WeatheringWeathering GPH 111. Weathering Game Plan: WEATHERING What is WEATHERING and how does it fit within gemorphology? TYPES Major TYPES of weathering.
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WeatheringWeatheringWeatheringWeathering
GPH 111GPH 111
Weathering Game Plan:Weathering Game Plan:Weathering Game Plan:Weathering Game Plan:
What is WEATHERINGWEATHERING and how does it fit within gemorphology?
Major TYPESTYPES of weathering How does climate affect
weathering?
What is WEATHERINGWEATHERING and how does it fit within gemorphology?
Major TYPESTYPES of weathering How does climate affect
weathering?
What is Weathering?What is Weathering?What is Weathering?What is Weathering?
The collective processes that lead to the The collective processes that lead to the surface and sub-surface disintegration and surface and sub-surface disintegration and dissolution of rock. The major types include dissolution of rock. The major types include physical, chemical, and biological weathering.physical, chemical, and biological weathering.
The collective processes that lead to the The collective processes that lead to the surface and sub-surface disintegration and surface and sub-surface disintegration and dissolution of rock. The major types include dissolution of rock. The major types include physical, chemical, and biological weathering.physical, chemical, and biological weathering.
Weathering within GeomorphologyWeathering within GeomorphologyWeathering within GeomorphologyWeathering within Geomorphology
Sierra Estrella MountainsSierra Estrella Mountainsand the Gila Riverand the Gila River
Weathering ProcessesWeathering ProcessesWeathering ProcessesWeathering ProcessesSalt WeatheringSheetingSolutionFrost ActionOxidationHydrationHydrolysisThermal Expansion
Salt WeatheringSheetingSolutionFrost ActionOxidationHydrationHydrolysisThermal Expansion
Weathering Weathering ProcessesProcesses
Weathering Weathering ProcessesProcesses ChemicalChemical
_________ - Minerals chemically combine with water
_________ - Mineral breakdown through contact with Oxygen (Rust)
_________ - Mineral absorption of water causes swelling and stress
_________ - Mineral dissolution by water
Examples: Spheroidal Weathering, Karst Topography, Gnamma Pits
PhysicalPhysical_________ - Water freezing induced expansion
_________ - Mineral crystal growth induced expansion
_________ - Pressure released expansion through unloading
_________ - Rapid heating from lightning and fires
Examples - Exfoliation Domes and talus slopes
ExtraExtra
ChemicalChemical_________ - Minerals chemically combine with water
_________ - Mineral breakdown through contact with Oxygen (Rust)
_________ - Mineral absorption of water causes swelling and stress
_________ - Mineral dissolution by water
Examples: Spheroidal Weathering, Karst Topography, Gnamma Pits
PhysicalPhysical_________ - Water freezing induced expansion
_________ - Mineral crystal growth induced expansion
_________ - Pressure released expansion through unloading
_________ - Rapid heating from lightning and fires
Examples - Exfoliation Domes and talus slopes
ExtraExtra
Weathering Weathering ProcessesProcesses
Weathering Weathering ProcessesProcesses ChemicalChemical
Hydrolysis - Minerals chemically combine with water
Oxidation - Mineral breakdown through contact with Oxygen (Rust)
Hydration - Mineral absorption of water causes swelling and stress
Solution - Mineral dissolution by water into their ionic form
Examples: Spheroidal Weathering, Karst Topography, Gnamma Pits
PhysicalPhysicalFrost Action - Water freezing induced expansion
Crystallization - Mineral crystal growth induced expansion
Sheeting - Pressure released expansion through unloading
Thermal Expansion - Rapid heating from lightning and fires
Examples - Exfoliation Domes and talus slopes
ExtraExtra
ChemicalChemicalHydrolysis - Minerals chemically combine with water
Oxidation - Mineral breakdown through contact with Oxygen (Rust)
Hydration - Mineral absorption of water causes swelling and stress
Solution - Mineral dissolution by water into their ionic form
Examples: Spheroidal Weathering, Karst Topography, Gnamma Pits
PhysicalPhysicalFrost Action - Water freezing induced expansion
Crystallization - Mineral crystal growth induced expansion
Sheeting - Pressure released expansion through unloading
Thermal Expansion - Rapid heating from lightning and fires
Examples - Exfoliation Domes and talus slopes
ExtraExtra
Chemical Weathering Chemical Weathering ProcessesProcesses
Chemical Weathering Chemical Weathering ProcessesProcesses
Weathering ProcessesWeathering ProcessesHydrolysis OxidationHydrationSolution
Associated Weathering LandformsAssociated Weathering LandformsSpheriodal WeatheringKarst TopographyGnama Pits
Weathering ProcessesWeathering ProcessesHydrolysis OxidationHydrationSolution
Associated Weathering LandformsAssociated Weathering LandformsSpheriodal WeatheringKarst TopographyGnama Pits
Chemical Chemical WeatheringWeatheringChemical Chemical
WeatheringWeathering Hydrolysis Hydrolysis
Feldspar (K, Al, Si, O) + carbonic acid and water residual clays (Kaolinite) + dissolved minerals + Si
Minerals chemically combine with water, substituting silica for hydrogen and weathering individual mineral grains
This process removes CO2 from the atmosphere, counteracting global warming
Chemical WeatheringChemical WeatheringChemical WeatheringChemical Weathering Oxidation Oxidation
Iron bearing minerals (like biotite) combine with Oxygen to generate oxides and softer clay minerals.
