Geology and Minerals
The Bare Hills Historic District encompasses a residential area north of Baltimore, Maryland, in Baltimore County, which had industrial beginnings before being transformed into a suburb of the city. The district includes Lake Roland Park (formerly named Robert E. Lee Park,) as well as a cluster of largely vernacular dwellings between the park and Falls Turnpike that was built mainly in the 19th century.
Charnockite, St. Thomas Mount.
Duchesne River Formation.
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