Fun Fact: if you are interested in dinosaurs and dinosaur fossils, Durlston Bay is a renowned site for Early Cretaceous fossils. Key Question: What are the different landforms of the Jurassic Coast? We use cookies to ensure that we give you the best experience on our website. Emergent coastlines can pop up after tectonic activity, where the land is being pushed up by the tectonic plates. The Early Cretaceous, sometimes known as Lower Cretaceous, is the period stretching from 145 million years ago to 100.5 million years ago. More recently the village was affected by the tragic floods of 1953 that claimed the lives of 76 Norfolk . . (For example the east of the Dorset coast) How Geology affects the coast . When the following wave breaks, its swash will deposit more material without it being 'captured' by the backwash of the preceding wave. The four major types of coastlines are emergent coastlines; submergent coastlines; concordant coastlines; and discordant coastlines. Coastal Geology. BBC Bitesize. What are the different types of weathering? Concordant coastlines form coves, which are round areas of water that have narrow entries from the sea. The concordant coastline runs from west to east along the south coast. More erosion at the present (2016-2017) is occurring further east, down drift, in the Barton Golf Course and Hordle Cliff area, as a result of the Barton Sea Defences (the so-called "Terminal . How have plants adapted to cold environments? Concordant coastlines form coves, which are round areas of water that have narrow entries from the sea. A hard rock type is resistant to erosion and creates a promontory whilst a softer rock type is easily eroded creating a bay. Bay and headland - Durdle Door, Dorset. The concordant coastline runs from west to east along the south coast. Beara Peninsula to the north formed from more resistant Devonian Old Red Sandstone and projects 35 km into the Atlantic Ocean. Concordant Coasts . The Portland limestone is resistant to erosion; then to the north there is Swanage Bay where the rock type is a softer greensand. How is a cold environment interdependent? Economic losses to businesses if areas become unattractive and depopulated. Waves are the main reason for coastal change. The Jurassic Coast is a hugely diverse and beautiful landscape underpinned by incredible geology of global importance. A concordant coastline is where the same rock runs along the length of the coast. 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. Opportunities and Challenges in the Sahara Desert, Opportunities and Challenges in the Thar Desert, Opportunities and Challenges in the Western Desert. 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. Lerne mit deinen Freunden und bleibe auf dem richtigen Kurs mit deinen persnlichen Lernstatistiken. Where the rock outcrops run parallel to the sea. Gcse Geography Revision. The low-energy wave spills into the bays as . 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 . On a discordant coastline, alternating layers of hard and soft rock are perpendicular to the coast. Shaping our coasts. Approximately 40% of all people live within 100km of a coastline. When the auto-complete results are available, use the up and down arrows to review and Enter to select. Where the land rises to the sea there are several parallel strata of Jurassic rocks, including Portland limestone and the . How does flooding affect humans and the environment? Both concordant and discordant. formed by the erosion of less resistant Wealden Clays. 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. Sediment Cells. Both concordant and discordant. chalk) May 30, 2019 - Learn and revise about waves and the coastal zone with BBC Bitesize KS3 Geography. Concordant coastlines form coves, which are round areas of water that have narrow entries from the sea. Paw Patrol Does Ryder Have A Crush On Katie, Categories . Coasts - Erosion and Geology | Teaching Resources Coasts can be classified in a variety of . What are the three processes that shape the coastline? It has a variety of other micro-features and a unique geology. 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. Correct! Coastlines of Emergence. Concordant coastlines - A coastline parallel to the land structures which form the margin of an ocean basin. Historic records indicate that over 250 m of land were lost between 1600 and 1850. Soluble materials dissolve in water and are carried along. Rock strata that are less resistant (due to the rock unit's lithology and structure) erode rapidly to form indented bays. Label two landforms shown in the photograph (2) Coasts - Grade Booster. Bands of soft rock such as clay and sand are weaker therefore can be eroded quickly. The discordant coastline runs from 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 . Waves in the middle of the bay, where the water is deeper, do not lose velocity as . How do changes affect the balance of an ecosystem? In addition, as waves approach a coast, they are refracted so that their energy is concentrated around headlands but reduced around bays. Today. StudySmarter is commited to creating, free, high quality explainations, opening education to all. Discordant coasts have a crenellated pattern of projecting headlands and indented bays. They are gentle, flat waves with a strong swash and a weak backwash; as a result, constructive waves build beaches. 