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Because it was orginally a sediment such as sand or mud but was litified into a rock

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Rocks formed from weathered debris from preexisisting rocks are called?

They are called clastic sedimentary rocks.


What are sedimentary rocks from living or once-living material called?

Sedimentary rocks formed from living or once-living material are called organic sedimentary rocks. Examples include limestone, coal, and chalk.


Are sedimentary rocks formed from fragments of other rocks chemical sedimentary rocks?

No, sedimentary rocks formed from fragments of other rocks are called clastic sedimentary rocks. Chemical sedimentary rocks form from minerals that are dissolved in water and precipitate out to form rocks like limestone or halite.


What are rocks made from sediments called?

Sedimentary rocks.


What are rocks called when they are formed by sand rocks and shells?

Rocks formed from sand, rocks, and shells are known as sedimentary rocks. Sandstones, mudstones, and limestone are common examples of sedimentary rocks that can be formed from these materials.


What are sedimentary rocks of weathered rock fragments called?

Sedimentary rocks made of weathered rock fragments are called clastic sedimentary rocks. These rocks are formed from the accumulation and cementation of fragments that have been weathered, eroded, and transported from their original source. Examples include sandstone, shale, and conglomerate.


What is something paleontologists often will find inside of sedimentary rocks?

more rocks!


What are sedimentary rocks form from dissolved minerals called?

They are called chemical sedimentary rocks. Rock salt and rock gypsum are two examples.


Sedimentary rocks that are formed partially by animals and plants are called what?

Sedimentary rocks that are formed partially by animals and plants are called organic sedimentary rocks. These rocks are formed from the accumulation and lithification of the remains or traces of once-living organisms. An example of an organic sedimentary rock is limestone, which is formed from the accumulation of marine organisms' shells and skeletons.


What are striped rock called?

Sedimentary rocks.


What are rocks that form layer by layer over many years called?

They are called sedimentary rocks.


What are sedimentary rock composed of older rocks called?

Sedimentary rocks composed of older rocks are called "conglomerate" or "breccia." These rocks form when fragments of older rocks are compacted and cemented together to create a new rock.