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Stromatolite in Copper Harbor Conglomerate, Keweenaw Co.
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Herringbone cross-bedding in a sandstone layer of the Copper Harbor Conglomerate, Keweenaw Co.
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Filed trip with USGS geologist, Dickinson Co.
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Submarine debris flow, Marinette Co WI
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Andesite clast within submarine debris flow, Marinette Co WI
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Hyaloclastite submarine debris flow, Marinette Co WI
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Serpentinite, Marinette Co WI
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Sericite schist outcrop, Dickinson Co.
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Unconformity between Fern Creek diamictite (dark) and Carney Lake gneiss (light), Dickinson Co.
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Quartzite made "dirty" by sericite, Dickinson Co.
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Mafic dike cutting foliated gabbro, Marinette Co WI
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Keweenawan mafic dike cutting granite, Marquette Co.
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Migmatitic gneiss, Marquette Co.
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Closeup of migmatitic structure, Marquette Co.
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Closeup of migmatitic structure, Marquette Co.
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PreCambrian ripple marks in Sturgeon River quartzite, Dickinson Co.
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