discordant coastlines. The processes have been operating over the last 8000 years. They have low energy and an elliptical orbit. 2: Durlston headland and bay (https://en.wikipedia.org/wiki/File:Durlston_bay_from_durlston_castle.jpg) by Jim Champion (https://commons.wikimedia.org/wiki/User:JimChampion) licensed by CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0/deed.en), Fig. Destructive waves are usually very high, over 1m. In contrast with emergent coastlines, submergent coastlines are coastlines submerged under water due to rising sea levels. The sea has broken through this barrier and easily eroded the clays behind it. Meanwhile on concordant coastlines, where layers of rock run parallel to the coastline, cliffs are much more dominant. How has the growth of Lagos caused inequality? Little Hilbre Island (Cheshire) by Google Earth / ESRI, Imagery 2016 Getmapping plc, Map data 2016 Google. It has a variety of other micro-features and a unique geology. Students will learn about different types of rock and will consider how resistance can affect rates of erosion. Sandridge formed bars across some bays and river mouths, with trapped river water forming a lagoon behind (callled haffs in Poland on the Baltic Sea). (bands) of hard rock and soft rock; many bays and headlands. What is a concordant coastline? Coasts can be classified in a variety of . True or False: In 1982, the United Nations Convention on the Law of the Sea created international maritime boundaries based on relative naval power. What is the value of the tropical rainforest? GCSE Geography Revision : Unit 1: The Coastal Zone - Blogger As a wave undercuts a cliff the cliff retreats. As a result, it does not travel far up it. BBC Geography Bitesize: Coastal Processes Flashcards | Quizlet The soft rock is made of clay and sands, and the hard rock is chalk and limestone. 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 . How have plants adapted to cold environments? Long offshore islands and coastal inlets are running parallel to the coastline. The Isle of Purbeck, in Dorset, is an example of where a concordant and discordant coastline exist very close to one another. Bands of soft rock such as clay and sand are weaker therefore can be eroded quickly. Named after the Dalmatia region on the Adriatic Sea. More recently the village was affected by the tragic floods of 1953 that claimed the lives of 76 Norfolk . 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 . The cove is located in a South West England County known as Dorset that is found along the English Channel. Or built a sand castle next to the waves? concordant and discordant coastlines bbc bitesize Emergent coastlines have emerged from the water; submergent coastlines have submerged below the water. concordant and discordant coastlines It is only when the water enters shallower areas that the water itself moves forward. Geology. Irrespective of whether the coastline is concordant or discordant, as wave refraction takes place around the headlands and erosion of the bay is reduced, sub-aerial weathering such as corrosion and corrasion begins to . Coastlines are very important to people because they have many uses, but mankind is also placing coastlines under severe threat. e.g. Tectonic forces produced by the collision of African and Eurasian plates compressed Carboniferous Limestone during the Alpine Orogeny 50 million years ago. The relative resistance of rock types influences the degree of indentation of bays. The site is self-funded and your support is really appreciated. Coasts are important zones in natural ecosystems, often home to a wide range of biodiversity.On land, they harbor important ecosystems such as . 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. the same rock types are parallel to the coastline, with alternating bands of different rock types running parallel to the coastline behind it (as opposed to a 'discordant coastline' where the rock types are perpendicular to the coastline, presenting differing rock types to the sea along the coastline). Wave cut platforms as illustrated in the diagram and shown in the photograph are remnants of the previous cliff line. Specification and other support materials for teachers, including delivery guides Explore. The image below (figure 2) is taken at Durlston Head, which shows the bay (yellow) and the headland (red). Chucky Trill Net Worth 2020. The following are facts about constructive waves. Lerne mit deinen Freunden und bleibe auf dem richtigen Kurs mit deinen persnlichen Lernstatistiken. GCSE Geography Coastal landscapes in the UK learning resources for adults, children, parents and teachers. In some cases it is estimated that there was a rise . Discordant coastline occurs where bands of differing rock type run perpendicular to the coast. https://commons.wikimedia.org/wiki/File:Lulworth.png. Learn about and revise coastal landforms, whether caused by erosion or deposition, with GCSE Bitesize Geography (OCR). The sea attacks a weakness in the base of the cliff. (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. A hard rock type is resistant to erosion and creates a promontory whilst a softer rock type is easily eroded creating a bay. The part of the wave in the deeper water moves forward faster causing the wave to bend. Coastlines with the same type of rock along its length tend to have fewer features ad are called concordant coastline. This differential erosion creates headlands and bays along discordant coastlines. Best free resources for CAIE IGCSE Geography 0460 Theory including summarized notes, topical and past paper walk through videos by top students. Geology is the study of the types of rocks that make up the Earth's crust. 