Rusted railway car; that has undergone oxidation
Chemical WeatheringChemical WeatheringChemical WeatheringChemical Weathering Oxidation Oxidation
The Wave, Southern UtahWupatki, Northern Arizona
Chemical Chemical WeatheringWeatheringChemical Chemical
WeatheringWeathering Hydration - Clay
minerals absorb moisture along their cleavage planes, dramatically increasing in volume.
Hydration - Clay minerals absorb moisture along their cleavage planes, dramatically increasing in volume.
Chemical Chemical WeatheringWeatheringChemical Chemical
WeatheringWeathering Solution Solution
Minerals can dissolve into ions with water, like dissolving sugar in coffee
Water is the universal solvent, capable of dissolving at least 57 of the natural elements
Weathering Weathering LandformLandform
Weathering Weathering LandformLandform
Karst TopographyKarst Topography - generated through solution mostly into limestone bedrock
Karst TopographyKarst Topography - generated through solution mostly into limestone bedrock
Weathering Weathering LandformLandform
Weathering Weathering LandformLandform
Caves and Caverns
SinkholesSinkholesSinkholesSinkholes Karst
Topography Can Be Associated with Extensive Damage (Sink Holes)
Karst Topography Can Be Associated with Extensive Damage (Sink Holes)
Weathering Weathering LandformLandform
Weathering Weathering LandformLandform Spheroidal Weathering - Chemical
weathering attacks all surface areas, rounding sharp edges into spheroid shapes.
Spheroidal Weathering - Chemical weathering attacks all surface areas, rounding sharp edges into spheroid shapes.
Weathering Weathering LandformLandform
Weathering Weathering LandformLandform
Weathering Weathering LandformLandform
Weathering Weathering LandformLandform Gnamma Pits - How do you think these guys
form, what chemical weathering processes could affect their growth?
Gnamma Pits - How do you think these guys form, what chemical weathering processes could affect their growth?
Physical Weathering Physical Weathering ProcessesProcesses
Physical Weathering Physical Weathering ProcessesProcesses
Weathering ProcessesWeathering ProcessesFrost ActionSalt WeatheringSheetingThermal Expansion
Associated Weathering LandformsAssociated Weathering LandformsTalus SlopesExfoliation Domes
Weathering ProcessesWeathering ProcessesFrost ActionSalt WeatheringSheetingThermal Expansion
Associated Weathering LandformsAssociated Weathering LandformsTalus SlopesExfoliation Domes
Physical Physical WeatheringWeathering
Physical Physical WeatheringWeathering Frost Action - Where water seeps into
rock weaknesses during day, then freezes and expands at night--breaking the rock apart.
Frost Action - Where water seeps into rock weaknesses during day, then freezes and expands at night--breaking the rock apart.
Physical Physical WeatheringWeathering
Physical Physical WeatheringWeathering
Weathering Weathering LandformLandform
Weathering Weathering LandformLandform Chemical weathering rounds rocks--physical
weathering generates angular rocks. Talus Slope - A pile of angular rock fragments
Chemical weathering rounds rocks--physical weathering generates angular rocks.
