Coasts

• Characteristics of a Discordant coast:

  • strata is perpendicular to the coast
  • tends to form headlands and bays due to different rates of erosion
  • less resistant rocks erode faster to form bays
  • more resistant rocks erode more slowly and are left protruding as headlands
  • stacks and stumps are a product of more resistant rock
• Characteristics of a concordant coast:

  • strata is parallel to the coast
  • headlands and bays aren't really present unless a fracture is found in the rock
  • no more or less resistant rock
  • no stacks or stumps
• Headlands are eroded more than bays due to wave refraction

  • waves bend around the object
  • smooths the coastline over time