Carbonate Rock Classification

Floatstone

1. Floatstone

Carbonate mud matrix-supported; more than 10% of sleletal grains (crinoids, bryozoans, trilobite) is > 2mm in grain size.

Mississippian, New Mexico, USA

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2. Floatstone

Carbonate mud matrix-supported; more than 10% of skeletal grains (crinoids, bryozoans, sponge spicules, ostracods) is > 2mm in size.

Mississippian, New Mexico, USA

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Floatstone

crinoid ossicle

Fenestellid bryozoan

Trilobite

Floatstone

Sponge spicule

Crinoid ossicle

Floatstone

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Floatstone

crinoid ossicle

Fenestellid bryozoan

Trilobite

Floatstone

Sponge spicule

Crinoid ossicle