Have you ever gone for a stroll on a beach? Coastlines also help us demarcate international boundaries. The sea attacks a weakness in the base of the cliff. 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. Rock strata that are less resistant (due to the rock unit's lithology and structure) erode rapidly to form indented bays. Geological structure is the characteristics and arrangement of rock units. Concordant coastlines tend to have fewer bays and headlands. How do weather and climate affect river landscapes? The coast is very young due to recent ice ages and resulting sea level change. Geology is the study of the types of rocks that make up the Earth's crust. e.g. 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. Hilbre Island (Cheshire) is an example of a possible fieldwork location. Large colonies of sea lions and seals sleep and breed along coastlines, entering the seas to hunt. These are found in Haffs, also known as lagoons, on the Baltic Sea's southern shores. Which landforms result from moving or melting ice? 3. Coastlines of Submergence: i. Ria Coast: During the Ice Age a great deal of water was locked up in ice. Aqa. Which of the following are associated with discordant coastlines? A combination of geological structure and sea level riseproduces the morphology of landforms aligned parallel to the coastline. What is the impact of humans on the Taiga? Coastal Geology. Correct! The geology of the Isle is complex. Almera in Spain: a large-scale agricultural development, Sustainable Food Supplies in an LIC Bangladesh. Over time, waves beating against the shore will wear it down (or erode it). Start studying BBC Geography Bitesize: Coastal Processes. (For example the east of the Dorset coast) How Geology affects the coast . Students will learn about different types of rock and will consider how resistance can affect rates of erosion. There are 3 main groups of coastal features which result from coastal erosion: 1. What does scenery formed by erosion look like? Lulworth Cove is located on the so-called Jurassic Coast, spanning 185 million years of geological history, from the Triassic (252 - 201 million years ago), Jurassic (199.6 - 145.5 million years ago), and Cretaceous (145 - 66 million years ago) periods. Caves, arches, stacks and stumps Weathering and erosion can create caves, arches, stacks and stumps along a headland. How does food insecurity affect the environment? Both concordant and discordant. . 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. Emergent coastlines can have features such as marine terraces, relict sea cliffs, sea stacks, and raised beaches. Strata are different layers (or beds) of rock. Bays and headlands are common features along discordant coastlines. coastlines. Along the coastline of Dorset, there are concordant and discordant coastlines. Consequently headlands and bays form along discordant coastlines and whilst headlands remain exposed to the force of the waves, bays are sheltered. Coastal. Concordant and discordant coastlines. What is the structure of the Temperate Deciduous Woodland? The Isle of Purbeck, in Dorset, is an example of where a concordant and discordant coastline exist very close to one another. Concordant coastlines - A coastline parallel to the land structures which form the margin of an ocean basin. The coastal engineering for the shoreline protection involves: . Along the coastline of Dorset, there are concordant and discordant coastlines. Anak Krakatau & Sunda Strait Tsunami Indonesia Case Study 2018. What factors affect population density and distribution? A submergent coastline is a coastline that has submerged below the water. Why is there a trend towards agribusiness? Shake Hands With Beef Girl, 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 this time, glaciers and ice sheets were retreating, causing a rise in global sea levels and localised changes in land height. Economic losses to businesses if areas become unattractive and depopulated. Learn about and revise coastal landforms, whether caused by erosion or deposition, with GCSE Bitesize Geography (AQA). What are the three processes that shape the coastline? Today. discordant coastlines. ALEVEL GEOGRAPHY - COASTAL LANDSCAPES | EQ1 : the littoral zone ; offshore, nearshore and backshore. Elsewhere a ridge of sand forms a line of barrier islands, sand banks and mud flats parallel to the coast, e..g Friesian Islands off the North Sea coast of the Netherlands, Germany and western Denmark. While not every UN member has ratified UNCLAS, most nations abide by it anyway. Erosion. It is also known as Pacific type coastline, longitudinal coastline, or Dalmatian coastline. GCSE and A Level Geography Revision. This belongs to: _____. Concordant coasts have alternating layers of hard and soft rock that run parallel to the coast. The shifting coastlines can impact freshwater resources near the coasts by creating brackish mixtures, and can also pose an obvious danger to infrastructure built directly along the coast. Will you pass the quiz? Where are polar and tundra environments located? Where the rock outcrops run parallel to the sea. Erosion Sea forces change coastal landscapes with the wind being the major source of waves. The differing resistance to erosion leads to the formation of headlands and bays. 