Anak Krakatau & Sunda Strait Tsunami Indonesia Case Study 2018. 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. Waves can be gentle and infrequent or more significant, more frequent, and more powerful. Discordant coasts have a crenellated pattern of projecting headlands and indented bays. Discordant coastline occurs where bands of differing rock type run perpendicular to the coast. Emergent coastlines have emerged from the water; submergent coastlines have submerged below the water. Opportunities and Challenges in the Sahara Desert, Opportunities and Challenges in the Thar Desert, Opportunities and Challenges in the Western Desert. You don't have permission to comment on this page. The more the waves crash onto the beach, the more sediment is washed out to sea. Paymaya Annual Report, What is the difference between a discordant and concordant coastline 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. The Early Cretaceous, sometimes known as Lower Cretaceous, is the period stretching from 145 million years ago to 100.5 million years ago. 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). Even London is built along the River Thames, which flows into the North Sea. Create beautiful notes faster than ever before. 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 the following wave breaks, its swash will deposit more material without it being 'captured' by the backwash of the preceding wave. 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. If you've found the resources on this site useful please consider making a secure donation via PayPal to support the development of the site. Concordant coastlines tend to have fewer bays and headlands. What problems are caused by global warming? Erosion worsens as the waves becomes stronger. Joints,Dips and Faults in terms of rocks. Spits were formed in river mouths where the river was powerful enough to break through the sand ridge to the sea. It has a discordant coastline along the east and concordant coastline along the south. Coastlines also help us demarcate international boundaries. This happened over about 1000 years, (very rapid) and submerged coastlines. Sign up to highlight and take notes. Geology. Which type of underlying geology is most likely to be formed into straight cliffs? This is where waves approach the cliff; air may become trapped and compressed in joints and cracks along a cliff face. We support the next generation of geographers and geoscientists, with inspiring educational videos for secondary school students and teachers. pptx, 1.58 MB. The Jurassic Coast begins at Orcombe . 0. lulworth cove concordant coastline. 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. Coastlines where the geology alternates between strata (or bands) of hard rock and soft rock are called discordant. May 30, 2019 - Learn and revise about waves and the coastal zone with BBC Bitesize KS3 Geography. Coasts can be classified in a variety of . Importance of the Delta for the region. concordant and discordant coastlines bbc bitesize Coastal Erosion. shale), eroding quicker than the hard, resistant rock (e.g. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The water. Or in other words, these types of coastlines have the same type of rock all along its length. Erosional landforms - Coastal landforms - AQA - BBC Bitesize 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. Some concordant coasts have long, narrow islands running parallel to the coastline. There are 3 main groups of coastal features which result from coastal erosion: 1. Coasts Revision Booklet. Beach material is deposited as a bridge of sediment (berm) at the top of the beach. This is called a discordant coastline. Create and find flashcards in record time. Key Question: What are the different landforms of the Jurassic Coast? 1 - Approximate locations on the coastline between Durlston Head and Studland Bay, map data: 2022 Google. GCSE 9-1 Coasts: Erosional Landforms Bundle. The process begins with seawater hitting on the coastline. Landscapes. Time for Geography | Home Concordant coastline - Wikipedia Coastlines where the geology alternates between strata (or bands) of hard rock and soft rock are called discordant. - Due to the presence of soft and hard rock, differential erosion occurs, with the soft, less resistant rock (e.g. An explanation of the formation of the cove can be found on the right. A concordant coastline diminated by limestone in the map has the same type of rock along its length. The extent to which the shape of a beach or coast is created or altered depends mainly on the action of waves upon it. When a stretch of coastline is formed from different types of rock, headlands and bays can form. Sea forces change coastal landscapes with the wind being the major source of waves. 