Talus Slope - A pile of angular rock fragments
Physical WeatheringPhysical WeatheringPhysical WeatheringPhysical Weathering Crystallizatio
n - Where mineral rich water seeps into rock, evaporates, and allows the dissolved solids to crystallize, breaking the rock apart.
Crystallization - Where mineral rich water seeps into rock, evaporates, and allows the dissolved solids to crystallize, breaking the rock apart.
Physical Physical WeatheringWeathering
Physical Physical WeatheringWeathering SheetingSheeting - Buried rocks are under
tremendous pressure and once uncovered, pressure drop sharply and the rocks rebound.
SheetingSheeting - Buried rocks are under tremendous pressure and once uncovered, pressure drop sharply and the rocks rebound.
GraniteSandstone
Only non-water Only non-water related processrelated process
Weathering Weathering LandformLandform
Weathering Weathering LandformLandform
Exfoliation Exfoliation DomeDome - Develop after extensive unloading and sheeting.
Exfoliation Exfoliation DomeDome - Develop after extensive unloading and sheeting.
Enchanted Rock, Texas
Half Dome, CA
Physical Physical WeatheringWeathering
Physical Physical WeatheringWeathering Thermal ExpansionThermal Expansion -
Rocks dramatically heated by forest firesforest fires can explode when water absorbed in the rock flashes to steam.
Thermal ExpansionThermal Expansion - Rocks dramatically heated by forest firesforest fires can explode when water absorbed in the rock flashes to steam.
Physical Physical WeatheringWeathering
Physical Physical WeatheringWeathering Thermal Expansion - Rocks dramatically heated
by lightning lightning can explode when water absorbed in the rock flashes to steam.
Thermal Expansion - Rocks dramatically heated by lightning lightning can explode when water absorbed in the rock flashes to steam.
Physical Physical WeatheringWeathering
Physical Physical WeatheringWeathering Thermal Expansion - Different rates of
mineral expansion and water absorption throughout numerous day and night cycles.
Thermal Expansion - Different rates of mineral expansion and water absorption throughout numerous day and night cycles.
Extra WeatheringExtra WeatheringExtra WeatheringExtra Weathering Root Growth - Root growth extends into rock
fractures, expand and bust the rock apart Root Growth - Root growth extends into rock
fractures, expand and bust the rock apart
Where do you think the Where do you think the different weathering different weathering
processes dominate on the processes dominate on the planet?planet?
Where do you think the Where do you think the different weathering different weathering
processes dominate on the processes dominate on the planet?planet?
In the Amazon (Tropical Rainforest) Serengeti of Africa (Savanna) Death Valley (Arid) Minnesota (Humid Continental) The Sierras (High Alpine) Alabama (Humid subtropical)
In the Amazon (Tropical Rainforest) Serengeti of Africa (Savanna) Death Valley (Arid) Minnesota (Humid Continental) The Sierras (High Alpine) Alabama (Humid subtropical)
Make a list for each one!!!Make a list for each one!!!
Importance of Surface Importance of Surface AreaArea
Importance of Surface Importance of Surface AreaArea
What will weather quicker, one hugehuge boulder or a huge boulder broken down into a bunch of smallersmaller boulders? Why?
What will weather quicker, one hugehuge boulder or a huge boulder broken down into a bunch of smallersmaller boulders? Why?
What does Weathering DO?What does Weathering DO?What does Weathering DO?What does Weathering DO?
The in situ disintegration of rock supplied by tectonic (and isostatic) rock input!
The in situ disintegration of rock supplied by tectonic (and isostatic) rock input!
Things to Know:Things to Know:Things to Know:Things to Know:What is weatheringweathering Chemical processes round edges,
physical processes generate anglesTypes of chemicalchemical weathering and
associated landformsTypes of physicalphysical weathering and
associated landforms Importance of SURFACE AREASURFACE AREA
What is weatheringweathering Chemical processes round edges,
physical processes generate anglesTypes of chemicalchemical weathering and
associated landformsTypes of physicalphysical weathering and
associated landforms Importance of SURFACE AREASURFACE AREA
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