The image below (figure 2) is taken at Durlston Head, which shows the bay (yellow) and the headland (red). 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 . As erosion processes take place, the clay erodes away quicker than the. Sign up to highlight and take notes. May 30, 2019 - Learn and revise about waves and the coastal zone with BBC Bitesize KS3 Geography. Did you know? If they move in opposite directions - one increases while the other decreases - then the pair is discordant. These will be exam question style ranging from 4, 6 and 9 mark questions. Create your own unique website with customizable templates. Ways destructive waves destroy the coastline . Gone surfing? The results are deep, lengthy, thin inlets surrounded by high cliff faces. Two Earthquakes Compared Nepal and LAquila, Lombok Indonesia Earthquake 2018 Case Study, 2018 Sulawesi Indonesia Earthquake and Tsunami Case Study. Discordant coastline occurs where bands of differing rock type run perpendicular to the coast. Sediment Cells. The site is self-funded and your support is really appreciated. GCSE 9-1 Coasts: Erosional Landforms Bundle. Lulworth cove is a perfect horseshoe bay found on the south coast of England in the county of Dorset, on the Jurassic coastline. What are the effects of economic development in Nigeria on quality of life? The United Nations uses coastlines to help determine international boundaries at sea. The LGP encompasses the period of c. 115,000 to c. 11,700 years ago. This creates a cove which is a circular area of water with a relatively narrow entrance way from the sea. Concordant Coasts . Reasons for Protecting Dawlish Warren: 1. Because the soft rock is exposed, it is eroded faster than the hard rock. Key Question: What are the different landforms of the Jurassic Coast? The net result is that the sediment gets smaller and smaller over time. On a discordant coastline, alternating layers of hard and soft rock are perpendicular to the coast. shale), eroding quicker than the hard, resistant rock (e.g. Straight coastline now formed by a concordant band of constant chalk. 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. Both concordant and discordant. 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. Explore. Why Is Biodiversity Critical To Life On Earth? The Isle of Purbeck, in Dorset, is an example of where a concordant and discordant coastline exist very close to one another. Coastlines are very important to people because they have many uses, but mankind is also placing coastlines under severe threat. Quick revise. It has a variety of other micro-features and a unique geology. Discordant These are where rock strata or structures are aligned at an angle to the coastline. Okay, now we know what coastlines are. . Learn about and revise coastal landforms, whether caused by erosion or deposition, with GCSE Bitesize Geography (AQA). While not every UN member has ratified UNCLAS, most nations abide by it anyway. Lulworth cove where an oval shaped bay has been formed by more rapid erosion of the less resistant clay that lie behind the . Sustainable Management of the Tropical Rainforest, Sustainable Management of the Amazon Rainforest. Concordant. Where are Temperate Deciduous Woodlands Located? Free and expert-verified textbook solutions. 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 the coast, it gains height and drops onto a steep beach. 4 - the process of forming Lulworth Cove, Dorset, UK. 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 . Bands of soft rock such as clay and sand are weaker therefore can be eroded quickly. Select all that apply. It's a way of having all my information in one place. How can we increase the amount of food produced globally? The concordant coastline runs from west to east along the south coast. Full lesson covering the different types of erosion and geology along the coast. A combination of geological structure and sea level riseproduces the morphology of landforms aligned parallel to the coastline. Find out more about concordant coastlines. The coast is the border between the land and the sea. The coastline between Durlston Head and Studland Bay in Dorset, UK, is a great example of a discordant coastline. Destructive waves are usually . A ria coast hosts multiple rias. A hard rock type is resistant to erosion and creates a promontory whilst a softer rock type is easily eroded creating a bay. Less resistant rocks are eroded more than the resistant . The discordant coastline runs from Studland Bay to Durlston Head as the geology changes from clay and sands, to chalk, to clay and . 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 The coastline determines everything. A concordant coastline is an arrangement of rock strata along the coastline. Discordant. Landforms in the middle course of a river. The sea attacks a weakness in the base of the cliff. Lulworth Cove is a classic example of a 'concordant coast' - i.e. Concordant and discordant coastlines Caves, arches, stacks and stumps Caves, arches, stacks and stumps are all features of a weathering or erosion process at different stages. Meanwhile on concordant coastlines, where layers of rock run parallel to the coastline, cliffs are much more dominant. Coasts can be classified in a variety of . 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. Large colonies of sea lions and seals sleep and breed along coastlines, entering the seas to hunt. concordant coastlines. Lines of islands separated by narrow sea channels parallel to the coast (sounds). It is where salts and acids within the seawater will gradually dissolve some types of rock found along the coast. What are the impacts of industry on the physical environment? 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. 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. How is demand for energy changing in the UK? Fig. They are, for the time being, out of reach of the current wave action and will therefore not be affected by them. Where are polar and tundra environments located? It has a discordant coastline along the east and concordant coastline along the south. 