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 . discordant coastlines. The differing resistance to erosion leads to the formation of headlands and bays. Human and physical factors causing river flooding. Headlands and bays - Coastal landforms - CCEA - BBC Bitesize GCSE Geography Coastal landscapes in the UK learning resources for adults, children, parents and teachers. Sea turtles return to coasts to lay their eggs, and birds like gulls and pelicans do much of their hunting near the shore. What is the impact of humans on the savanna? A concordant coastline comprises bands of different rock types that run parallel to the shore. What is the impact of humans on the temperate deciduous woodland? Beara Peninsula to the north formed from more resistant Devonian Old Red Sandstone and projects 35 km into the Atlantic Ocean. Resistant Cretaceous Chalk forms the Foreland headland, projecting 2.5 km to the north. The updated BBC Bitesize website has a great video on . Distribution of earthquakes and volcanoes, Effects of earthquakes and volcanoes on people and the environment, Reducing the impacts of earthquakes and volcanoes, Population and settlement iGCSE Geography, The main causes of a change in population size, A country with a rate of high population growth China, A country which is over-populated Bangladesh, A country which is under-populated Australia, A country with a low rate of population growth or decline Japan. The hard rock acts as a protective barrier to the softer rock behind it preventing erosion. The coastal engineering for the shoreline protection involves: . They have a. gradient, typically under . Links to wider reading and an introductory video. Because the waves are so frequent, the backwash has less time to soak into the sand. The length of perimeter approx 2km. A wave-cut platform is a wide, gently sloping surface found at the cliff's base and extends into the sea. These act as agents of erosion because their . Risks facing the Delta. What are the economic and environmental issues of energy production? How have animals adapted to the rainforest environment? Reasons for Protecting Dawlish Warren: 1. The Holderness coastline - Coolgeography.co.uk A concordant coastline occurs where the bands of differing rock types run parallel to the coast. The UK's coastline is 31,368 km long (if you include all the main islands). How can we increase the amount of food produced globally? Waves are produced by friction between the wind and water, resulting in an energy transfer from the wind to the sea. False! Concordant coasts have alternating layers of hard and soft rock that run parallel to the coast. Teacher. Specifically looking at the differences between concordant and discordant coastlines. Published by at February 16, 2022. 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. The concordant coast may take one of two landform types. Extreme weather in the UK Beast from the East, Extreme Weather in the UK Summer Heatwave 2018. 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 time wind takes to blow, wind speed and the fetch (distance the sea has covered) influence wave sizes. It has a variety of other micro-features and a unique geology. The discordant coastline runs from Studland Bay to Durlston Head as the geology changes from clay and sands, to chalk, to clay and . Concordant coastlines - A coastline parallel to the land structures which form the margin of an ocean basin. Subsequently there was an increase in the waters of the oceans and the sea level rose appreciably. concordant and discordant coastlines bbc bitesize lulworth cove concordant coastline. B Gradually the . Which landforms result from moving or melting ice? Specifically looking at the differences between concordant and discordant coastlines. 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 Jurassic Coast begins at Orcombe . The outer hard rock is Portland limestone. The difference in rock types between discordant and concordant coastlines means that there are differences in erosion. A combination of geological structure and sea level riseproduces the morphology of landforms aligned parallel to the coastline. Now you can find what you're looking for wherever it lives. Headlands and bays can form on concordant coastlines too, as has happened . Today. For example, this could be a joint in chalk. Concordant coastlines tend to have fewer bays and headlands. Highly popular with tourists - 20,00 people on the spit at peak times (the Environment Agency concluded that between 18th August and the 12th December 2004, 487,624 visitors visited Dawlish Warren equating . The amount of energy is dependent on the wind speed, the length of time the . Part of the Dorset coastline in the UK running north from the Portland limestone of Durlston Head is a clear example of a discordant coastline. Coastlines, where the geology alternates between strata (or bands) of hard rock and soft rock are called discordant coastlines. Lulworth cove is a perfect horseshoe bay found on the south coast of England in the county of Dorset, on the Jurassic coastline. Sheep's Head Peninsula to the south formed from more resistant coarse sandstone, projects out 21 km. Geological structure is the characteristics and arrangement of rock units. 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. Stop procrastinating with our smart planner features. Discordant coasts forms where geological structure is such that different rock strata of folds are aligned at an angle to the coastline. Sustainable Management of the Tropical Rainforest, Sustainable Management of the Amazon Rainforest. 