What happens to sediments to form sedimentary rocks?
Pieces of rock are loosened by weathering, then transported to some basin or depression where sediment is trapped. If the sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock.
What transforms sediment into sedimentary rock?
For sediment to become sedimentary rock, it usually undergoes burial, compaction, and cementation. Clastic sedimentary rocks are the result of weathering and erosion of source rocks, which turns them into pieces—clasts—of rocks and minerals. They are most often transported by water and deposited as layers of sediment.
What is the process in which sediments are compacted and converted into sedimentary rocks?
As the layers of sediment build up, the pressure on the lower layers increases. The layers are squeezed together and any water mixed in with the sediments is forced out. This process is called compaction. After compaction and cementation the sedimentary sequence has changed into a sedimentary rock.
What is sedimentary rock that is made up of rock fragments that become compacted or cemented together?
What is shale rock good for?
Shale has many commercial uses. It is a source material in the ceramics industry to make brick, tile, and pottery. Shale used to make pottery and building materials requires little processing besides crushing and mixing with water. Crushing shale and heating it with limestone makes cement for the construction industry.
Where do you find shale rock?
Shales are often found with layers of sandstone or limestone. They typically form in environments where muds, silts, and other sediments were deposited by gentle transporting currents and became compacted, as, for example, the deep-ocean floor, basins of shallow seas, river floodplains, and playas.
Is shale a strong rock?
Shale is a hardened, compacted clay or silty clay that commonly breaks along bedding planes some of which are no thicker than paper. The best exposures are found beneath ledges of harder more resistant rocks such as limestone and sandstones. Most shales are soft enough to be cut with a knife and can be very brittle.
How far down is shale rock?
Shale formations are ubiquitous in sedimentary basins and, as a result, the main organic-rich shale formations have already been identified in most regions of the world. The depths vary from near surface to several 1000 feet underground, whereas the thickness varies from tens of feet to several hundred feet.
Is Clay a shale?
Shale is a sedimentary rock composed of very fine clay particles. Clay forms from the decomposition of the mineral feldspar. Other minerals present in shale are quartz, mica, pyrite, and organic matter.
What is another name for shale?
What is another word for shale?
What is the main difference between shale and claystone?
Shale is a fine-grained sedimentary rock which is formed by the compaction of silt and clay-size mineral particles. Claystone is a fine-grained, dark gray to pink sedimentary rock which mainly consists of compacted and hardened clay. These rocks are composed of many distinct minerals.
Is shale smaller than siltstone?
Shale is a rock formed mainly of fragments which are silt sized and smaller. Siltstone is a rock, made mostly of particles which are silt-sized. Clay is a size, as well as a mineral group name (because most grains that are the size of clay, actually ARE clay).
What does siltstone turn into?
Siltstone is a sedimentary rock composed mainly of silt-sized particles. It forms where water, wind, or ice deposit silt, and the silt is then compacted and cemented into a rock. Siltstone is much less common than sandstone and shale.
Is mudstone good to build on?
Carboniferous mudstone and siltstone usually provide good foundation conditions, although, when fully weathered, the mudstone becomes a firm to stiff clay. Since this weathered material has a lower bearing capacity than unweathered rock, it may be necessary to place foundations below the weathered zone.