Tuesday, 15 February 2011

Describing Coastal Features

Today, we discussed coastal erosion processes and drew annotated diagrams to define these (elishba and amie, please do this for homework).

We then practiced drawing annotated sketch diagrams.  Remember the following rules for these:

1.  Draw the features in simple outline and name them correctly (eg beach, cliff, arch, stack)

2.  Add details about:
  • rock type - colour, faults and joints, vertical, horizontal or angled strata,
  • slope (gently sloping or steep)
  • vegetation (grass, trees, patchy or full ground cover)
3.  Add annotation to explain factors affecting these features, including:
  • Wave action (describe the wave types in the photo)
  • Erosion processes (name them)
  • Cliff top weathering (freeze thaw, chemical weathering, biological weathering etc....)
  • Human activity (footpath erosion, settlement, coastal management)
  • Evidence of tectonic activity
VW

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