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What is a conglomerate rock made out of?

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Conglomerate is a sedimentary rock made of rounded pebbles and sand that is usually held together (cemented) by silica, calcite or iron oxide. It is a stone similar to sandstone but the rock particles are rounded or angular gravel rather than sand. read more

Conglomerate has very few commercial uses. Its inability to break cleanly makes it a poor candidate for dimension stone, and its variable composition makes it a rock of unreliable physical strength and durability. Conglomerate can be crushed to make a fine aggregate that can be used where a low-performance material is suitable. read more

Conglomerate is made up of rounded pebbles cemented together. The pebbles have been rounded by the action of moving water. This could be from a river or stream or from waves on a long ago beach. Because they have been transported by water the pebbles may be from a wide variety of rock types. read more

Conglomerate ( /kəŋˈɡlɒmərᵻt/) is a coarse-grained clastic sedimentary rock that is composed of a substantial fraction of rounded to subangular gravel-size clasts, e.g., granules, pebbles, cobbles, and boulders, larger than 2 mm (0.079 in) in diameter. read more

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