PhysG - Chapter 12 Weathering and Mass Wasting Last time...

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Chapter 12 Weathering and Mass Wasting Last time Earth’s crust, its mineral composition, lithospheric plates, a few examples of landforms. Today: Weathering: how rocks are softened and how they break up. Weathering : all the processes that physically disrupt or chemically decompose a rock at or exposed near the Earth’s surface Two types of weathering: 1. Physical weathering 2. Chemical weathering Weathering produces regolith Physical weathering : breakup or fracture of massive rock (bedrock) by physical forces at or near the Earth’s surface Regolith : layer of mineral particles that lies above bedrock. Is a layer of loose material covering solid rock producing distinctive landforms. Nature of Exogenic Processes Recall: Exogenic process: landforming process originating at or very near the Earth’s surface Weathering Breakdown of rock materials at and near Earth’s surface become susceptible to other exogenic processes: Eroded Transported Deposited Mass wasting:
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PhysG - Chapter 12 Weathering and Mass Wasting Last time...

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