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 Isle of Purbeck, in Dorset, is an example of where a concordant and discordant coastline exist very close to one another. Lulworth Cove is a World Heritage site and part of the Heritage Coastline. Explain the process of longshore drift (3) Coasts - Grade Booster. How has hot desert vegetation adapted to the climate? Created up folded ridges (anticlines) and down folded valleys (synclines) aligned parallel to the coast. Emergent coastlines happen when either the water level has fallen or the land has risen. Lerne mit deinen Freunden und bleibe auf dem richtigen Kurs mit deinen persnlichen Lernstatistiken. A concordant coastline can take one of the following two landform types: An example of a concordant coastline is Lulworth Cove, again, in Dorset, UK (figure 3). Sea turtles return to coasts to lay their eggs, and birds like gulls and pelicans do much of their hunting near the shore. 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. Coastal. The gradual breakdown of rocks due to . pg. The coastal engineering for the shoreline protection involves: . What is the difference between a tornado and a hurricane? The image below shows a wave-cut platform formed at Flamborough, Holderness Coast. Waves are produced by friction between the wind and water, resulting in an energy transfer from the wind to the sea. Where the land rises to the sea there are several parallel strata of Jurassic rocks, including Portland limestone and 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. 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 is the distance between trough and crest called? Subsequently there was an increase in the waters of the oceans and the sea level rose appreciably. Both concordant and discordant. 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. 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. Use the resources provided to write notes that Wave Refraction and Coastal Defences. One of the topics looked at in GCSE Geography is the features that are found on a coastline. Correct! The concordant coast may take one of two landform types. They are most common where fetchis short. A unique coastline within the UK is Lulworth Cove in Dorset. In 2001 it was inscribed as a World Heritage Site by UNESCO for the outstanding universal value of its rocks, fossils and landforms. As our Earth warms, glaciers melt, causing the sea level to rise. Concordant coastlines form coves, which are round areas of water that have narrow entries from the sea. How do weather and climate affect river landscapes? Erosional landforms - Coastal landforms - AQA - GCSE Geography Revision - AQA - BBC Bitesize. The discordant coastline runs from Studland Bay to Durlston Head as the geology changes from clay and sands, to chalk, to clay and . Geological structure is the characteristics and arrangement of rock units. Although now a coastal village, Happisburgh was once some distance from the sea, parted from the coast by the parish of Whimpwell, long since eroded away. The time wind takes to blow, wind speed and the fetch (distance the sea has covered) influence wave sizes. Excluding the shoreline of Poole Harbour, the Dorset coastline is 142 kilometres (88 mi) long. Shake Hands With Beef Girl, Concordant coastlines tend to have fewer bays . The River Tees landforms of erosion and deposition, Case Study Ganges/Brahmaputra River Basin, Geological time is on a different time to human time, Different rocks create contrasting landforms and landscapes. Erosion Sea forces change coastal landscapes with the wind being the major source of waves. Coastlines with the same type of rock along its length tend to have fewer features ad are called concordant coastline. Wave cut platforms as illustrated in the diagram and shown in the photograph are remnants of the previous cliff line. Dip is the angle of inclination of titled strata. Why is there a trend towards agribusiness? A chalk cliff face is at the back of the cove. Find this Pin and more on KS4 Changing Landscapes of the UK by Mr Haden. concordant and discordant coastlines bbc bitesize. Soft engineering: Beach nourishment is a type of soft approach. This process. The Dalmatian type, named from Dalmatia on the Adriatic Sea, features long offshore islands and coastal inlets that are parallel to the coastline. In some cases it is estimated that there was a rise . Gradually the material is moved along the coastline, its . Beach material is deposited as a bridge of sediment (berm) at the top of the beach. Soft rocks like mudstone and siltstone Long spits of sands run parallel to the low coast, enclosing the coast. What is the structure of the Temperate Deciduous Woodland? 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. Coasts Revision Booklet. Sheep's Head Peninsula to the south formed from more resistant coarse sandstone, projects out 21 km. Economic losses to businesses if areas become unattractive and depopulated. This continual process can weaken the joints and cracks in the cliff, causing pieces of rock to break off. Coastlines where the geology alternates between bands of hard and soft rock which are perpendicular to the shore are called discordant coastlines. 4: Formation of Lulworth Cove (https://commons.wikimedia.org/wiki/File:Lulworth.png) by Red (https://en.wikipedia.org/wiki/User:Red) licensed by CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0/deed.en). True or False: In 1982, the United Nations Convention on the Law of the Sea created international maritime boundaries based on relative naval power. Limited law enforcement jurisdiction to prevent crimes related to customs or trafficking. Wrong! 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. What are the social and economic opportunities associated with the growth of Rio? Concordant coastlines tend to have fewer bays and headlands. Seven cliff-top homes are badly damaged as the largest tidal surge in 60 years batters the east coast of England. 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 ). (bands) of hard rock and soft rock; many bays and headlands. Caves occur when waves force their way into cracks in the cliff face. Correct! As stated earlier, coves are formed out of concordant coastlines. Coasts Revision Booklet. Fun Fact: if you are interested in dinosaurs and dinosaur fossils, Durlston Bay is a renowned site for Early Cretaceous fossils. The Earth has around 620,000 kilometres (390,000 mi) of coastline. Concordant coasts have alternating layers of hard and soft rock that run parallel to the coast. How does flooding affect humans and the environment? A concordant coastline comprises bands of different rock types that run parallel to the shore. This is called a discordant coastline. This quiz focusses in particular on those features which are caused by coastal erosion. A wave-cut notch is created by erosional processes such . 