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Geo chapter 11 some

QuestionAnswer
Figure 11.16 How a drumlin is formed Drumlins Drumlins are oval-shaped hills made of boulder clay. Drumlins usually occur in clusters, forming what is called a 'basket of eggs' landscape. Examples of drumlins: Clew Bay in Co. Mayo and Strangford Lough in Co. Down.
drumlin formation Formation: · A drumlin forms when a glacier deposits mounds of boulder clay. . The glacier then continues its journey and smooths the boulder clay as it moves over it.
drumlin formatiom . The steep slope or stoss end of the drumlin shows us what direction the glacier was coming from. The gentle slope or lee slope shows us what direction the glacier was travelling in.
drumlin eg Drumlins usually occur in clusters, forming what is called a 'basket of eggs' landscape. Examples of drumlins: Clew Bay in Co. Mayo and Strangford Lough in Co. Down.
moraine Moraines A moraine is the name given to the material transported and later deposited on the valley floor by a glacier.
MF Formation: . As a glacier travels through a valley, it drops off some of the material that it has eroded from the upper slopes at either side of the glacier. .
MF2 This deposit is known as a lateral moraine. It is a ridge of material at the sides of the valley. When two glaciers meet, the lateral moraines of each glacier also meet, creating a medial moraine. .
MF Material is also moved along and deposited underneath a glacier. This is called the ground moraine. ·Finally, when a glacier stops moving, a ridge, made up of the material that it was pushing in front of it, is deposited.
MF3 Other ridges of deposited material are found behind the terminal moraine and are called end moraines. This material is called a terminal moraine. It tells us where the glacier ended. . .
MF4 Other ridges of deposited material are found behind the terminal moraine and are called end moraines.
ESKERS Eskers An esker is a long, narrow ridge of sand and gravel that winds its way along a lowland landscape.
EF 1 Formation: . When a glacier begins to melt, streams of meltwater carrying a load of eroded material flow through a tunnel that is carved out under the glacier. .
EF 2 When the load becomes too great, some material is deposited on the bed of the meltwater stream. . T .
EF3 he stream loses its energy when it exits the tunnel and it deposits the remainder of its load. This forms a ridge of sand and gravel on the surrounding plain.This ridge is known as an esker.
EF4 Roads have been built on eskers in many areas as they provide good foundations.Example of an esker: Esker Riada in Co. Galway.
Created by: user143
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