What does concordant coastline mean in geography?
A concordant coastline has the same type of rock along its length. Concordant coastlines tend to have fewer bays and headlands. Along the coastline of the Isle of Purbeck in Dorset, there are both discordant and concordant coastlines.
What does concordant coastline form?
Concordant coastlines form coves, which are round areas of water that have narrow entries from the sea. These coastlines may lead to the formation of either Dalmatia landforms or Haffs (also called lagoons). By contrast, when the rock strata are perpendicular to the coastline, the coast is referred to as discordant.
What happens on a concordant coastline?
A concordant coastline occurs where the bands of differing rock types run parallel to the coast. The outer hard provides a protective barrier to erosion of the softer rocks further inland. Sometimes the outer hard rock is punctured allowing the sea to erode the softer rocks behind.
What is the difference between a concordant and discordant?
A pair of observations is concordant if the subject who is higher on one variable is also higher on the other variable. A pair of observations is discordant if the subject who is higher on one variable is lower on the other variable.
What is coastal geology?
The Marine and Coastal Geology cluster group includes a diverse group of Earth scientists who work on the geological evolution of ocean basins extending from the coastal zone where most human interactions occur, to the active continental margins where oceanic plates are subducted and continental accretion occurs, to …
What is a concordant in geology?
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.
Is a concordant coastline parallel?
Concordant coasts usually form where rock strata or folds run parallel to the coast. Some concordant coasts have long, narrow islands running parallel to the coastline.
What is discordant in geography?
A discordant coastline occurs where bands of different rock type run perpendicular to the coast. The differing resistance to erosion leads to the formation of headlands and bays. The converse of a discordant coastline is a concordant coastline.
What is coastal landforms in geography?
Coastal landforms are the landforms along the coastline that are mostly formed by erosion and sediments from waves, longshore currents, rip currents, tides, and climatic factors like wind and rainfall, and temperature include headlands, cliffs, bays, spits, salt marshes, and beaches.
What is a coastal plain in geography?
A coastal plain is a flat, low-lying piece of land next to the ocean. Coastal plains are separated from the rest of the interior by nearby landforms, such as mountains. In the United States, coastal plains can be found along the Atlantic Ocean and the Gulf of Mexico. Coastal plains can form in two basic ways.
What does it mean to have a concordant coastline?
A concordant coastline is where the same rock runs along the length of the coast. Concordant coastlines tend to have fewer bays and headlands. Find out more about concordant coastlines.
Why are the rock bands on the coast concordant?
A concordant coastline occurs where the bands of differing rock types run parallel to the coast. The outer hard provides a protective barrier to erosion of the softer rocks further inland. Sometimes the outer hard rock is punctured allowing the sea to erode the softer rocks behind.
What causes the formation of concordant and discordant coasts?
Geological Structure is responsible for the formation of concordant and discordant coasts. Concordant coasts usually form where rock strata or folds run parallel to the coast. Some concordant coasts have long, narrow islands running parallel to the coastline.
What does the term discordant coastline stand for?
Discordant coastline. A discordant coastline occurs where bands of differing rock type run perpendicular to the coast.