Metamorphic Structures in Laurentian Marbles
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a large marble block sitting on top of a stone slab in the middle of a sidewalk

Large Marble Quarry Operation

A pseudofossil (false fossil). These rhythmically banded structures in marbles from the Laurentians are not fossils. They were formed by metamorphism when Siliceous limestone and dolostone were buried and endured high pressure and temperatures. © Redpath Museum 2012
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Redpath Museum

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