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Weathering is the alteration of rocks to more stable material from their exposure to the agents of air, water, and organic fluids. No rock is stable or immune to weathering. Many pathways and agents are involved ... Salt crystals might form in pores of rocks from the evaporation of sea mist and cause the pores to break apart.
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www.waterencyclopedia.com/Tw-Z/Weathering-of-Rocks.html
www.waterencyclopedia.com/Tw-Z/Weathering-of-Rocks.html
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6. List and discuss the factors that influence the type and rate of rock weathering. ... Further complications within the rock cycle include (1) weathering of sedimentary and metamorphic rocks (in addition to igneous rocks), and (2) metamorphism of igneous rocks and repeated metamorphism of metamorphic rocks.
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facstaff.gpc.edu/~pgore/geology/geo101/weather.htm
facstaff.gpc.edu/~pgore/geology/geo101/weather.htm
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Chemical Weathering ... Organic weathering: Organic weathering involves organic acids produced by plant organisms. The acids attack rock-forming minerals.
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www.innvista.com/science/earth/geology/weath.htm
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Weathering and erosion is the breakdown of rock due to exposure to the atmosphere and due to the differences in conditions from where rock had formed and surfaced. An example is granite. It is formed deep and in it is hornblende, biotite, quartz, and feldspar. ... Humans cause much erosion. Abrasion is where...
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www.scarborough.k12.me.us/high/projects/geoscience4/sbe...
www.scarborough.k12.me.us/high/projects/geoscience4/sbergg/erosion.htm
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Climate- High amounts of water and higher temperatures generally cause chemical reactions to run faster. Thus warm humid climates generally have more highly weathered rock, and rates of weathering are higher than in cold dry climates.
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www.tulane.edu/~sanelson/geol111/weathering.htm
www.tulane.edu/~sanelson/geol111/weathering.htm
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Mechanical weathering will expose material that is new to an environment making it more susceptible to chemical weathering. And chemical weathering can cause some materials to become weak so that they will break apart easier with physical process exerted on them. ... There are even styles in the breakup of the rock.
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www.msu.edu/~roycenic/geo.html
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Mechanical weathering causes the parent rock to break into smaller fragments without changing the chemical makeup of the rock. Chemical weathering is the process of changing the makeup of the parent rock through chemical reactions.
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www.usoe.k12.ut.us/curr/science/core/plans/int/rocks.ht...
www.usoe.k12.ut.us/curr/science/core/plans/int/rocks.html
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Pressure release of rock can cause physical weathering due to unloading. The majority of igneous rocks were created deep under the Earth's surface at much higher pressures and temperatures. As erosion brings these rock formations to the surface, they become subjected to less and less pressure.
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www.physicalgeography.net/fundamentals/10r.html
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Freeze-thaw weathering occurs when water gets into cracks in rock and then freezes (below 0 °C) in cold weather. Water expands when it freezes and turns to ice, and the expansion can cause the rock to split and fragment.
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www.gcsescience.com/rk8.htm
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