Author: Late Carboniferous Language: Windsor Group ISBN:
Age: Late Carboniferous
Geological Unit(s): Windsor Group
This rock is a micritic limestone: a very-fine grained calcium carbonate-rich sedimentary rock. Limestones are often easy to recognize because they fizz in acid, resulting from the reaction between the acid and carbonate, which produces carbon dioxide gas. This rock contains several brachiopods (clam-like shelly organisms – Look closely!) The sediment within this rock was deposited in a relatively calm water setting, such as a deep lagoon. You may also notice small amounts of the brassy mineral pyrite (FeS2) present in this rock.
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