During the Devensian Glacial eustatic changes lowered sea levels by 120 m. At the start of the Holocene Interglacial (10,000 years BP) led to a rapid 100 m eustatic rise in global sea levels, as 3,000 years of ice sheets and glaciers shrank. The Earth has approximately 620,000 kilometres (390,000mi) of coastlines and they are not just a barrier between land and water; they are also important natural ecosystems. 5 July 2020 / in AQA GCSE Geography , Coasts , Landforms of Coastal Erosion / by Anthony Bennett A discordant coastline is where the geology alternates between strata (bands) of soft and hard rock. Wrong! This is a Geography revision website for the Edexcel A-Level from 2016 (so the new syllabus), and will contain my class notes, own research and detail from revision guides and textbooks. . It has the unenviable reputation as the number one place in Europe for coastal erosion, and in a stormy year waves from the North sea can remove between 7 and 10m of coastline. Concordant or conformable, when referring to plutonic bodies, indicates that the intruding magma of sills and laccoliths lies parallel to rather than cutting across country strata, as do discordant structures such as veins, dikes, bysmoliths, and batholiths. The water. Geology is the study of the types of rocks that make up the Earth's crust. Taking the low-water line along the coast (or, the baseline), UNCLAS put forth the following: Special exceptions apply to areas like straits, where ships can't help but pass through territorial waters. The concordant coastline runs from west to east along the south coast. Concordant coastlines tend to have fewer bays . The coast, also known as the coastline or seashore, is defined as the area where land meets the ocean, or as a line that forms the boundary between the land and the ocean or a lake. Adapted from BBC. Can the risks of volcanic eruptions be reduced? Economic activities in glaciated upland areas, Glaciation Photo gallery Goat Fell, Isle of Arran. Concordant coasts are also known as dalmatian coasts, after the Dalmatian region of Croatia, or Pacific coasts, after the coastline of Chile in South America. Touch device users . (adsbygoogle = window.adsbygoogle || []).push({}); If you've found the resources on this page useful please consider making a secure donation via PayPal to support the development of the site. Emergent coastlines have emerged from the water; submergent coastlines have submerged below the water. When the auto-complete results are available, use the up and down arrows to review and Enter to select. Today. docx, 24.88 KB. Be perfectly prepared on time with an individual plan. Where are Temperate Deciduous Woodlands Located? It has a variety of other micro-features and a unique geology. Create flashcards in notes completely automatically. Or built a sand castle next to the waves? full verbatim. Discordant These are where rock strata or structures are aligned at an angle to the coastline. If the direction of classifications is the same, the pairs are concordant. Use the resources provided to write notes that Wave Refraction and Coastal Defences. Secondly, erosion of concordant coastlines results in the formation of coves while the erosion of discordant coastlines results in headlands and bays. The differing resistance to erosion leads to the formation of headlands and bays. A chalk cliff face is at the back of the cove. Discordant coasts have a crenellated pattern of projecting headlands and indented bays. CAVES, ARCHES, STACKS AND STUMPS These are found on headlands where wave refraction means that erosion takes place on both sides of the headland. During the Devensian Glacial eustatic changes lowered sea levels by 120 m. At the start of the Holocene Interglacial (10,000 years BP) led to a rapid 100 m eustatic rise in global sea levels, as 3,000 years of ice sheets and glaciers shrank. Joints,Dips and Faults in terms of rocks. Either way, there is now a (bit of) coastline that is no longer submerged under water. Lulworth cove is a perfect horseshoe bay found on the south coast of England in the county of Dorset, on the Jurassic coastline. 3. Discordant. The image below (figure 2) is taken at Durlston Head, which shows the bay (yellow) and the headland (red). it gained popularity because it preserved beach resources and avoided the negative effects of hard structures.Instead, nourishment creates a "soft" (i.e., non-permanent) structure by creating a larger sand reservoir, pushing the shoreline seaward. A case study of the coastal recession at the Nile Delta for Edexcel A Level Geography. Waves interact with land through three major marine processes: erosion, transportation, and deposition. Along the coastline of Dorset, there are concordant and discordant coastlines. Coastlines where the geology alternates between bands of hard and soft rock which are perpendicular to the shore are called discordant coastlines. This belongs to: _____. Paisajes. Sign up to highlight and take notes. Discordant coastline - Source www.bbc.co.uk As soft rock, such as glacial till, is more susceptible to erosion it erodes more rapidly than more resistant rock such as chalk. What are the air masses that affect the UK? They are also called spilling or surging waves. That is, if both the row and column index move in the same direction - both increase or both decrease, then the pair is concordant. Paymaya Annual Report, The Isle of Purbeck, in Dorset, is an example of where a concordant and discordant coastline exist very close to one another. Portland limestone erodes very slowly, retreating landwards by marine undercutting and collapse to form a straight W-E coastline. How does geology affect the formation of river landforms? - Headlands form along discordant coastlines in which bands of soft and hard rock outcrop at right angles to the coastline. Landscapes. Hilbre Island (Cheshire) is an example of a possible fieldwork location. A combination of geological structure and sea level riseproduces the morphology of landforms aligned parallel to the coastline. As the wave breaks, it carries material up the beach in its swash. Where once there was a simple river with well-defined banks, now there is a sprawling river that has submerged most of the terrain around it. The outer layers of the coastline, those directly on the waterline, are Portland and Purbeck limestone, and they have been eroded away over many years. discordant coastlines. Coastlines are constantly changing, with sea levels rising or falling, and it is no different with submergent coastlines. 