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Dorset Coast - Field Trip

VIEWS: 3 PAGES: 35

									                       The Dorset Coast
                       (and a little bit of Hampshire!)




                                ~ a virtual field trip ~


I took this picture!
Where it is located
   Day 1– The journey to Dorset!




Day 2 – Lyme Regis to Ringstead Bay
Groynes




            An aerial photo of Lyme
            Regis Bay, showing ‘The
           Cobb’ (Harbour) and where
          the River Lim meets the sea
Lyme Regis ~ Charmouth ~ Golden Cap




                                 Golden Cap
 The coast is unstable because there are numerous situations where porous
strata, principally the Chalk and Upper Greensand, lie over impermeable clays.


                                                 Black Ven between Lyme
                                                   Regis and Charmouth.
                                                   Upper Greensand lies
                                                 over Lower Jurassic clays.
                                                    The largest coastal
                                                  mudflow in Europe took
                                                 place here in the winter of
                                                          1958/9
        The cliff top at Black Ven
How Landslides occur
Chesil Beach
                                       Isle of
                                      Portland




                                   The Fleet       West Bay (west)

       The gradient of the beach                 Pebbles are ’sorted!’
          can get very steep                       Portland (east)
The Isle of Portland




                         When the island was uplifted, a series of
                       massive fractures developed in the limestone.
   Weymouth




Weymouth is a traditional seaside resort. It
   is protected by the Isle of Portland.
 Portland Harbour (South of Weymouth)
White Nothe Headland from Ringstead Bay
  Day 3 – Ringstead Bay to St. Alban’s head




Durdle Door ~ Lulworth Cove ~ Stair Hole ~ Warbarrow Bay ~
      Tynham ~ Broad Bench ~ Kimmeridge ~ Winspit
Durdle Door ~ A Limestone Arch




    Eventually the arch
       will collapse to
     leave a sea stack
     Lulworth Cove




  Chalk Hills stop the
   cove eroding any
     further inland

   Soft sand and clays




Limestone Headlands
               Stair Hole




                             Small arch is only
                            gap in the limestone.
  Marine processes
eroding further inland
The formation of Lulworth Cove, Stair Hole and the future
                    Worbarrow Bay




Tyneham from Gadd Cliff             Broad Bench
  (Note the land use)
Kimmeridge Bay – A wave cut platform
                                               St. Alban’s Head
                            Winspit (behind)




Chapmans Pool




                Waves shape the coastline.
         Winspit
Day 4 – St. Albans Head to Sandbanks
   Dancing Ledge
    (+ tidal pool!)            Sandbanks
                                Studland



                                        Old Harry
                      Swanage Bay
                                       Peveril Point

Looking out to see
 from Anvil Point

                                    Durlston Head




                      Anvil Point
Swanage




    Swanage Bay
Old Harry Rocks – A stack




                                       Stack




              Collapsed
                                       Undercutting
                                       means stack
                                       will collapse

                            New cave
                             forming
Studland – Sand Dune System
                                                  3 Major dune ridges




                                                            Little Sea




                         Fieldwork (transects!)
Development of Studland – Blown Sands




                                        Little Sea
                        View over dune slack
                        with further vegetation
Younger dunes with            succession
  Marram Grass




    Actual fieldwork!             Hmmmmmm!
Day 5 – Sandbanks to Barton on Sea and the Isle of White
Bournemouth




              Sandbanks


                        Bournemouth

               Bournemouth
                   Pier




              Groynes
                      Christchurch
                        Harbour               Spit
Hengistbury Head


                                            Groynes




                                     Long Groyne

                   Sediment Build
                        Up
  Hengistbury Head


              Unstable Cliffs
                                          Gullies




                                Groynes
Salt Marsh



                                                    Erosion
      House!




Barton on Sea
 Landslides


                Landslip
Barton on Sea




         Christchurch Bay


    Evidence of lanslides
                            Land Use
                          River Medina ~ A Ria
 West             East        Isle of Wight
Cowes            Cowes




           River Medina




  To Newport
      That’s it!




Day 6 - Back to School

								
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