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. This is considered sovereign national territory, the same as boundaries on land. These are found in Haffs, also known as lagoons, on the Baltic Sea's southern shores. Quick revise. How can we increase the amount of food produced globally? The longer the fetch length and the faster the wind speed, the . Concordant coastline 2. Coastlines of Submergence: i. Ria Coast: During the Ice Age a great deal of water was locked up in ice. Concordant coastlines tend to have fewer bays and headlands. coastal landforms, any of the relief features present along any coast, the result of a combination of processes, sediments, and the geology of the coast itself. The procedure for calculating concordant and discordant pairs compares the classifications for two variables (for example, X and Y) on the same two items. concordant and discordant coastlines bbc bitesize The image below shows the narrow opening created in the limestone and the cove that formed afterwards. 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. If the coastline is discordant then the rock type will change as we go up the coastline, An example of a discordant coastline is swanage. Caves occur when waves force their way into cracks in the cliff face. Many of our major cities have developed along oceanic coasts as well: think of New York City, Tokyo, Istanbul, Dubai, Hong Kong, and Copenhagen, just to name a few! lulworth cove concordant coastline. There are 3 main groups of coastal features which result from coastal erosion: 1. Concordant coastlines are also called 'concordant longitudinal' or 'Pacific type' coastlines. 3 Revision Guides Business Studies: - Revise Edexcel GCSE Business, Units 1, 3 & 5 Revision Guide Revise Edexcel GCSE Business, Units 1, 3 & 5 Revision workbook Computing: - Students have already been provided with a revision guide and question books. The Holderness Coastline is in the North of England and runs between the Humber Estuary in the south and a headland at Flamborough head. 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 ). They are most common where fetchis short. The outer hard provides a protective barrier to erosion of the softer rocks further inland. A combination of geological structure and sea level riseproduces the morphology of landforms aligned parallel to the coastline. - Headlands form along discordant coastlines in which bands of soft and hard rock outcrop at right angles to the coastline. These will be exam question style ranging from 4, 6 and 9 mark questions. Sometimes the outer hard rock is punctured allowing the sea to erode the softer rocks behind. What are the social and economic opportunities associated with the growth of Rio? Corrosion is also known as solution. Discordant coastlines form where geology alternates between bands of hard and soft rock (see image below). Pinterest. How has hot desert vegetation adapted to the climate? The first difference between concordant and discordant coastlines is that the concordant coastlines are composed of similar rock types whereas, in the case of discordant coastlines, the rocks are of different kinds. Bull's Head in St Oswald's Bay. Or in other words, these types of coastlines have the same type of rock all along its length. However, when the hard rocks punctured by either faults or ridges, inland soft rocks yield to erosion. Waves are produced by friction between the wind and water, resulting in an energy transfer from the wind to the sea. The meanings of the terms lithology, concordant and discordant coastlines are apparent throughout the lesson. Discordant These are where rock strata or structures are aligned at an angle to the coastline. This is called a discordant coastline. The differing resistance to erosion leads to the formation of headlands and bays. Concordant coasts form where geological structure is such that different rock strata or folds are aligned parallel to the coastline. Identify your study strength and weaknesses. Concordant coastlines are characterised by bands of similar types of rocks running parallel to the coast. Headlands and bays can form on concordant coastlines too, as has happened . A concordant coastline occurs where the bands of differing rock types run parallel to the coast. Caves occur when waves force their way into cracks in the cliff face. Barton-on-Sea, in particular, is a well-known place to study coast erosion and sea-defence work, some successful, some partly successful, and some failed. It is also known as Pacific type coastline, longitudinal coastline, or Dalmatian coastline. If you are citizen of an European Union member nation, you may not use this service unless you are at least 16 years old. How is urban planning improving the quality of life for the urban poor in Rio de Janeiro? Chesil Beach in Dorset was formed this way. How are Nigerias trading and political relationships changing? Their wavelength is .and a.. frequency (8-10 waves per minute). 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. Practice Questions: Describe the differences between a concordant and a discordant coastline (4 marks) Explain how headlands form (3 marks) Explain how coves are formed (3 marks). starter: Students examine the picture and discuss what is happening to the houses and why. Consequently, the water from the sea sweeps away the soft rocks leaving behind a circular land formation known as a cove. North of Swanage, the chalk outcrop creates the headland which includes Old Harry Rocks. Fetch length along with the wind speed (or strength) determines the size of waves produced. What percent of the global population lives within 100km of a coastline? Create and find flashcards in record time. Coastal landscapes in the UK - AQA - BBC Bitesize Ordinal trends and finding concordant and discordant pairs The water. Coastlines, where the geology alternates between strata (or bands) of hard rock and soft rock are called discordant coastlines. Coastlines where the geology alternates between bands of hard and soft rock which are perpendicular to the shore are called discordant coastlines. How have animals adapted to cold environments? Wave Refraction and Coastal Defences. Dip is the angle of inclination of titled strata. Now you can find what you're looking for wherever it lives. 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.
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