Sand or clay layers can make rock {sedimentary rock}|. Water, wind, or ice makes sand or clay layers. Layers can be clastic rock, crystallize from shallow lakes or seas by evaporation to make sediment, or precipitate to make sediment. Sedimentary rocks can be calcite limestone and calcium-and-magnesium carbonate dolomite. Sedimentary rocks are the only rocks that have no reheating, so they can retain fossil imprints.
Layers can cement together by pressure {clastic rock}.
Sedimentary rocks {conglomerate rock} can come from stones and gravel in hardened clay.
Sedimentary rocks {sandstone}| can come from sand.
Sedimentary rocks {shale}| can come from clay and wood.
5-Earth Science-Mineral-Kinds-Rock
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Date Modified: 2022.0225