State | Wisconsin |
---|---|
Name | Porphyritic granite |
Geologic age | Early Proterozoic |
Lithologic constituents | Major
Igneous > Plutonic > Granitic > Granite (Stock or pipe)Granite containing plagioclase, microcline, and quartz phenocrysts in a fine-grained granophyric matrix. Probably subvolcanic intrusions related to volcanic rocks of 1835- to 1845-Ma age group
|
Comments | Pembine-Wausau terrane |
References | |
NGMDB product | |
Counties | Langlade - Marathon |