high energy interrelationship of landforms Flashcards
shore platforms and cliffs
when cliffs are eroded - retreat occurs - shore platform - due to tidal range - seasick bay - 400m long - 500m wide
horizontal bedded strata
how is interrelationship showED
as for a shore platform to be formed a cliff must be eroded
different rock types will alter speed of retreat
Headlands and CASS
headlands such as flambourough head (chalk) - haves waves hitting the headland - have large energy due to 1500km fetch
wave refraction
waves are refracted due to friction - therefore exert more of their energy on the headland - leads to CASS formation - green stacks pinnacle
what is needed for headlands and bays to form
must be a variation in geology - discordant coastline - robin hoods bay (shale formed in jurassic period) - ravansgvr (sandstone - porous water enters cracks)
differences in retreat
wouldn’t form if shale of robin hoods bay didn’t retreat at 0.8m a year - while ravansgvr retreats at 0.1m a year