Headlands and bays can form on concordant coastlines too, as has happened . During this time, glaciers and ice sheets were retreating, causing a rise in global sea levels and localised changes in land height. The discordant coastline runs from 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 . Concordant and discordant coasts . Coastlines where the geology alternates between strata (or bands) of hard rock and soft rock are called discordant. Best study tips and tricks for your exams. This is because access to the coast offers the opportunity for harvesting marine resources, especially fish, as well as the ability to conduct international trade via the sea. Worksheets with answers provided that guide students through sequencing each landform with the emphasis on process detail and geology. Portland limestone erodes very slowly, retreating landwards by marine undercutting and collapse to form a straight W-E coastline. How has urbanisation helped Nigeria to develop? There are two special types of submerged coastlines: ria coasts and fjord coasts. Waves are the main reason for coastal change. Concordant coastlines tend to have fewer bays and headlands. Thus, a concordant coastline refers to a coastline that is made up of the same kinds of rocks and arranged parallel to the coast of the sea or ocean. They have low energy and an elliptical orbit. Discordant coastlines are characterised by different bands of rocks running perpendicular to the coast. 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. Aqa. Fjords are created when glaciers cut through valleys and are submerged. Learn about and revise coastal landforms, whether caused by erosion or deposition, with GCSE Bitesize Geography (AQA). Durdle Door - Wikipedia What is the highest point of a wave called? The part of the wave in the deeper water moves forward faster causing the wave to bend. It has a variety of other micro-features and a unique geology. Today. What challenges are associated with the growth of Rio? formed by the erosion of less resistant Wealden Clays. You don't have permission to comment on this page. South Dorset Coast 1. True or False: Ria coastlines and Dalmatian landforms are both associated with submergent coastlines. UK Sediment Cells Source: Scool. Why is there a trend towards agribusiness? How has hot desert vegetation adapted to the climate? . A wave-cut platform is a wide, gently sloping surface found at the cliff's base and extends into the sea. 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. high and low energy coasts, geology and sea level and how these change a coastline | GEOLOGICAL structure : which create concordant and discordant coastlines ( Dalmatian and Haff ). The shape of the coastline (which is dependent on its geology) - on concordant coastlines, rocks are parallel to the wave front and therefore rates of erosion are similar along the coastline. Risks facing the Delta. This is considered sovereign national territory, the same as boundaries on land. What is the role of transnational companies in Nigeria? Coastal Erosion Landforms Quiz - Internet Geography The Jurassic Coast begins at Orcombe . They are more common in winterthan in the summer. A hard rock type is resistant to erosion and creates a promontory whilst a softer rock type is easily eroded creating a bay. Dorset coastline - Coastal landforms - AQA - BBC Bitesize Lulworth Cove is a World Heritage site and part of the Heritage Coastline. What problems are caused by global warming? Contact the owner / RSS feed / This workspace is public, Rivers, Floods and Management (Physical Core), Drive, Dropbox, OneDrive, Gmail, and Slack. It has a variety of other micro-features and a unique geology. Excluding the shoreline of Poole Harbour, the Dorset coastline is 142 kilometres (88 mi) long. The Dorset Coast, located to the south of England on the English Channel, runs from Lymme Regis in the west, past Old Harry Rocks in Purbeck to Highcliffe in the east. weathering. Sea forces change coastal landscapes with the wind being the major source of waves. Geology [ edit] The form of the coastline around Durdle Door is controlled by its geologyboth by the contrasting hardnesses of the rocks, and by the local patterns of faults and folds. About 40% of the global population lives within 100km of a coastline. Originally a band of resistant Portland . (For example the south or the Dorset coast) . The time wind takes to blow, wind speed and the fetch (distance the sea has covered) influence wave sizes. Three complete lessons and a worksheet pack that