What Is Weathering? What Are Different Types Of Weathering?

33 Answers

attz malik Profile
attz malik answered
The breakdown and decomposition of rocks and minerals at or near the earth surface in response to atmospheric factors is called weathering.
It occurs as a result of both chemical and mechanical process.

There are basically two types of weathering
1. Mechanical Weathering
2. Chemical Weathering

Mechanical weathering is the physical disintegration of earth material at or near the surface. That is, larger rocks are broken into smaller pieces. A number of process cause mechanical weathering .the three most important are frost action, the development of salt crystals, and root action. If water that soaks into a rock freezes, ice crystals grow and exert pressure on the rock.

Chemical weathering: a number of weathering processes cause a rock to decompose rather then disintegrates .in other words, the mineral composing rocks separate into component parts by chemical reactions rather than fragmentation. The three most important processes are oxidation, hydrolysis and carbonation. Because each of these depends on the availability of water, less chemical weathering occurs in dry and cold areas then warm once.

Mechanical and chemical weathering create soil .the thin layer of fine material containing organic matter, air water and weather rock material that rests on the solid rock below it. Soil type is much more a function of the climate of the region in which it occurs than it is of the kind of bedrock below it. Temperature and rainfall act on minerals, in conjunction with the decaying of vegetation to form soils.
Anonymous Profile
Anonymous answered
Physical disintegration and chemical decomposition of rocks, minerals,
and immature soils at or near the Earth's surface. Physical, chemical,
and biological processes induced or modified by wind, water, and climate
cause the changes. Weathering is distinguished from erosion
in that no transportation of material is involved. A broader
application of erosion, however, includes weathering as a component.
Weathering is also distinguished from metamorphism,
which usually takes place deep in the crust at much higher temperatures
and elevated pressures.

  • Slightly acidic rainwater can react with rock surfaces,
    dissolving them over time. Rocks can also be affected by organic sources
    of chemical reactants.
  • Heat from the sun can cause differences in temperature
    between the surface and the interior of a rock which can cause a
    loosening of the surface called exfoliation.
  • Liquid water penetrates cracks in the rocks surface where
    it can freeze and expand, opening up the cracks for further attack
    in tandem with acidic rainwater.
  • Plant root growth can also cause cracks to further
    expand, making them more vulnerable to frost expansion and chemical
    attack.
  • Underlying rock which is exposed due to erosion of the
    overlying rock becomes free of the pressure it was previously exposed
    to, causing the rock to expand and break apart.
  • Other means of weathering include the expansion of
    crystallizing salts that have been taken in by a rock surface, expansion
    due to the absorption of water, and hydraulic action from
    crashing waves on seashore rock formations.
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Anusha Kodirova Profile
Anusha Kodirova answered
In terms of rocks, weathering is the breaking up (disintegration) and decay (decomposition) of rocks in situ, that is in their place of origin.

weathering, unlike erosion, need to involve the movement of material

there are 2 types, chemical weathering and physical weathering

Chr Gre Profile
Chr Gre answered
By weathering, I believe you mean natural forces that are destructive, slowly, like causing the grand canyon to go form a small river to... What it is today? In the case that is what you mean, rain/water, wind, snow, temperature changes... Rain/water slowly break something down over centuries, usually not causing massive damage unless in the cases of hurricanes or flooding... Wind, does the same thing and can be massively destructive in forces such as tornadoes, hurricanes, even just strong wind. Snow is something that I have seen always causes at least moderate amounts of damage. In colder climates, the roads have to be repaved constantly due to the constant changes in temperature... When the temp changes it causes the roads to expand and contract causing cracks throughout them.
Anonymous Profile
Anonymous answered
Biological,
Onion skin,
freeze thaw and
chemical!
Anonymous Profile
Anonymous answered
Mechanical and chemical
Anonymous Profile
Anonymous answered
The 2 types of Weathering are Mechanical or Physical Weathering and Chemical Weathering
Anonymous Profile
Anonymous answered
The four different types of weathering is: Onion skin; Freeze thaw; Bio-logical and Chemical.
Anonymous Profile
Anonymous answered
Weathering is the breaking down of rock into smaller particles institute and there are two types of weathering
physical and chemical weathering
Anonymous Profile
Anonymous answered
Weathering is the breaking down of rock into smaller particles institute and there are two types of weathering
physical and chemical weathering
Anonymous Profile
Anonymous answered
Physical Weathering (Mechanical),Chemical Weathering (Decomposition)

-The two processes of weathering,mechanical and chemical seldom occur alone

-Since water vapor is present in the air everywhere means that chemical weathering occurs everywhere.

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Anonymous Profile
Anonymous answered
Weathering is the breaking away of rocks the types of weathering are mechanical and chemical
Anonymous Profile
Anonymous answered
They is chemical weathering-acid rain,freeze thaw,plants and heat exhaustion as well as much much more
Anonymous Profile
Anonymous answered
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Anonymous Profile
Anonymous answered
Chemical, consisting of freeze thaw weathering and onion skin weathering (I think).

Biological which is basically plants, animals and insects breaking down rocks.

And Physical or mechanical weathering involves the breakdown of rocks and soils through direct contact with atmospheric conditions, such as heat, water, ice and pressure. The second classification

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Anonymous