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. Teacher. How has rainforest vegetation adapted to the climate? While discordant coastlines have bands of different rock types running perpendicular to the coast, concordant coastlines have bands of similar rock types running parallel (alongside) to the coast. material at the coast and in a river. Did you know? Learn vocabulary, terms, and more with flashcards, games, and other study tools. They are most common where .. is short. Ways destructive waves destroy the coastline . In addition, as waves approach a coast, they are refracted so that their energy is concentrated around headlands but reduced around bays. Over time, waves beating against the shore will wear it down (or erode it). Definitions. A case study of the coastal recession at the Nile Delta for Edexcel A Level Geography. When the auto-complete results are available, use the up and down arrows to review and Enter to select. As erosion processes take place, the clay erodes away quicker than the. Discordant coastline occurs where bands of differing rock type run perpendicular to the coast. Meanwhile on concordant coastlines, where layers of rock run parallel to the coastline, cliffs are much more dominant. Where the land rises to the sea there are several parallel strata of Jurassic rocks, including Portland limestone and the . than in summer. A concordant coastline produced by the geological structure of folds parallel to the coast. Bits of rock and sand that the waves have picked up are thrown against the cliff face. It is one of the best examples in Europe of the stages of erosion on a concordant coastline. chalk) May 30, 2019 - Learn and revise about waves and the coastal zone with BBC Bitesize KS3 Geography. The differing resistance to erosion leads to the formation of headlands and bays. However, overall, access to a coastline can grant a country food supplies and economic resources that land-locked countries cannot acquire without trade. Create your own unique website with customizable templates. How is demand for energy changing in the UK? $14 million dollar house maine; Emergent coastlines happen when either the water level has fallen or the land has risen. Historic records indicate that over 250 m of land were lost between 1600 and 1850. This is considered sovereign national territory, the same as boundaries on land. . Wrong! A unique coastline within the UK is Lulworth Cove in Dorset. This differential erosion creates headlands and bays along discordant coastlines. 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. Create your own unique website with customizable templates. How does food insecurity affect the environment? Human actions and Physical factors affecting the Delta. The site is self-funded and your support is really appreciated. Dip is the angle of inclination of titled strata. Which of the following are associated with discordant coastlines? concordant and discordant coastlines bbc bitesize Call us (+254) 722 22 99 44 Email polucon@polucon.com Our Laboratories Nairobi & Mombasa washington sports club glover park Home Services concordant and discordant coastlines bbc bitesize Micro-Biology Services Agri - Services Instrumentation Division Environment Division Petroleum Division Corrosion is also known as solution. Coastlines are very important to people because they have many uses, but mankind is also placing coastlines under severe threat. Many of the major cities built directly along coastlines, such as New York City and Tokyo, will be forced to develop solutions that counter rising sea levels or else abandon waterfront infrastructures and construct further inland. 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. Wave refraction involves waves breaking onto an irregularly shaped coastline, e.g. Why are deserts located along the tropics? Economic losses to businesses if areas become unattractive and depopulated. 2. . Rocks outcrop at right angles to the sea, forming headlands and bays. Best study tips and tricks for your exams. Discordant These are where rock strata or structures are aligned at an angle to the coastline. Emergent coastlines can pop up after tectonic activity, where the land is being pushed up by the tectonic plates. Case Study: Coastal Management in Dawlish Warren - Blogger Jamaica Case Study, How can the growth of tourism reduce the development gap? Concordant coastlines tend to have fewer bays and headlands. What is a discordant coastline? B Gradually the . Discordant coastlines - where the rock layers alternate between harder and softer rock, which bays and headlands are more likely . It is also known as Pacific type coastline, longitudinal coastline, or Dalmatian coastline. These will be exam question style ranging from 4, 6 and 9 mark . How has demand for water in the UK changed? 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 . How are Nigerias trading and political relationships changing? 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 . This process. Rocks outcrop at right angles to the sea, forming headlands and bays. Discordant coastline . Discordant coastlines are characterised by different bands of rocks running perpendicular to the coast. Lulworth Cove is a World Heritage site and part of the Heritage Coastline. The northern part is Eocene clay (Barton Beds), including significant deposits of Purbeck Ball Clay. The Earth has around 620,000 kilometres (390,000 mi) of coastline. This belongs to: _____. The Earth has around 620,000 kilometres (390,000 mi) of coastline. How have animals adapted to cold environments? 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. BBC Geography Bitesize: Coastal Processes Flashcards | Quizlet The image below shows how the refracted wave becomes increasingly parallel to the shoreline. concordant coastlines. Portland limestone erodes very slowly, retreating landwards by marine undercutting and collapse to form a straight W-E coastline. Erosion worsens as the waves becomes stronger. 