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Pillow Basalts in Archean Mona Schist |
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Empire/Tilden Mine |
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Kona Dolomite Quarry (Lindberg Quarry). Middle Proterozoic. |
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Presque Isle Peridotite and Jacobsville Sandstone (close up) |
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Presque Isle Peridotite and Jacobsville Sandstone. |
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Sugarloaf Mountain. Archean Granite. |
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Several Rocks at Negaunee. Mona Schist unconformity overlain by Proterozoic sequence. |
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Jasper Knob. In the city of Ishpeming. Consists of precambrian jaspilite which is thin alternating layers of specular hematite and red chert. |
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Archean Fragmental Dacite. |
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Michigamme. Proterozoic. |
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Harvey Quarry |
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Close up of Harvey Quarry. |
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Marquette Area overview map. |