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Sandstone may be any color, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black.

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Sandstone may be any color, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black.

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Conglomerate rock is found in beige, black, brown, buff, light to dark grey, orange, rust, white, yellow colors.

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Conglomerate rock is found in beige, black, brown, buff, light to dark grey, orange, rust, white, yellow colors.

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Conglomerate can sometimes be used as a prospecting tool. For example, most diamond deposits are hosted in kimberlite. If a conglomerate contains clasts of kimberlite, then the source of that kimberlite must be somewhere upstream.

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Conglomerate can sometimes be used as a prospecting tool. For example, most diamond deposits are hosted in kimberlite. If a conglomerate contains clasts of kimberlite, then the source of that kimberlite must be somewhere upstream.

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Conglomerate can be crushed to make a fine aggregate that can be used where a low-performance material is suitable. Many conglomerates are colorful and attractive rocks, but they are only rarely used as an ornamental stone for interior use.

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Conglomerate can be crushed to make a fine aggregate that can be used where a low-performance material is suitable. Many conglomerates are colorful and attractive rocks, but they are only rarely used as an ornamental stone for interior use.

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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.

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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.

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Conglomerates often begin by being deposited as a sediment consisting mainly of pebble and cobble-size clasts. The finer-size sand and clay, which fill the spaces between the larger clasts, is often deposited later on top of the large clasts and then sifts down between them to fill the interstitial spaces.  The deposition of a chemical cement then binds the sediment into a rock.

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Conglomerates often begin by being deposited as a sediment consisting mainly of pebble and cobble-size clasts. The finer-size sand and clay, which fill the spaces between the larger clasts, is often deposited later on top of the large clasts and then sifts down between them to fill the interstitial spaces.  The deposition of a chemical cement then binds the sediment into a rock.

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Conglomerate forms where sediments of rounded clasts at least two millimeters in diameter accumulate. It takes a strong water current to transport and shape particles this large. So the environment of deposition might be along a swiftly flowing stream or a beach with strong waves. There must also be a source of large-size sediment particles somewhere up current. The rounded shape of the clasts reveals that they were tumbled by running water or moving waves.

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Conglomerate forms where sediments of rounded clasts at least two millimeters in diameter accumulate. It takes a strong water current to transport and shape particles this large. So the environment of deposition might be along a swiftly flowing stream or a beach with strong waves. There must also be a source of large-size sediment particles somewhere up current. The rounded shape of the clasts reveals that they were tumbled by running water or moving waves.

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Conglomerate can have a variety of compositions. As a clastic sedimentary rock, it can contain clasts of any rock material or weathering product that is washed downstream or down current. The rounded clasts of conglomerate can be mineral particles such as quartz, or they can be sedimentary, metamorphic, or igneous rock fragments. The matrix that binds the large clasts together can be a mixture of sand, mud, and chemical cement.

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Conglomerate can have a variety of compositions. As a clastic sedimentary rock, it can contain clasts of any rock material or weathering product that is washed downstream or down current. The rounded clasts of conglomerate can be mineral particles such as quartz, or they can be sedimentary, metamorphic, or igneous rock fragments. The matrix that binds the large clasts together can be a mixture of sand, mud, and chemical cement.

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Conglomerate is a clastic sedimentary rock that contains large (greater than two millimeters in diameter) rounded clasts.  The space between the clasts is generally filled with smaller particles and/or a chemical cement that binds the rock together.

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Conglomerate is a clastic sedimentary rock that contains large (greater than two millimeters in diameter) rounded clasts.  The space between the clasts is generally filled with smaller particles and/or a chemical cement that binds the rock together.

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If the sand is deposited close to its source rock, it will resemble the source rock in composition.  However, the  more time and distance that separate the source rock from the sand deposit, the greater its composition will change during  transport.  Grains that are composed of easily-weathered materials will be modified, and grains that are physically  weak will be reduced in size or destroyed.

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If the sand is deposited close to its source rock, it will resemble the source rock in composition.  However, the  more time and distance that separate the source rock from the sand deposit, the greater its composition will change during  transport.  Grains that are composed of easily-weathered materials will be modified, and grains that are physically  weak will be reduced in size or destroyed.

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The grains of sand in a sandstone are usually particles of mineral, rock, or organic material that have been reduced  to "sand" size by weathering and transported to their depositional site by the action of moving water, wind, or ice.   Their time and distance of transport may be brief or significant, and during that journey the grains are acted upon  by chemical and physical weathering.

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The grains of sand in a sandstone are usually particles of mineral, rock, or organic material that have been reduced  to "sand" size by weathering and transported to their depositional site by the action of moving water, wind, or ice.   Their time and distance of transport may be brief or significant, and during that journey the grains are acted upon  by chemical and physical weathering.

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Sandstone is one of the most common types of sedimentary rock and is found in sedimentary basins throughout  the world.  It is often mined for use as a construction material or as a raw material used in manufacturing.   In the subsurface, sandstone often serves as an aquifer for groundwater or as a reservoir for oil and natural gas.

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Sandstone is one of the most common types of sedimentary rock and is found in sedimentary basins throughout  the world.  It is often mined for use as a construction material or as a raw material used in manufacturing.   In the subsurface, sandstone often serves as an aquifer for groundwater or as a reservoir for oil and natural gas.

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Sandstone is a sedimentary rock composed of sand-size grains of mineral, rock, or organic material. It also contains a cementing material that binds the sand grains together and may contain a matrix of silt- or clay-size particles that occupy the spaces between the sand grains.