what is the difference between clastic chemical and biochemical sedimentary rocks?
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Sedimentary rocks are classified based on how they form and on the size of the sediments, if they are clastic. Clastic sedimentary rocks are formed from rock fragments, or clasts; chemical sedimentary rocks precipitate from fluids; and biochemical sedimentary rocks form as precipitation from living organisms.
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The three main types of sedimentary rocks are clastic, chemical, and organic sedimentary rocks.
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Clastic Sedimentary Rock Classification. Sedimentary rocks are classified on the basis of the texture (grain size) of the rock, and composition. The basic classification only concerned texture, using the Wentworth size scale. But any full rock name must specify both texture and composition.
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Organic Sedimentary Rocks. Organic sedimentary rocks form from the accumulation and lithification of organic debris, such as leaves, roots, and other plant or animal material. Rocks that were once swampy sediments or peat beds contain carbon and are black, soft, and fossiliferous.
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Clastic sediments or sedimentary rocks are classified based on grain size, clast and cementing material (matrix) composition, and texture. The classification factors are often useful in determining a sample's environment of deposition.
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rocks that have been weathered, eroded, and deposited are called clastic rocks. Clasts are the fragments of rocks and minerals. Examples of clastic rocks are sandstone and mudstone. Non-clastic rocks are created when water evaporates or from the remains of plants and animals.
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Chemical sedimentary rock is formed when minerals, dissolved in water, begin to precipitate out of solution and deposit at the base of the water body.
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Detrital sedimentary rocks are mainly classified by the size of their grain. ... If you have rock that contains grains larger than sand, you have conglomerate if it contains large rounded grains and breccia if it contains angular grains. Chemical sedimentary rocks are composed of mineral crystals that form out of solution.
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2) Biogenic (biochemical) sedimentary rocks are those composed of materials formed by the activity of living organisms such as coal (compacted undecayed plant matter) and many limestones which are made up of the shells or other skeletal fragments from marine organisms.
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Detrital sedimentary rocks are mainly classified by the size of their grain. The largest grain is a boulder, followed by a cobble, a pebble, sand, silt and finally the finest grain, which is clay. ... Chemical sedimentary rocks are composed of mineral crystals that form out of solution.
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Clastic rocks are composed of fragments, or clasts, of pre-existing minerals and rock. A clast is a fragment of geological detritus, chunks and smaller grains of rock broken off other rocks by physical weathering. ( is formed as bits of weathered rock become cemented together.
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Clastic Sedimentary Rocks: Clastic sedimentary rocks are made up of pieces (clasts) of pre-existing rocks. ... Their names are based on their clast or grain size. The smallest grains are called clay, then silt, then sand. Grains larger than 2 millimeters are called pebbles.
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Figure 1: Chemical composition of sedimentary rocks. Encyclopædia Britannica, Inc. For the purposes of the present discussion, three major categories of sedimentary rocks are recognized: (1) terrigenous clastic sedimentary rocks, (2) carbonates (limestone and dolomite), and (3) noncarbonate chemical sedimentary rocks.
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Inorganic. Only $0.99/month. ________ is a biochemical sedimentary rock that often forms in carbonate reefs. Limestone.
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Organic sedimentary rocks form from the action of organisms. Examples include fossiliferous limestone and coal. Fossiliferous limestone and coal are two examples of organically-formed sedimentary rocks. This fossiliferous limestone (left) is from Giles County, and was formed from the shells of many aquatic organisms.
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Chemical sedimentary rocks are created when water evaporates and leaves clumps of dissolved minerals behind. Gypsum and dolomite are common chemical sedimentary rocks. Organic sedimentary rocks are created by the collection and calcification of organic debris, including shells, bones and teeth.
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8 replies. Sediments and sedimentary rocks are grouped into two main subdivisions,namely detrital and chemical. Aqueous stones are usually forms of rock and roll which are made because of the deposition regarding materials at the World's area in addition to within just systems associated with drinking water.