A modern carbonate beach and lagoon

Grassy Key, Florida Keys, USA


	Tidal flat sediment, mounted in resin and polished. Scale in mm.

Ignore the 'swirly' effect in the sample, which is a result of the making of the resin mount, not a property of the original sediment.

On brief examination of the sediment (use the large image), what components can you identify? What range of grain size does the sample show?

Further information on grain size and other sediment properties.