What is the difference between a discordant and concordant coastline They are more common in . Wave refraction involves waves breaking onto an irregularly shaped coastline, e.g. More resistant strata erode only slowly, and are left projecting into the sea as headlands. Assessment week 2 (WB 24th February 2020) - End of unit test - Physical landscapes of the UK. Where the rock outcrops run parallel to the sea. As Thor says, not bad at all. A combination of geological structure and sea level riseproduces the morphology of landforms aligned parallel to the coastline. This means that these waves transport beach material back into the sea, lowering the height of a beach. Caves, arches, stacks and stumps Weathering and erosion can create caves, arches, stacks and stumps along a headland. Discordant coastlines - where the rock layers alternate between harder and softer rock, which bays and headlands are more likely . How is demand for energy changing in the UK? This lesson was designed initially for an interview, and worked really well for a 50 minute lesson duration. Meanwhile on concordant coastlines, where layers of rock run parallel to the coastline, cliffs are much more dominant. Set individual study goals and earn points reaching them. This process happens over thousands of years. The Isle of Purbeck, in Dorset, is an example of where a concordant and discordant coastline exist very close to one another. Hydraulic action, attrition, abrasion, and corrosion. As the wave breaks, it carries material up the beach in its swash. 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. The Earth has around 620,000 kilometres (390,000 mi) of coastline. However, overall, access to a coastline can grant a country food supplies and economic resources that land-locked countries cannot acquire without trade. The geology of the Isle is complex. As it does so continually, the hard rocks resist erosion resulting in the protection of the soft rocks. 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. Worksheets with answers provided that guide students through sequencing each landform with the emphasis on process detail and geology. While not every UN member has ratified UNCLAS, most nations abide by it anyway. Many of these types of coastlines were actually formed toward the end of the Last Glacial Period (LGP). The differing resistance to erosion leads to the formation of headlands and bays. What is the location and importance of Mumbai? 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. A combination of geological structure and sea level riseproduces the morphology of landforms aligned parallel to the coastline. 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. Type # 1. . 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). If the direction of the classification is not the same . Start studying BBC Geography Bitesize: Coastal Processes. However, when the hard rocks punctured by either faults or ridges, inland soft rocks yield to erosion. False! pg. Historic records indicate that over 250 m of land were lost between 1600 and 1850. 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. Dorset coastline - Coastal landforms - AQA - BBC Bitesize The site is self-funded and your support is really appreciated. In 2001 it was inscribed as a World Heritage Site by UNESCO for the outstanding universal value of its rocks, fossils and landforms. Which of the following is NOT a major process through which waves shape the coast? What is the highest point of a wave called? The Isle of Purbeck, in Dorset, is an example of where a concordant and discordant coastline exist very close to one another. Where are polar and tundra environments located? Discordant These are where rock strata or structures are aligned at an angle to the coastline. 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. What is Nigerias location and importance? Fig. The part of the wave in the deeper water moves forward faster causing the wave to bend. How do changes affect the balance of an ecosystem? 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). Gcse Geography Revision. Coastlines are very important to people because they have many uses, but mankind is also placing coastlines under severe threat. Create beautiful notes faster than ever before. 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. Wave cut platforms as illustrated in the diagram and shown in the photograph are remnants of the previous cliff line. Corrosion is also known as solution. It is also known as Pacific type coastline, longitudinal coastline, or Dalmatian coastline. 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. North of Swanage, the chalk outcrop creates the headland which includes Old Harry Rocks. The swash of a destructive wave is much weaker than its backwash. The coast is very young due to recent ice ages and resulting sea level change. 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. Dip is the angle of inclination of titled strata. As our Earth warms, glaciers melt, causing the sea level to rise. The process begins with seawater hitting on the coastline. Coastlines with the same type of rock along its length tend to have fewer features ad are called concordant coastline. A concordant coastline has the same type of rock along its. Bull's Head in St Oswald's Bay. Emergent coastlines have emerged from the water; submergent coastlines have submerged below the water. In the Holocene Interglacial constructive waves pushed the ride of sands and gravel landwards as sea levels rose. As the wave approaches the coast, it gains height and drops onto a steep beach. 