Biologically, Chemically and Mechanically.
1. Organically. 2. Mechanically. and 3. Chemically.
Three main ways and are classified accordingly. Igneous rocks form from molten material called magma.
Three ways ingenuous rocks form are by magma cooling below, at or beneath the surface. Magma forms when rock is heated, changes composition and/or pressure is released.
Sedimentary rocks are formed in three basic ways: by physical processes, by plants and animals,and by chemical processes. The Sedimentary rock can be form into the igneous rock by five ways. They are as followed: uplift, eroison, transport, depostion, and lithification. You would be more likely to look at the rock cycle in the online dictionary of Wikipedia for the rock cycle.
Igneous, sedimentary, and metamorphic rocks are differentin their method of formation. Igneous rocks solidify from melt, sedimentary rocks form from the lithification of sediments, and metamorphic rocks form from the application of heat and/or pressure over time. These rocks are alike in some ways, too, however. Igneous, sedimentary, and metamorphic rocks can share compositions -- they can be composed of cominations of biotite, calcite, quartz or other minerals. Their origin can also be shared. For example, a composite volcano has all three types: a sedimentary rock formed from welded pyroclastics, called welded volcanic tuff, piles up on the slopes. Lava solidifies on the slopes as well, forming igneous rocks. Inside the volcano, solid rock is exposed to heat but doesn't melt. This rock is transformed into metamorphic rock.
The key word here is 'form'. Sedimentary rocks can be broken down into three informal groups. The first group is known as siliciclastic, or just as clastics and these include rocks like sandstone, shale, and conglomerates. These rocks are transported and deposited by water, wind, or gravity. Eventually when they are buried under enough pressure they will become lithified by diagenesis. That is a process that 'cements' them together. They are also described as allocthonous, meaning they originated in a different place from where they were deposited. The second informal group of sedimentary rocks are carbonates. Carbonates include limestone and dolomite. These rocks are mostly built by living organisms. Shells from marine organisms, corals, and many algaes all form carbonate rocks. Some but not all carbonates are autochthonous, meaning they originated in the place they were found. Carbonate rocks often form as rock quite quickly and undergo various stages of later diagenesis. The key thing to remember about carbonate rocks is they were "born" and not just transported like clastics. Most carbonates are formed in the ocean. The third informal group of sedimentary rocks are called chemical sedimentary rocks. These form by evaporation or precipitation from water, so at some point they were completely dissolved. Examples of this type of rock are gypsum, halite (sodium chloride salt), and sylvite (potassium chloride salt). These rocks can form under certain ocean conditions or in places like dry lakes where the evaporation leaves them behind.
Three main ways and are classified accordingly. Igneous rocks form from molten material called magma.
Three main ways and are classified accordingly. Igneous rocks form from molten material called magma.
1. Organically. 2. Mechanically. and 3. Chemically.
lava cooling
Sedimentary rocks are made up of materials that were once part of another rock. Most sediments are deposited on ocean floors or at the bottom of rivers and lakes.Clastic sedimentary rocks form from layers of sediments. Pressure causes the water around the sediments to be squeezed out and the sediments are cemented together.
Sedimentary rock is one of the three main rock groups (along with igneous and metamorphic rocks) and is formed in three main ways-by the deposition of the weathered remains of other rocks (known as clastic sedimentary rocks); by the deposition of the results of biogenic activity; and by precipitation from solution. Sedimentary rocks include common types such as chalk, limestone, sandstone, and shale. :)
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sediment
Sedimentary rocks are formed as a result of deposition of materials at the surface of the Earth or within water bodies.
Three ways ingenuous rocks form are by magma cooling below, at or beneath the surface. Magma forms when rock is heated, changes composition and/or pressure is released.
Sedimentary rocks are formed in three basic ways: by physical processes, by plants and animals,and by chemical processes. The Sedimentary rock can be form into the igneous rock by five ways. They are as followed: uplift, eroison, transport, depostion, and lithification. You would be more likely to look at the rock cycle in the online dictionary of Wikipedia for the rock cycle.
pieces of rock