MORTON GNEISS

Morton, Minnesota
Oldest Rock in the United States — 3.524 billion years old
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Outcrop of the Morton Gneiss west of Morton, Minnesota.

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Morton Gneiss used as rough-cut stone that covers the exterior of the Zion Lutheran Church, Morton, Minnesota

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Morton Gneiss used as facing stone at the corner of Main Street and West Second Street (Highway 19) in Morton, Minnesota.

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Close-up of the black-and-pink swirls in the Morton Gneiss on a building on West Burnside Street in Portland, Oregon.

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Morton Gneiss used as countertops at the McDonald's in Redwood Falls, Minnesota.

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Morton Gneiss covers the exterior of the Adler Planetarium in Chicago.