EQ1: To What Extent do Rates of Coastal Recession Depend on Lithology and Geology? Lesson Objectives Evaluate the importance of differential erosion in determining the shape and formation of our coasts. Research and share a variety of case study coastlines. Examine how geology can affect the rates of coastal erosion (recession) Skills Reading and summarising Geofile article on the Holderness Coast Use of Environment Agency Coastal erosion SMP Mapping and erosion rates Use of OS maps and satellite images to identify coastal morphology Use of sketches from photos and maps of coastal landscapes Key Words: Glacial till Unconsolidated material Cliff profiles Recession rates SMP –Shoreline Management Plan

next to clay, but soft next to granite! EQ1: To What Extent do Rates of Coastal Recession Depend on Lithology and Geology? Starter Activity What makes some coasts more prone to erosion that others? What factors dictate the shape or morphology of the coast? Concordant/ Discordant coastline Geology (I, S, M) Mass movement Geology (I, S, M) Fetch Human activity Folds Faults jointing Climate Erosion rates Coastal Features (E, T, D) Morphology weathering Bedding Planes/joints Permeability Hard or soft Wave refraction Concordant/ Discordant coastline Erosion rates Cliff profiles Haff/Dalmatian Sub-aerial (marine processes) Remember geology is relative: limestone is hard next to clay, but soft next to granite!

Case Study 1: The Holderness Coast Geofile 141 You have 30minutes to complete the task below: Task 1: Read this article, focus on the geology, coastal morphology, and factors that affect the rates of erosion along this stretch of coastline. Task 2: Produce an annotated sketch map on one side of A4 to summarise the key points you have read/highlighted in the geofile article. Case Study 2: Your choice of coastline Task 3: Once you have chosen your coastal area/town (there are some ideas on the next slide) use the internet to research the geology of the area, the coastal morphology and named coastal features. Task 4: Add detailed annotation to explain the morphology and landscape using key words from your previous notes.

Examples of coastal areas to choose from St Bees, Cumbria (Sandstone and Glacial till) Robin Hoods Bay, N Yorkshire (Sedimentary mudstones) St Ives, Cornwall (Basalt) Holderness Coast (Glacial till and Chalk) Examples of coastal areas to choose from

Skill: Drawing Sketch Maps Rules In pencil draw a frame (use map grid lines/references to guide you to the approximate size of the frame). 2. Draw in the main coastline, trying to locate and form the lines as accurately as you can. 3. Add the features (human/physical) that you have been asked to include (not anything else!) e.g geology 4. Annotate with Photo sketches to highlight coastal features 5. Add clear labels/annotated explanations scale, key, place names, title.

Erosion rates along the UK coast SMP Shoreline Management Plan For your chosen coastline area /town, type into Google Environment Agency Coastal Erosion. Click on this option/web link: Type in the location of the coastal area/town Make sure the map scale is increased to a scale of 1:20,00 so the key can easily be seen. Click on the coloured lines near the coast to take you to details about erosion rates predicted over 20, 50 & 100 yrs. 6. Complete the same for Mappleton (Holderness Coast) How doe the erosion rates compare between the two locations?

Progress Check To What Extent do Rates of Coastal Recession Depend on Lithology and Geology? Task: In pairs – discuss the answer to this question, referring to your case studies of Holderness and your chosen area of coast. Write a summary conclusion or construct a mind map of your understanding. Have the Lesson Objectives been met? Evaluate the importance of differential erosion in determining the shape and formation of our coasts. Research and share a variety of case study coastlines. Examine how geology can affect the rates of coastal erosion (recession)