cover the main erosional coastal landforms. https://commons.wikimedia.org/wiki/File:Lulworth.png. Will you pass the quiz? The difference in rock types between discordant and concordant coastlines means that there are differences in erosion. The image below (figure 2) is taken at Durlston Head, which shows the bay (yellow) and the headland (red). Fig. False! This differential erosion creates headlands and bays along discordant coastlines. - Due to the presence of soft and hard rock, differential erosion occurs, with the soft, less resistant rock (e.g. Human actions and Physical factors affecting the Delta. How far out to territorial waters extend from the coast (or baseline)? Discordant coasts are also known as Atlantic coasts, after the Cork coastline in the Republic of Ireland. These processes are happening constantly and usually work in conjunction to produce coastal features. - Internet Geography What is a concordant coastline? 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. Lulworth Cove has occurred on a concordant coastline. Our geography videos are developed with links to various specifications including Geography GCSE, Geography IGCSE, Geography AS-level, Geography A-level, Geography IA-level, Geography National 5, Geography Higher. 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. The form of the coastline around Durdle Door is controlled by its geologyboth by the contrasting hardnesses of the rocks, and by the local patterns of faults and folds. A case study of the coastal recession at the Nile Delta for Edexcel A Level Geography. The outer hard rock is Portland limestone. Headlands and Bays 2. Headlands are formed when the sea attacks a section of coast with alternating horizontal bands of hard and soft rock. 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. Sediment Cells. gcsegeographyatheathfield: Coasts When a stretch of coastline is formed from different types of rock, headlands and bays can form. How reliable are economic indicators of development? If the coastline is concordant then the coastline will have the same type of rock all the way down the coastline, because the ropck is running parallel to the coastline. The time wind takes to blow, wind speed and the fetch (distance the sea has covered) influence wave sizes. Specifically looking at the differences between concordant and discordant coastlines. Hydraulic action, attrition, abrasion, and corrosion. The Jurassic Coast is a world-renowned site where you can find geological (natural) features, and different types of fossils, such as dinosaurs and a fossil forest. 3.1B Transport Technology and Globalisation, 3.2 Political and Economic Decision Making, 7C Economic Development and Environmental Impact, 8B Controlling the Spread of Globlisation, 4A.1B Economic Activity and Social Factors, 4A.1A Changing Function and Characteristics, 4A.6 Evaluating the need for Regeneration, 6C Representation and Need for Regeneration, 10A Measuring the Success of Regeneration, 12A Restructuring and Contested Decisions, 7.5 Superpowers and International Decision Making, 7.6 Superpowers and the Physical Environment, 7.6C Middle-Class Consumption on Emerging Powers, 7.8A Emerging Powers and the Developing World, 8.2 Variations in Health and Life Expectancy, 8.3A The relationship between economic and social development, 8.5A Human Rights Vs Economic Development, 8.8 the Positive and Negative of Development, 2B.2C Geological Structure and Cliff Profiles, 2B.3B Rock Strata and Complex Cliff Profiles, 4C Coastal Landscapes Produced by Erosion, 8C Temporal Variations in Coastal Recession, 9A Local Factors that Increase Coastal Flood Risk, A - Economic and Social Losses from Recession, 2B: 12 Integrated Coastal Zone Management, 1B Importance and Size of Stores and Fluxes, 5.4 Deficits within the Hydrological Cycle, 5.8 Consequences and Risks of Water Insecurity, 8A - Causes and Pattern of Physical and Economic Scarcity, 5.9C Integrated Drainage Basin Management, 6.1C - Geological Processes Releasing Carbon, 6.2 Biological Processes Sequestering Carbon, 6.3 Human Activity Altering the Carbon Cycle, 6.6C Radical Technologies to Reduce Carbon Emissions, 6.7 Human Activity Threatening the Carbon and Water Cycles. The coastal environment of the world is made up of a wide variety of landforms manifested in a spectrum of sizes and shapes ranging from gently sloping beaches to high cliffs, yet coastal landforms are best considered in two broad . South Dorset Coast Dalmatian coastline Formed by faulting and rising sea levels since the