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. North of Swanage, the chalk outcrop creates the headland which includes Old Harry Rocks. Many of these types of coastlines were actually formed toward the end of the Last Glacial Period (LGP). Test your knowledge with gamified quizzes. a ks3 unit work consisting of 7 complete lessons covering coasts: lesson 1 - introduction to uk physical landscapes lesson 2 - characteristics of ocean waves lesson 3 - erosion and geology lesson 4 - erosional landforms lesson 5 - transport and deposition lesson 6 - weathering and mass movement lesson 7 - coastal management decision making task Small particles are carried along by the water. Waves are created as wind blows over the water causing friction; this causes the water to start to move in a circular orbit. concordant coastlines. Along the coastline of Dorset, there are concordant and discordant coastlines. chalk) . What is the impact of humans on the desert? (bands) of hard rock and soft rock; many bays and headlands. These are found in Haffs, also known as lagoons, on the Baltic Sea's southern shores. South Dorset Coast 1. Copyright2007 - 2023 Revision World Networks Ltd. A coastline with the same type of rock along its length; fewer bays and headlands. Gradually the material is moved along the coastline, its . The Bay is also a product of sea level rise, since river erosion cut a low-relief river valley into Carboniferous Limestone, allowing the sea to flood inland and creating a ria at the start of the Holocene. As mentioned earlier, discordant coastlines form headlands and bays; on the other hand, concordant coastlines form coves. Less resistant Purbeck limestone and Wealden Clay lie behind the Portland, with resistant chalk further north. 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. As the wave approaches a coast, its progress is modified due to friction from the seabed, halting the motion of waves. There are two special types of submerged coastlines: ria coasts and fjord coasts. 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 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. 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 Where the rock outcrops run parallel to the sea. Additionally, hotter temperatures enable extreme weather events like hurricanes to occur more frequently. Fig. Okay, now we know what coastlines are. Lulworth . The following are facts about destructive waves. Development, population change and the demographic transition model, Strategies for reducing the development gap, How can the growth of tourism reduce the development gap? It has a variety of other micro-features and a unique geology. Concordant. If you've been to the beach, you've probably seen some of them: mangrove trees and hermit crabs, penguins and sea oats- organisms that can neither fully survive way out at sea, nor venture too far inland. Where are Temperate Deciduous Woodlands Located? Its 100% free. caused by the shrinkage of igneous rock as it cools. . The process of erosion can create different landforms along the coastline. what is the difference between concordant and discordant coast lines (4) concordant coasts are created where rock strata run parallel to the coastline in alternating bands of more resistant and less resistant rocks. A case study of a sparsely populated area Himalayan Mountains, A case study of a densely populated area Greater London. As we mentioned earlier, this tends to shift the coastline further inland. The rock types are typically of . It's a way of having all my information in one place. The differing resistance to erosion leads to the formation of headlands and bays. Coasts are shaped by the processes of erosion, transportation and deposition. It is used in geography and meteorology and is usually associated with coastal erosion.It plays a large part in longshore drift as well. A discordant coastline occurs where bands of different rock type run perpendicular to the coast. Can the risks of volcanic eruptions be reduced? 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 discordant coastline runs from Along the coastline of Dorset, there are concordant and discordant coastlines. concordant and discordant coastlines bbc bitesize The shape of the cove is the result of wave diffraction. When a stretch of coastline is formed from different types of rock, headlands and bays can form. Consequently headlands . Will you pass the quiz? discordant coastline diagram. A coastline with the same type of rock along its length; fewer bays and headlands . In places such as Worbarrow Bay and St Oswald's Bay, lateral widening of coves led to them joining into a single bay, with remnants of the outer Portland left as a line of stumps parallel to the coast, e.g. What are the three processes that shape the coastline? This results in the formation of headlands and bays. These form where deposition produces unconsolidated geological structures parallel to the coastline. A fjord coast hosts multiple fjords. How is a cold environment interdependent? The results are deep, lengthy, thin inlets surrounded by high cliff faces. The Jurassic Coast is a hugely diverse and beautiful landscape underpinned by incredible geology of global importance. This continual process can weaken the joints and cracks in the cliff, causing pieces of rock to break off. Lulworth Cove is a classic example of a 'concordant coast' - i.e. Bands of soft rock such as clay and sand are weaker therefore they can be eroded quickly. How does geology affect the formation of river landforms? What are the environmental impacts of economic development in Nigeria? 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). Four Main Aims Of The Private Security Industry Act, Death Jackie Kennedy Last Photo, Articles C