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. Assessment week 2 (WB 24th February 2020) - End of unit test - Physical landscapes of the UK. Lulworth Cove is a World Heritage site and part of the Heritage Coastline. 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 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. Coastlines with the same type of rock along its length tend to have fewer features ad are called concordant coastline. A concordant coastline occurs where the bands of differing rock types run parallel to the coast. Dip is the angle of inclination of titled strata. This cove is located near the village of West Lulworth and is one of the best examples of a concordant coastline. The time wind takes to blow, wind speed and the fetch (distance the sea has covered) influence wave sizes. Shingle ridge reconnected island of Portland Bill to land (a tombolo). 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. Safe access points to the shoreline at several points around the edge. Gcse Geography Revision. Bands of soft rock such as clay and sand are weaker therefore they can be eroded quickly. 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. What are the differences in global calorie intake and food supply? Learn about and revise coastal landforms, whether caused by erosion or deposition, with GCSE Bitesize Geography (AQA). Lulworth cove where an oval shaped bay has been formed by more rapid erosion of the less resistant clay that lie behind the . 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. Numerous plants and animals have adapted to live along coastlines. Headlands and bays can form on concordant coastlines too, as has happened . Coastlines are very important to people because they have many uses, but mankind is also placing coastlines under severe threat. Concordant coastlines tend to have fewer bays . In some cases it is estimated that there was a rise . Upload unlimited documents and save them online. Can the risks of volcanic eruptions be reduced? The process begins with seawater hitting on the coastline. Either way, there is now a (bit of) coastline that is no longer submerged under water. 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. Landscapes. The significance of food, water and energy, An overview of global inequalities in the supply and consumption of resources, Carbon footprints, food miles and moves towards local sourcing of food. 4 - the process of forming Lulworth Cove, Dorset, UK. Castleton A tourist honey pot in The Peak District, Case Study Inner City Redevelopment Londons Docklands. Insert links to other pages or uploaded files. The meanings of the terms lithology, concordant and discordant coastlines are apparent throughout the lesson. In Cork in the south west of the Republic of Ireland, Formed from less resistant Carboniferous Limestone. Which type of underlying geology is most likely to be formed into straight cliffs? Coastlines of Emergence. Coasts are important zones in natural ecosystems, often home to a wide range of biodiversity.On land, they harbor important ecosystems such as . The rise in sea level can be the result of an increase in water volume or the sinking of the land's surface. Each process can produce several coastal features; however, they often work together to sculpt the coastlines. Concordant coastlines form coves, which are round areas of water that have narrow entries from the sea. material at the coast and in a river. 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. Meltwater rivers on land beyond the ice front deposited thick layers of sand and gravels onto outwash plains (sandurs). Pinterest. 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. How has demand for water in the UK changed? Human actions and Physical factors affecting the Delta. The difference in rock types between discordant and concordant coastlines means that there are differences in erosion. The discordant coastline runs from Studland Bay to Durlston Head as the geology changes from clay and sands, to chalk, to clay and . This process. 2B.2A Concordant and Discordant - A-LEVEL GEOGRAPHY REVISION: EDEXCEL Start studying BBC Geography Bitesize: Coastal Processes. The Dorset Coast contains a range of landforms including Durdle Door, Lulworth Cove . For example, this could be a joint in chalk. What is a discordant coastline? The Isle of Purbeck, in Dorset, is an example of where a concordant and discordant coastline exist very close to one another.
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