WeatheringWeathering

What type of weathering?What type of weathering?

The Wind -- Mechanical The Wind -- Mechanical Weathering in Action!Weathering in Action!

And this?And this?

Biological WeatheringBiological Weathering

What type of weathering are What type of weathering are these people stood on?these people stood on?

Frost Shattering - PhysicalFrost Shattering - Physical

A Little Trickier?A Little Trickier?

HydrolysisHydrolysis

Nice ViewNice View

SheetingSheeting

This is hardThis is hard

Spheroidal Weathering.Spheroidal Weathering.

And Finally?And Finally?

Salt WeatheringSalt Weathering

Physical WeatheringPhysical Weathering

AbrasionAbrasion CrystallizationCrystallization Wetting and DryingWetting and Drying Pressure ReleasePressure Release Insolation Or thermal weatheringInsolation Or thermal weathering

Chemical WeatheringChemical Weathering

CarbonationCarbonation HydrolysisHydrolysis HydrationHydration OxidationOxidation

BiologicalBiological

Breakdown of rocks with the Breakdown of rocks with the chemical or physical actions of a chemical or physical actions of a living organismliving organism

ChelationChelation Organisms influence moisture Organisms influence moisture

regimesregimes Organisms influence soil Ph values.Organisms influence soil Ph values.

Peltier Weathering GraphPeltier Weathering Graph

Louis PeltierLouis Peltier

American physicist and climatologistAmerican physicist and climatologist 1950 study 1950 study “The Geographic Cycle in

Periglacial Regions as it is Related to Climatic Geomorphology”

His graph attempts to predict the type His graph attempts to predict the type and rate of weathering at any given and rate of weathering at any given place on Earthplace on Earth

Doing so from its mean annual Doing so from its mean annual temperature and mean annual rainfall.temperature and mean annual rainfall.

QuestionsQuestions

Waugh Page 38 Waugh Page 38 Attempt activities 1 – 5.Attempt activities 1 – 5.