Focus on Sedimentary Environments

A large saline lake

The Great Salt Lake, Utah, USA

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beach sand sample
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full-size image
Sand from sand dunes on the southern shores of the Great Salt Lake. Scale is 20mm long.

Grain composition

Most of the grains are composed of calcium carbonate, in two size fractions (see image 4 for further details).

Look closely at the large image. Can you identify and describe another type of sedimentary grain in the sample?

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