomerate and sandstone; mafic to felsic volcanic flows similar to those of the unnamed formation (unit Yu) are interlayered with the sedimentary rocks.
State Michigan
Name Copper Harbor Conglomerate
Geologic age Middle Proterozoic
Lithologic constituents
Major
Sedimentary > Clastic > Conglomerate (Bed)Red lithic conglomerate and sandstone; mafic to felsic volcanic flows similar to those of the unnamed formation (unit Yu) are interlayered with the sedimentary rocks.
Sedimentary > Clastic > Sandstone (Bed)Red lithic conglomerate and sandstone; mafic to felsic volcanic flows similar to those of the unnamed formation (unit Yu) are interlayered with the sedimentary rocks.
Minor
Igneous > Volcanic > Mafic-volcanic (Flow)Red lithic conglomerate and sandstone; mafic to felsic volcanic flows similar to those of the unnamed formation (unit Yu) are interlayered with the sedimentary rocks.
Comments Note: The unnamed formation has since been named the Porcupine Volcanics (""Ypv"").
References
NGMDB product
Counties Gogebic - Houghton - Keweenaw - Ontonagon