Focus on Sedimentary Environments

A tropical carbonate beach

Bolongo Beach, St Thomas, US Virgin Islands

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beach sediment
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enlarged image
Carbonate gravel on Bolongo Beach
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Identifying sediment components

In this closer view of the carbonate beach gravel, you should be able to identify some of the components.

 

Which of the following shells or skeletons are clearly identifiable in the image?

bivalve
brachiopod
scleractinian coral
trilobite
green calcareous algae
gastropod

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