State | Michigan |
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Name | Metagabbro |
Geologic age | Early Proterozoic |
Lithologic constituents |
Major
Metamorphic > Metaigneous > Metaintrusive > Metagabbromafic to ultramafic bodies defined and delineated principally by positive magnetic and gravity anomalies; includes diorite bodies.
Igneous > Plutonic > Ultramaficmafic to ultramafic bodies defined and delineated principally by positive magnetic and gravity anomalies; includes diorite bodies.
Minor
Igneous > Plutonic > Dioritic > Dioritemafic to ultramafic bodies defined and delineated principally by positive magnetic and gravity anomalies; includes diorite bodies.
|
Comments | This occurs as a sliver in northwestern Michigan, just south of the Niagara Fault zone (in the Pembine-Wausau terrane.) |
References | |
NGMDB product | |
Counties | Dickinson - Menominee |