How is weathering related to erosion?
Answers
Answer:
Weathering and erosion are part of the terrestrial modeling transformations dynamics occurring throughout geological time.
Explanation:
The process of weathering consists of the alteration (chemical, physical or biological) of the structures of the rocks. From the moment they are exposed to the earth's surface they are "attacked" by the external agents, beginning the process of transformation of the relief.
Weathering is divided into three types, due to the type of transformation to which the rock is subjected, and may be physical, chemical or biological.
Erosion, in turn, consists of a stage following the process of weathering, (which includes weathering, erosion and deposition). It is at this stage that the material produced by the weathering is transported, beginning the process of modification of the relief.
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This image represents the dynamics of transformations of terrestrial relief
Its main agents are water, winds and ice, which act in the removal of decomposed material. Erosion takes place in different ways, according to the origin of the agent, which can be: rainwater, fluvial, marine, glacial, wind or anthropic, the latter being the result of the mistaken forms of land management.
The erosion process, and consequently the speed over which it operates, is conditioned by several factors, such as: mother rock, climate, relief, vegetation cover and biological agents, among which man. Under favorable environmental conditions, the erosion process is small, resulting in the formation of a thick soil mantle, on which abundant vegetation develops. Under unfavorable conditions, erosion removes large amounts of decomposed material, soil, resulting in a decrease in the vegetation cover and, consequently, in the increase of the erosive action on the soil, exposing the mother rock to the surface, thus initiating a new process of relief modeling.
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Weathering is a key part of the process of soil formation, and soil is critical to our existence on Earth. In other words, we owe our existence to weathering, and we need to take care of our soil!
Weathering is a key part of the process of soil formation, and soil is critical to our existence on Earth. In other words, we owe our existence to weathering, and we need to take care of our soil!Many people refer to any loose material on Earth’s surface as soil, but to geologists (and geology students) soil is the material that includes organic matter, lies within the top few tens of centimetres of the surface, and is important in sustaining plant growth.
Weathering is a key part of the process of soil formation, and soil is critical to our existence on Earth. In other words, we owe our existence to weathering, and we need to take care of our soil!Many people refer to any loose material on Earth’s surface as soil, but to geologists (and geology students) soil is the material that includes organic matter, lies within the top few tens of centimetres of the surface, and is important in sustaining plant growth.Soil is a complex mixture of minerals (approximately 45%), organic matter (approximately 5%), and empty space (approximately 50%, filled to varying degrees with air and water). The mineral content of soils is variable, but is dominated by clay minerals and quartz, along with minor amounts of feldspar and small fragments of rock. The types of weathering that take place within a region have a major influence on soil composition and texture. For example, in a warm climate, where chemical weathering dominates, soils tend to be richer in clay. Soil scientists describe soil texture in terms of the relative proportions of sand, silt, and clay. The sand and silt components in this diagram are dominated by quartz, with lesser amounts of feldspar and rock fragments, while the clay component is dominated by the clay minerals.
Soil forms through accumulation and decay of organic matter and through the mechanical and chemical weathering processes described above. The factors that affect the nature of soil and the rate of its formation include climate (especially average temperature and precipitation amounts, and the consequent types of vegetation), the type of parent material, the slope of the surface, and the amount of time available.
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