2. The geology of the Isle is complex. The differing resistance to erosion leads to the formation of headlands and bays. It has a variety of other micro-features and a unique geology. The high degree of indentation of Bantry Bay is not solely influenced by the relative resistance of rock types, but also the orientation of strata SW-NE means that they directly face high energy Atlantic waves driven by the prevailing SW wind. Set individual study goals and earn points reaching them. It remains England's only natural World Heritage Site. Seven cliff-top homes are badly damaged as the largest tidal surge in 60 years batters the east coast of England. Excluding the shoreline of Poole Harbour, the Dorset coastline is 142 kilometres (88 mi) long. Share 5.1K views 2 years ago This video explains the difference between a concordant and discordant coastline, including the coastal landforms that occur along each and the geological. It has a variety of other micro-features and a unique geology. Additionally, hotter temperatures enable extreme weather events like hurricanes to occur more frequently. Assessment week 2 (WB 24th February 2020) - End of unit test - Physical landscapes of the UK. (For example the east of the Dorset coast) How Geology affects the coast . Add in the missing words. International migration from Syria to Europe, Japan A country with a high dependent population. Sea forces change coastal landscapes with the wind being the major source of waves. The rock types are typically of . Best study tips and tricks for your exams. PSYCHIC TWINS . Bands of soft rock such as clay and sand are weaker therefore they can be eroded quickly. Concordant coasts are also known as dalmatian coasts, after the Dalmatian region of Croatia, or Pacific coasts, after the coastline of Chile in South America. The coastline determines everything. Fetch length along with the wind speed (or strength) determines the size of waves produced. Great Ocean Road, Australia. dxterity stock symbol / nice houses for sale near amsterdam / nice houses for sale near amsterdam UNCLAS implemented a universal system for maritime boundaries based on baselines, which are measured from the low-water line at the coast. The United Nations uses coastlines to help determine international boundaries at sea. Caves, arches, stacks and stumps Weathering and erosion can create caves, arches, stacks and stumps along a headland. This lesson was designed initially for an interview, and worked really well for a 50 minute lesson duration. GCSE Geography Coastal landscapes in the UK learning resources for adults, children, parents and teachers. Concordant coasts are also known as dalmatian coasts, after the Dalmatian region of Croatia, or Pacific coasts, after the coastline of Chile in South America. Less resistant rocks are eroded more than the resistant . Key Question: What are the different landforms of the Jurassic Coast? The Portland limestone is resistant to erosion; then to the north there is Swanage Bay where the rock type is a softer greensand. Have all your study materials in one place. Geology is the study of the types of rocks that make up the Earth's crust. What feature is left behind as the cliff retreats? As our Earth warms, glaciers melt, causing the sea level to rise. The site is self-funded and your support is really appreciated. The four major types of coastlines are emergent coastlines; submergent coastlines; concordant coastlines; and discordant coastlines. Have you ever gone for a stroll on a beach? Bays and headlands are common features along discordant coastlines. Concordant Coasts . What factors influence the effects and response to tectonic activity? What is a concordant coastline? How has hot desert vegetation adapted to the climate? Spits were formed in river mouths where the river was powerful enough to break through the sand ridge to the sea. Headlands and bays can form on concordant coastlines too, as has happened . Start studying BBC Geography Bitesize: Coastal Processes. These waves are also known as plunging waves. in height. A hard rock type such as granite is resistant to erosion and creates a promontory whilst a softer rock type such as the clays of Bagshot Beds . Identify the physical process that has shaped the pebble (1) Coasts - Grade Booster. 5 July 2020 / in AQA GCSE Geography , Coasts , Landforms of Coastal Erosion / by Anthony Bennett A discordant coastline is where the geology alternates between strata (bands) of soft and hard rock. They are gentle, flat waves with a strong swash and a weak backwash; as a result, constructive waves build beaches. The angle these bands make with the coastline makes it either a concordant or discordant coastline. Fig. The warmer climate that followed melted much of the ice. This quiz focusses in particular on those features which are caused by coastal erosion. Because the soft rock is exposed, it is eroded faster than the hard rock. Discordant. At the mouth of the River Oder near Szczecin, Stettiner Haff formed where sand ridge connected islands, leaving river to emerge through three narrow outlets. BBC Bitesize Geoguessr Google Maps Gapminder . Learn about and revise coastal landforms, whether caused by erosion or deposition, with GCSE Bitesize Geography (OCR). This cove is located near the village of West Lulworth and is one of the best examples of a concordant coastline. Historic records indicate that over 250 m of land were lost between 1600 and 1850.
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