The Rock Cycle The rock cycle is a concept used to explain how the three basic rock types are related and how they help processes Earth and how rocks change from one type of rock into another type of rock. Rocks change shape, form and type by a few different causes · The Rock Cycle Essay The rock cycle involves of a chain of continual progressions through which earth materials change from one form to another over time. Some processes in the rock cycle happen over millions of · Rock Cycle Essay Example When the processes of vulcanicity, cooling and solidification of lava take place on the earth surface, extrusive igneous or volcanic rocks are blogger.com rocks exposed on the land surface are subject to exogenetic processes. They include commonly denudation (weathering, erosion, transportation) and blogger.comted Reading Time: 4 mins
Rock Cycle Essay - Words | Cram
Please join StudyMode to read the full document. The rock cycle involves of a chain of continual progressions through which earth materials change from one form to another over time. Some processes in the rock cycle happen over millions of years and others occur much more quickly.
There is no real starting or completion to the rock cycle ; however, it may be appropriate to begin investigating the rock cycle with magma Bergman Magma, or molten rockforms only at certain locations within the earth, mostly along plate boundaries.
Magma crystallizes when it is permitted to cool. Igneous rocks are formed from cooled magma. Physical and chemical reactions caused by contact with air, water, and organic entities cause the rocks to break down.
Erosion occurs once rocks are broken down; wind, moving water, and glaciers carry pieces of the rocks away. Moving water is the most conventional vehicle of erosion; every year tons of sediment is carried by major As the sediment is buried it is compacted as more and more material is deposited on top. Eventually the sediment will become so dense that it is essentially rock. This process is known as lithification, rock cycle essay.
The melt is made up of various components of pre-existing rocks which have been subjected to melting either at subduction zones or within the Earth's mantle. The melt is hot and so passes upward through cooler country rock. As it moves it cools and various rock types will form through a process known as fractional crystallization.
Igneous rocks can be seen at mid ocean ridges, areas of island arc volcanism or in intra-plate hotspots. The processes involved will change the composition and fabric of the rock and their original nature is often hard to distinguish. Metamorphic rocks are typically found in areas of mountain building The aggregate minerals forming the rock are held together by chemical bonds, rock cycle essay.
The types and abundance of minerals in a rock are determined by the manner in which the rock was formed. Many rocks contain silica SiO2 ; a compound of silicon and oxygen that forms This material forms crystals with other compounds in the rock.
The proportion of silica in rocks and minerals is a major factor in determining their name and properties. These physical properties are the end result of the processes that formed the rocks. These events produce three general classes of rock : igneous, sedimentary, rock cycle essay, and metamorphic. The three classes of rocks are subdivided into many groups. However, there are no hard and fast boundaries between allied rocks.
By increase or decrease in The rock cycle is an illustration that is used to describe how the three rock types are related and how Earth processes rock cycle essay a rock from one type to another over time.
Each group contains a collection of rock types that rock cycle essay from each other on the basis of the size, shape and arrangement of mineral grains. Due to the driving forces of the rock cyclerock cycle essay, plate tectonics and the water cyclerocks are forced to change as they encounter new environments as they do rock cycle essay remain in equilibrium.
Weathering should not be confused with erosion, which involves the movement of rocks and minerals by agents such as water, ice, wind and gravity. There are three types of weathering: physical, chemical and biological. Physical weathering involves the breakdown of rocks and soils through direct contact with atmospheric conditions such as heat, water ice and pressure. Chemical weathering involves rain water combining with of the rock cycle with reference to rock cycle essay geology in Hong Kong.
To what extent are the rock types responsible for the deep weathering profile in the territory? The remaining area is underlain by sedimentary rocks superficial deposits mainly in the North West area. Other than the above rock types, there still a kind of rock which covers only a small area of Hong Kong, its metamorphic rockmainly can be found in the north-western part of the New Territories.