end of the last ice age West Cork, Ireland 1.Discordant Coastline 2.Rias Rock strata meets the coast at 90 degrees in parallel bands Weaker rocks (limestones) have been eroded creating long, thin bays (rias) in-between the mudstones and old . Today. For example, this could be a joint in chalk. Less resistant Purbeck limestone and Wealden Clay lie behind the Portland, with resistant chalk further north. Many emergent coastlines have existed since the glacial phases of the Pleistocene Epoch, which lasted from about 2,580,000 and 11,700 years ago because the sea levels were much lower than they are today. Full lesson covering the different types of erosion and geology along the coast. After the waves broke through, creating an opening, the softer clay after the limestone started to erode away as well, creating a cove (figure 4). The low-energy wave spills into the bays as . What Is A Concordant Coastline? - WorldAtlas The process of erosion can create different landforms along the coastline. The Adriatic Sea itself is a concordant landform, consisting of a body of water between parallel ranges. During the Devensian glacial the sea level was about 100 m lower than today as water was retained in huge ice sheets. Meanwhile on concordant coastlines, where layers of rock run parallel to the coastline, cliffs are much more dominant. Concordant coasts have alternating layers of hard and soft rock that run parallel to the coast. Create the most beautiful study materials using our templates. Add in the missing words. BBC Bitesize. 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 Isle of Purbeck, in Dorset, is an example of where a concordant and discordant coastline exist very close to one another. This continual process can weaken the joints and cracks in the cliff, causing pieces of rock to break off. It's a way of having all my information in one place. The rock strata are almost vertical, and the bands of rock are quite narrow. geography revision coastal landforms 264.4K views Discover short videos related to geography revision coastal landforms on TikTok. The coastal engineering for the shoreline protection involves: . (BBC, 2006). Awesome, well done! pg. There are different bands of rock that have shaped this discordant coastline, namely: Fig. Discordant These are where rock strata or structures are aligned at an angle to the coastline. 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. Concordant coastlines form coves, which are round areas of water that have narrow entries from the sea. In some cases it is estimated that there was a rise . An emergent coastline that "emerges" from the water--either the land has risen, or the water level has fallen. The concordant coastline runs from west to east along the south coast. Or in other words, these types of coastlines have the same type of rock all along its length. Discordant and Concordant Coastlines GCSE Geography A Level Revision Coasts - YouTube 2:20 Discordant and Concordant Coastlines GCSE Geography A Level Revision Coasts TheGeographyGuy 1.66K. The meanings of the terms lithology, concordant and discordant coastlines are apparent throughout the lesson. 2B.2B Their Morphology - A-LEVEL GEOGRAPHY REVISION: EDEXCEL Discordant coastline occurs where bands of differing rock type run perpendicular to the coast. Test your knowledge with gamified quizzes. shale), eroding quicker than the hard, resistant rock (e.g. lulworth cove concordant coastline | Future Property Exhibiitons Cliffs and Wave-cut platforms Before you revise the formation of these landforms, have a look at this video and make sure you are able to identify the landforms from their distinctive features. Large colonies of sea lions and seals sleep and breed along coastlines, entering the seas to hunt. . Erosional landforms - Coastal landforms - AQA - BBC Bitesize Seven cliff-top homes are badly damaged as the largest tidal surge in 60 years batters the east coast of England. Sea level rise at the end of the Devensian Glacial overtopped the low points of the anticlines and the sea flooded synclines. Coastal landforms - erosion and deposition - BBC Bitesize Bull's Head in St Oswald's Bay. Type # 1. What factors influence the effects and response to tectonic activity? What is migration and why do people migrate? . Tectonic forces produced by the collision of African and Eurasian plates compressed Carboniferous Limestone during the Alpine Orogeny 50 million years ago. What factors affect population density and distribution? The sea attacks a weakness in the base of the cliff. Two