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. Hydraulic action, attrition, abrasion, and corrosion. The northern part is Eocene clay (Barton Beds), including significant deposits of Purbeck Ball Clay. 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. Practice Questions: Slideshow 2773107 by chanel Adapted from BBC. 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. Erosion. Tip: To turn text into a link, highlight the text, then click on a page or file from the list above. 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 . However, structure is not the only factor influencing the indentation of Swanage Bay, since Swanage bay faces east, and is sheltered from the prevailing south westerly wind and highest energy waves. 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 . Hilbre Island (Cheshire) is an example of a possible fieldwork location. The differing resistance to erosion leads to the formation of headlands and bays. Caves, Arches, Stacks and Sumps 3. Touch device users . The Portland limestone is resistant to erosion; then to the north there is Swanage Bay where the rock type is a softer greensand. (8) Coasts - Grade Booster Geog' Clips pg. There are rias throughout the world, including Poole Harbour in Dorset. Lulworth Cove has occurred on a concordant coastline. The longer the fetch length and the faster the wind speed, the . Almera in Spain: a large-scale agricultural development, Sustainable Food Supplies in an LIC Bangladesh. The differing resistance to erosion leads to the formation of headlands and bays. Awesome, well done! A combination of geological structure and sea level riseproduces the morphology of landforms aligned parallel to the coastline. In addition, as waves approach a coast, they are refracted so that their energy is concentrated around headlands but reduced around bays. Safe access points to the shoreline at several points around the edge. Emergent coastlines have emerged from the water; submergent coastlines have submerged below the water. Water quality and pollution management in the UK. discordant coastlines. Discordant coasts have a crenellated pattern of projecting headlands and indented bays. Erosion worsens as the waves becomes stronger. Where the rock outcrops run parallel to the sea. than in summer. 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. The processes have been operating over the last 8000 years. The coast is very young due to recent ice ages and resulting sea level change. Introduction to the location of the Delta. Jamaica Case Study, How can the growth of tourism reduce the development gap? Transportation is the movement of material from a coastline--such as sand and gravel--while deposition is the addition of material to a coastline. Coastlines where the geology alternates between strata (or bands) of hard rock and soft rock are called discordant. Sediment Cells. The UK's coastline is 31,368 km long (if you include all the main islands). 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. How far out to territorial waters extend from the coast (or baseline)? The discordant coastline runs from 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. Pinterest. 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. how to change text duration on reels. Bits of rock and sand that the waves have picked up are thrown against the cliff face. of the users don't pass the Coastlines quiz! It remains England's only natural World Heritage Site. Opportunities and Challenges in the Sahara Desert, Opportunities and Challenges in the Thar Desert, Opportunities and Challenges in the Western Desert. As the wave breaks, it carries material up the beach in its swash. Each process can produce several coastal features; however, they often work together to sculpt the coastlines. The process of erosion can create different landforms along the coastline. Paymaya Annual Report, Coastlines where the geology alternates between strata (or bands) of hard rock and soft rock are called discordant coastlines. 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. True or False: As sea levels rise, coastlines are likely to expand. There are four major types of coastlines: emergent, submergent, discordant, and concordant. What is a discordant coastline? The coast is the border between the land and the sea. A concordant coastline has the same type of rock along its. Additionally, hotter temperatures enable extreme weather events like hurricanes to occur more frequently. Concordant coastlines form coves, which are round areas of water that have narrow entries from the sea. The three major coastal processes include erosion, transportation and deposition. Weathering and mass movement in river valleys. Numerous plants and animals have adapted to live along coastlines. (For example the east of the Dorset coast) How Geology affects the coast . Paired spits formed parallel to the coast with haff lagoon behind at the mouth of the River Vistula in Gdansk. Coastlines where the geology alternates between bands of hard and soft rock which are perpendicular to the shore are called discordant coastlines. The concordant coastline runs from west to east along the south coast. The difference in rock types between discordant and concordant coastlines means that there are differences in erosion. Concordant coastline Uncordant coastline Variable coastline 8. https://commons.wikimedia.org/wiki/File:Lulworth.png. Beara Peninsula to the north formed from more resistant Devonian Old Red Sandstone and projects 35 km into the Atlantic Ocean. The water. A coastline is anywhere where the land meets the water. Assessment week 2 (WB 24th February 2020) - End of unit test - Physical landscapes of the UK. CAVES, ARCHES, STACKS AND STUMPS These are found on headlands where wave refraction means that erosion takes place on both sides of the headland. Large particles like boulders are pushed along the bottom of the river bed/sea by the force of the water. 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. 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. Waves move up and down there is no horizontal movement. Erosion worsens as the waves becomes stronger. Tectonic forces produced by the collision of African and Eurasian plates compressed Carboniferous Limestone during the Alpine Orogeny 50 million years ago.