Conglomerate or breccia depending on the shape of the gravel.
A sedimentary rock that is sometimes formed by deposits of shell fragments is LIMESTONE!!
Sandstone is a sedimentary rock formed from layer upon layer of deposited sand which undergoes lithification.
Claystone, and shale are sedimentary rocks formed from lithified deposits of clay.
A sedimentary rock formed from sand deposits is called a 'Sandstone' or generically a 'Psammite'.
Sandstone.
Sandstone!
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Sandstone.
Sedimentary rock is the rock formed as a result of deposits from weathering and erosion. Sedimentary rock can be millions of years old.
claystone
shale
Shale