Earthquakes Compared Nepal and LAquila, Lombok Indonesia Earthquake 2018 Case Study, 2018 Sulawesi Indonesia Earthquake and Tsunami Case Study. These will be exam question style ranging from 4, 6 and 9 mark . Coastlines where different types of rock alternate between hard and soft rock are called discordant coastlines and will have more bays and headlands along its length. Coastal landscapes in the UK - AQA - BBC Bitesize Concordant coastline 2. Economic losses to businesses if areas become unattractive and depopulated. Because of this difference in erosion resistance, discordant coastlines are home to headlands, due to eroding hard rock, and bays, due to eroding soft rock. The differing resistance to erosion leads to the formation of headlands and bays. Touch device users . Coastal Environments CPD - Erosional Landforms, Coastal Management and Fieldwork on the Holderness Coast; Coastal Environments CPD - Erosional Erosion, Coastal Management, Deposition and Fieldwork on the Holderness Coast . A famous example of a coastline. Did you know? Because the soft rock is exposed, it is eroded faster than the hard rock. It is also known as Pacific type coastline, longitudinal coastline, or Dalmatian coastline. Soft rocks like mudstone and siltstone Rocks outcrop at right angles to the sea, forming headlands and bays. Time for Geography | Coasts Videos Okay, now we know what coastlines are. Describe the characteristics of destructive waves (3) Coasts - Grade Booster. These coves are formed by waves breaking through an outer layer of hard rock, such as limestone, and then, over time, the waves sweep away the soft rock further inland, like sand and clay, creating a cove. The coastline between Durlston Head and Studland Bay in Dorset, UK, is a great example of a discordant coastline. Humans, too, could almost be classified as a coastal species! Coastlines where different types of rock alternate between hard and soft rock are called discordant coastlines and will have more bays and headlands along its length. When a wave breaks upon the shore, rocks and pebbles that are being carried collide with each other breaking them and eventually making them smaller and smoother. Spanning 243 kilometers along Australia's southeastern coast from Torquay to Allansford, the Great Ocean Road is one of the world's most scenic coastal routes. A unique coastline within the UK is Lulworth Cove in Dorset. Long offshore islands and coastal inlets are running parallel to the coastline. How has the vegetation in the temperate deciduous forest adapted to the climate? Unique access to harvest all resources within the EEZ, including fishing and fracking. Wave cut platforms as illustrated in the diagram and shown in the photograph are remnants of the previous cliff line. Sediment Cells. All maps, graphics, flags, photos and original descriptions 2023 worldatlas.com, Coastal Countries With The Shortest Coastline, Meet 12 Incredible Conservation Heroes Saving Our Wildlife From Extinction, India's Leopard God, Waghoba, Aids Wildlife Conservation In The Country, India's Bishnoi Community Has Fearlessly Protected Nature For Over 500 Years, Wildfires And Habitat Loss Are Killing Jaguars In The Amazon Rainforest, In India's Sundarbans: Where People Live Face-To-Face With Wild Tigers, Africa's "Thunderbird" Is At Risk Of Extinction. Even London is built along the River Thames, which flows into the North Sea. What is the difference between a discordant and concordant coastline This differential erosion creates headlands and bays along discordant coastlines. Each process can produce several coastal features; however, they often work together to sculpt the coastlines. pptx, 1.58 MB. 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 . concordant and discordant coastlines bbc bitesize A concordant coastline diminated by limestone in the map has the same type of rock along its length. A concordant coastline is an arrangement of rock strata along the coastline. The processes have been operating over the last 8000 years. There are 3 main groups of coastal features which result from coastal erosion: 1. B Gradually the . Lulworth . Bays and headlands are common features along discordant coastlines. Rock strata that are less resistant (due to the rock unit's lithology and structure) erode rapidly to form indented bays. e.g. The relatively gentle profile of the beach with a steep ridge at the top of the beach means that the backwash soaks into the sand or slowly drains away. The water. GCSE Geography Revision : Unit 1: The Coastal Zone - Blogger