Dated back to the late Jurassic age, Hong Kong was located near to the destructive plate boundary on the south- east coast of China, rock cycle essay pressure during the subduction activity and causing vulcanicity. In the destructive plate boundary, magma currents beneath earth crust converge, dragging two plates together while the heavier plate sinks and being subducted under another plate, the subducted zone will then be melt back to magma again.
Pressure accumulates while the subduction of the heavier plate is occurring, crack will develop on both plates near the boundary allowing magma to seep through them onto the earth surface. Magma that rose through the cracks may soon be cooled down by the temperature of the earth The rock cycle is very important to us because it explains the way the different types of rocks are formed on earth. The importance of the rock cycle lies in how it forms and recycles the various layers that make up the Earth.
To do this, the cycle moves through three different stages that produce three different types of rock. This type of rock is made as magma cools over time, crystalline structures begin to form.
In effect, igneous rock can form rock cycle essay the surface or within the underground layers. Volcanic Rocks also called extrusive igneous rocks include all the products resulting from eruptions of lava flows and fragmented debris called pyroclasts.
Plutonic Rocks also called intrusive igneous rocks are those that have solidified below ground; plutonic comes from Pluto, the Greek god of the underworld. Metamorphic rocks are created when other History of Rock Worksheet Write a to word explanation regarding the role of plate rock cycle essay in the origin of igneous rocks. Igneous rocks can come from two hot liquid like materials, rock cycle essay, which are lava and magma, these to substances are a lot alike, magma is what lava is before it is taken to the Earth's surface by a volcano eruption.
These substances being such a large part of the forming of Igneous rocks is where the rock gets its name, the word igneous comes from the word ignis, which is the Latin word for fire. Magma and Lava are a consistency like molten metal and they carry crystallized minerals and are hot enough to change existing rocks forms.
Igneous rocks are created in three places. The first is where rock cycle essay lithospheric plates pull apart making a gap in the at the ridges under the ocean. The second is rock cycle essay the continental crust is forced together. The third is where the plates come together, rock cycle essay. As the lava or magma moves they collect different minerals and these minerals begin to crystallize as the lava or magma cools.
The speed of the cooling process helps to determine the physical characteristics of the rocks. With the movement and the new minerals that come this will change the rock. There are two types of Igneous rocks. The first kind of Igneous rock is Extrusive rockwhich is formed regarding the role of plate tectonics in the origin of igneous rocks.
To begin, igneous rocks come from magma, and magma is related to plate tectonics. Magmas differ in composition, temperature and viscosity. These plates collide, rock cycle essay, split apart and slide past each other.
When this type of activity occurs it can cause volcanoes to erupt. There are different types of eruptions from volcanoes. The type of eruption depends on the magma that is located inside the Earth.
There are Hawaain eruptions which consist of a runny lava that flows with ease from the volcano. There are Strombolian eruptions that eject lava and rocks into the air. There are Vulcanian eruptions which are very explosive, rock cycle essay. It all depends on the viscosity of the magma, and the amount of gas that will determine what type of eruption. Igneous rocks form when the magma or lava cool down. There are two types of rock cycle essay rocks, rock cycle essay.
They are either intrusive or extrusive. Sign Up. Sign In. Sign Up Rock cycle essay In. Home Essays Rock Cycle. Rock Cycle Topics: Sedimentary rockIgneous rockRock Pages: 4 words Published: October 13, Continue Reading Please join StudyMode to read the full document.
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· The Rock Cycle Essay The rock cycle involves of a chain of continual progressions through which earth materials change from one form to another over time. Some processes in the rock cycle happen over millions of · The rock cycle is an illustration that is used to describe how the three rock types are related and how Earth processes change a rock from one type to another over time. Each group contains a collection of rock types that differ from each other on the basis of the size, shape and arrangement of mineral grains · Rock Cycle Essay Example When the processes of vulcanicity, cooling and solidification of lava take place on the earth surface, extrusive igneous or volcanic rocks are blogger.com rocks exposed on the land surface are subject to exogenetic processes. They include commonly denudation (weathering, erosion, transportation) and blogger.comted Reading Time: 4 mins
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