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. This belongs to: _____. The time wind takes to blow, wind speed and the fetch (distance the sea has covered) influence wave sizes. These bands of rocks alternate between soft rock and hard rock, all eroding at different rates and in varying ways. material at the coast and in a river. How is demand for energy changing in the UK? This is considered sovereign national territory, the same as boundaries on land. Over time the sea can wash away an entire coastline, forcing back human uses of that land (such as settlements or farms) and letting the sea . Introduction to the location of the Delta. One of the topics looked at in GCSE Geography is the features that are found on a coastline. The three major coastal processes include erosion, transportation and deposition. Emergent Coastlines. On discordant coastlines, differential erosion may occur, where bands of hard and soft rock outcrop at right angles to the sea. 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. Constructed by Australian soldiers over the course of 13 years and officially opened in 1932, the Great Ocean Road is dedicated to fallen soldiers of . Risks facing the Delta. What is Nigerias location and importance? Meanwhile on concordant coastlines, where layers of rock run parallel to the coastline, cliffs are much more dominant. 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. This happened over about 1000 years, (very rapid) and submerged coastlines. These will be exam question style ranging from 4, 6 and 9 mark questions. The Isle of Purbeck, in Dorset, is an example of where a concordant and discordant coastline exist very close to one another. Bull's Head in St Oswald's Bay. 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. They are most common where .. is short. There are four processes involved in the eroding coastlines. In 1982, the United Nations held a Convention on the Law of the Sea (UNCLAS), where maritime (sea) boundaries were established. 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 . A discordant coastline occurs where bands of different rock type run perpendicular to the coast. This is important in delineating who has legal, economic, and military jurisdiction in areas along the coast. A concordant coastline produced by the geological structure of folds parallel to the coast. These form where deposition produces unconsolidated geological structures parallel to the coastline. Links to wider reading and an introductory video. 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. Many of these types of coastlines were actually formed toward the end of the Last Glacial Period (LGP). There are different bands of rock that have shaped this discordant coastline, namely: Fig. The Jurassic Coast begins at Orcombe . A concordant coastline has the same type. What is the location and importance of Rio de Janeiro? Importance of the Delta for the region. Waves are produced by friction between the wind and water, resulting in an energy transfer from the wind to the sea. UK Sediment Cells Source: Scool. The process of erosion can create different landforms along the coastline. Re-rerouting a two lane road can cost between 150,000 and 250,000 per 100 m. The collapse of the section of coast supporting the South Devon Main Line Railway in February 2014 cost 35 million to repair, and businesses in the South West lost 60 million. coastlines. This results in the formation of headlands and bays. 1 - Approximate locations on the coastline between Durlston Head and Studland Bay, map data: 2022 Google. BBC Bitesize. What are the causes of deforestation in the Amazon? Fun Fact: Lulworth Cove is a World Heritage Site and attracts approximately 500,000 visitors a year. 1. They have low energy and an elliptical orbit. Coastlines are very important to people because they have many uses, but mankind is also placing coastlines under severe threat. Discordant coastlines occur when bands of different types of rocks run perpendicular (at 90 degrees) to the coast. Soft engineering: Beach nourishment is a type of soft approach. Give the quiz another go and don't forget to read up on this area by heading over to our coasts resources using the topics link at the top of the page. A hard rock type is resistant to erosion and creates a promontory whilst a softer rock type is easily eroded creating a bay. 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. Specifically looking at the differences between concordant and discordant coastlines. Key Question: What are the different landforms of the Jurassic Coast? Can the risks of volcanic eruptions be reduced? A coastline is anywhere where the land meets the water. The coast is the border between the land and the sea. A famous example of a coastline. By registering you get free access to our website and app (available on desktop AND mobile) which will help you to super-charge your learning process. Why is the weather of the UK so changeable? Today. Sustainable Management of the Tropical Rainforest, Sustainable Management of the Amazon Rainforest. What are they? Stop procrastinating with our study reminders. It can be reached at low tide by walking from the mainland. A concordant coastline is where the same rock runs along the length of the coast. Shingle ridge reconnected island of Portland Bill to land (a tombolo). 