Concretion rocks

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Lake Michigan Stones, Rock Identification, Rocks And Fossils, Bad Girl Quotes, Geology Rocks, Rock And Pebbles, Sedimentary Rocks, Cool Rocks, Latin Words

Concretion The word "concretion" is derived from the Latin words "con" – meaning "together" – and "cresco" – meaning "to grow." A rock that grows? Is there really such a thing? ...so what exactly is a concretion? A concretion is a compact mass of mineral matter, usually spherical or disk-shaped, embedded in a host rock of a different composition. This hard, round mass of sedimentary rock cement is carried into place by ground water. They usually form early in the burial history of sediment…

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