EQ1 Summary
- Created by: revisionmadi
- Created on: 09-10-19 16:25
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- EQ1: Why are coastal landscapes different and processes cause these differences?
- Littoral zone - wider coastal zone divided into sub zones.
- Backshore - area between high water mark and landward limit of marine activity.
- Foreshore - area lying between high water mark and low water mark (optimum for marine activity)
- Nearshore - low water mark and area where waves cease to have an influence.
- Offshore - area beyond the point where waves cease to have an impact on the seabed and in which activity is limited to the deposition of sediment.
- Definition of coastal landscape
- Define coastal zone
- Factors affecting coastal zones
- Biotic factors
- Geomorphic factors
- mass movement
- Tectonic factors/historical
- E.g. Coastal uplift
- Climate
- Marine Factors
- waves
- Human activity
- Geology
- Classification of coasts
- Changed over time due to sea level change and erosion and deposition
- Cliff types
- Rocky: varying height and resistance, distinct boundaries and high energy
- Coastal plain: low relief, sand dunes and salt marshes present and low energy environments
- Geological structures
- e.g. faults and folds
- Macro scale - coastline/headland
- Micro - cave
- Know differences between sedimentary, igneous and metamorphic
- Definitions of tees-exe line, lithology, strata, bedding planes, joints, folds, faults and a dip.
- Types of Coastlines
- Discordant
- Rock is perpendicular to sea
- Headlands and bays formed
- differential rates of erosion
- Concordant
- Forms coves
- rock is parallel to sea
- same band of rock along a stretch of coastline hence same erosional rates
- Dalmation
- long offshore islands and coastal inlets parallel to coastline
- Haff
- Lagoons enclosed by long spits of sand parallel to the low lying coast
- Discordant
- CASE STUDY: The Gower Peninsula
- Cliff Profiles (see complex cliff diagram)
- Straight/ concave
- Curved/ convex
- Coastal recession and vegetation succession
- learn formationSand dunes, salt marshes and
- Littoral zone - wider coastal zone divided into sub zones.
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