NS3310-Physical Science Studies

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NS3310-Physical Science Studies

• Weathering and Erosion

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TopoBingo ?

• You will each get a map.
• Each map has information about how to read it,
  and symbols that tell you where certain features
  are.
• As I call out each feature, look for that symbol
  on your map.
• The first team to get 5, gets Bingo ?

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Agents of Weathering and Erosion

• Water
• Flooding
• Dissolution
• Wind
• Scouring
• Aeolian transport
• Gravity
• Slides, Slumps and Creep
• Ice (Glaciers)
• Frost Wedging
• Scouring

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Rivers and Streams

• Watershed
• Climate
• Terrain
• Rainfall
• Bedrock
• Permeability
• Mineralogy
• Faults

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Water Flows Downhill!

• Life Cycle of a Meandering River
• Degradational Stage
• Tributaries
• River Channel
• Balanced Stage
• Point Bars
• Levees
• Flood Plains
• Aggradational Stage
• Distributaries
• Deltas
• Terminal Stage
• Stream Piracy

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Drainage Patterns

• Dendritic
• Rectangular
• Tellis
• Raidal

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Erosional Features

• Meanders
• Oxbow Lakes
• Cut Banks
• Terraces
• Transgressive Sequences
• Regressive Sequences

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Depositional Features

• Point Bars
• Levees
• Flood Plains
• Deltas
• Environments of Deposition

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Wind

• Mechanisms of Sand Transport
• Saltation
• Aeolian transport
• Sand Drifts
• Sand Dunes
• Wind Speed
• Wind Direction
• Variability

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Wind is the Dominant Factor in Arid Regions

• Depositional Features
• Alluvial Fans
• Bajadas
• Playa Lakes
• Erosional Features
• Plateaus
• Mesas
• Buttes

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Glaciers

• Alpine Glaciers
• Piedmont Glaciers
• Continental Glaciers

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Alpine Glaciers

• Hanging Valleys
• Cirques
• Aretes
• Horns
• Moraines

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Continental Glaciers

• Moraines
• Lateral
• Terminal
• Outwash Plain
• Drumlins
• Eskers
• Kettle Lakes

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Glacial Cycles

• Why Glaciers
• Land at the Poles
• Global Temperature
• Glacial Cycles
• Glacial Maximum
• Glacial Minimum
• Interglacial Periods

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Gravity

• Slides
• Rock
• Mud
• Avalanche
• Slumps
• Creep

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Key Concepts

• Erosion is the movement of earth materials
  created by chemical and physical weathering
• Landscape features are created by these physical
  forces acting on the earths surface over time
  (tectonism, volcanism and weathering and erosion)
• Weathering and Erosion change the earth
• from the top down
• Water, Gravity, Wind and Ice are all Agents
• of Weathering and Erosion
• The earths crust records these changes
• in Strata
• Studying the earths strata tells us about the
• earths past