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. Have all your study materials in one place. $14 million dollar house maine; The Holderness Coastline is in the North of England and runs between the Humber Estuary in the south and a headland at Flamborough head. 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. How do changes affect the balance of an ecosystem? (For example the south or the Dorset coast) . A hard rock type is resistant to erosion and creates a promontory whilst a softer rock type is easily eroded creating a bay. Discordant and concordant coasts in Dorset. 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. As mentioned earlier, discordant coastlines form headlands and bays; on the other hand, concordant coastlines form coves. It is also known as Pacific type coastline, longitudinal coastline, or Dalmatian coastline. Coastlines where the geology alternates between strata (or bands) of hard rock and soft rock are called discordant. It is only when the water enters shallower areas that the water itself moves forward. The coastline between Durlston Head and Studland Bay in Dorset, UK, is a great example of a discordant coastline. The difference in rock types between discordant and concordant coastlines means that there are differences in erosion. The image below shows a wave-cut platform formed at Flamborough, Holderness Coast. An explanation of the formation of the cove can be found on the right. Coastlines where the geology alternates between bands of hard and soft rock which are perpendicular to the shore are called discordant coastlines. 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. A wave-cut notch is created by erosional processes such . Not surprisingly, destructive waves destroy beaches. geography revision coastal landforms 264.4K views Discover short videos related to geography revision coastal landforms on TikTok. You need to do some work on landforms of coastal erosion. Learn about and revise coastal landforms, whether caused by erosion or deposition, with GCSE Bitesize Geography (AQA). Coastlines where the geology alternates between strata (or bands) of hard rock and soft rock are called discordant. Spits were formed in river mouths where the river was powerful enough to break through the sand ridge to the sea. We support the next generation of geographers and geoscientists, with inspiring educational videos for secondary school students and teachers. Wave Refraction and Coastal Defences. 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. How has the vegetation in the temperate deciduous forest adapted to the climate? Besides hosting a multitude of specialised plants and animals, coastlines are also critical to our economic and political infrastructures, providing people with sources of food and livelihoods and allowing us to determine where our borders actually end. 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. Which of the following are major types of coastlines? It has a variety of other micro-features and a unique geology. Where do volcanoes and earthquakes happen? What are the effects of deforestation in the Amazon? Use the resources provided to write notes that The longer the fetch length and the faster the wind speed, the . Why are deserts located along the tropics? For example the Neman Haff behind the bar running from the Kaliningrad in Russia to the Lithuanian coast at the mouth of the river Neman. A wave-cut platform is a wide, gently sloping surface found at the cliff's base and extends into the sea. Which of the following is NOT typically found in a coastal ecosystem? What are active, dormant and extinct volcanoes? Destructive waves are usually . What are the differences in global calorie intake and food supply? Jamaica Case Study, How can the growth of tourism reduce the development gap? What are the impacts of industry on the physical environment? Erosional landforms - Coastal landforms - AQA - GCSE Geography Revision - AQA - BBC Bitesize. Whenever you search in PBworks, Dokkio Sidebar (from the makers of PBworks) will run the same search in your Drive, Dropbox, OneDrive, Gmail, and Slack. Originally a band of resistant Portland . The Earth has around 620,000 kilometres (390,000 mi) of coastline. The LGP encompasses the period of c. 115,000 to c. 11,700 years ago. Lulworth cove is a perfect horseshoe bay found on the south coast of England in the county of Dorset, on the Jurassic coastline. Use the resources provided to write notes that UK Sediment Cells Source: Scool. Coastlines where the geology alternates between strata (or bands) of hard rock and soft rock are called discordant coastlines. Specification and other support materials for teachers, including delivery guides Explore. (bands) of hard rock and soft rock; many bays and headlands. 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. Caves occur when waves force their way into cracks in the cliff face. The meanings of the terms lithology, concordant and discordant coastlines are apparent throughout the lesson. What challenges have been caused by urban growth in Mumbai? Explore. The water, with an endless supply of waves, whether pounding or gentle ripples, is constantly changing coastlines around the globe. Seven cliff-top homes are badly damaged as the largest tidal surge in 60 years batters the east coast of England. 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.

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