The Setters Formation is a geological formation in Maryland, Pennsylvania, and Delaware. The formation is metamorphic and consists of a complex suite of schist, gneiss, and quartzite.
The Setters Formation is a geological formation in Maryland, Pennsylvania, and Delaware. The formation is metamorphic and consists of a complex suite of schist, gneiss, and quartzite. (en)
The Setters Formation is a geological formation in Maryland, Pennsylvania, and Delaware. The formation is metamorphic and consists of a complex suite of schist, gneiss, and quartzite. (en)