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! Meltwater rivers on land beyond the ice front deposited thick layers of sand and gravels onto outwash plains (sandurs). A ria coast hosts multiple rias. Originally a band of resistant Portland . They are most common where fetchis short. The Dalmatian type, named from Dalmatia on the Adriatic Sea, features long offshore islands and coastal inlets that are parallel to the coastline. (For example the south or the Dorset coast) . GCSE Geography Coastal landscapes in the UK learning resources for adults, children, parents and teachers. - Due to the presence of soft and hard rock, differential erosion occurs, with the soft, less resistant rock (e.g. The time wind takes to blow, wind speed and the fetch (distance the sea has covered) influence wave sizes. The updated BBC Bitesize website has a great video on . A discordant coastline occurs where bands of different rock type run perpendicular to the coast. Over time, waves beating against the shore will wear it down (or erode it). Fetch length along with the wind speed (or strength) determines the size of waves produced. The differing resistance to erosion leads to the formation of headlands and bays. Introduction to the location of the Delta. Learn about and revise coastal landforms, whether caused by erosion or deposition, with GCSE Bitesize Geography (OCR). 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. These will be exam question style ranging from 4, 6 and 9 mark questions. caused by the shrinkage of igneous rock as it cools. Create the most beautiful study materials using our templates. Students will learn about the different types of erosion at the coast and will be able to explain how they create coastal landforms. Describe the characteristics of destructive waves (3) Coasts - Grade Booster. Tectonic forces produced by the collision of African and Eurasian plates compressed Carboniferous Limestone during the Alpine Orogeny 50 million years ago. The Early Cretaceous, sometimes known as Lower Cretaceous, is the period stretching from 145 million years ago to 100.5 million years ago. Touch device users . B Gradually the . Approximately 40% of all people live within 100km of a coastline. The Portland limestone is resistant to erosion; then to the north there is Swanage Bay where the rock type is a softer greensand. Coasts can be classified in a variety of . Discordant and concordant coasts in Dorset. Watch popular content from the following creators: ambs(@aambersaunders), Revision(@lastminstudies), - (@alevelhelp.32), GCSE revision 2022(@revision.2022), BBC Bitesize(@bbcbitesize), Revision(@lastminstudies), Revision . Geology. A concordant coastline is where the same rock runs along the length of the coast. A combination of geological structure and sea level riseproduces the morphology of landforms aligned parallel to the coastline. The UK's coastline is 31,368 km long (if you include all the main islands). coastlines. Bits of rock and sand that the waves have picked up are thrown against the cliff face. How has urbanisation helped Nigeria to develop? A concordant coastline. Importance of the Delta for the region. These act as agents of erosion because their . 1. Some concordant coasts have long, narrow islands running parallel to the coastline. The process of erosion can create different landforms along the coastline. Coastal. What are the effects of deforestation in the Amazon? Geology. . Little Hilbre Island (Cheshire) by Google Earth / ESRI, Imagery 2016 Getmapping plc, Map data 2016 Google. These act as agents of erosion because their backwashis greater than their swah. Identify your study strength and weaknesses. Wave diffraction happens when the narrow opening to the cove causes the waves to bend, creating an arc shape wave. Teacher. In 2001 it was inscribed as a World Heritage Site by UNESCO for the outstanding universal value of its rocks, fossils and landforms. What factors affect population density and distribution? What are the economic and environmental issues of energy production? Taking the low-water line along the coast (or, the baseline), UNCLAS put forth the following: Special exceptions apply to areas like straits, where ships can't help but pass through territorial waters. The following are facts about constructive waves. The coast is the border between the land and the sea. Wave cut platforms as illustrated in the diagram and shown in the photograph are remnants of the previous cliff line. Practice Questions: Slideshow 2773107 by chanel Coasts Revision Booklet. The sea attacks a weakness in the base of the cliff. Touch device users . What are the causes of deforestation in the Amazon? Secondly, erosion of concordant coastlines results in the formation of coves while the erosion of discordant coastlines results in headlands and bays. Protection of cold environments as wilderness areas. (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. GCSE Geography | Coastline Features Caused by Coastal Erosion 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. Ria coastlines are a type of submergent coastline, but Dalmation landforms are associated with concordant coastlines. Learn about and revise coastal landforms, whether caused by erosion or deposition, with GCSE Bitesize Geography (AQA). Correct! Their wavelength is .and a.. frequency (8-10 waves per minute). Shake Hands With Beef Girl, -Erode the coast-Short wave length, high and steep. What Is A Concordant Coastline? - WorldAtlas Chesil Beach in Dorset was formed this way. Caves, Arches, Stacks and Sumps 3. lulworth cove concordant coastline. 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. It has a discordant coastline along the east and concordant coastline along the south. The Jurassic Coast is a hugely diverse and beautiful landscape underpinned by incredible geology of global importance. concordant and discordant coastlines 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. pptx, 1.58 MB. 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. 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.
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