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Rift vally formation . #oxfordgeography #ras2019 PEN POINT

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Rift Valley formation a Rift Valley is

formed as a result of the sinking of a

portion of the crust between cracks on

the surface of the earth there are three

stages in the formation of a Rift Valley

stage one layers of rock are subject to

tension or stress

Stage two Falls or cracks develop in the

layers and the central block begins to

subside stage 3

after subsidence a depression with steep

sides is formed this is a Rift Valley

you can make your own Rift Valley using

a longer racer take a longer racer and

use a pencil to draw fault lines on it

use a cutter or blade to cut the eraser

across the lines drawn earlier place the

pieces of the long eraser together to

make the eraser hole again apply a

little pressure on the corner pieces and

lift the whole eraser above the table

slowly pull the corner pieces apart and

you can see how the land in the middle

of false lines subsides and a rift

valley is formed the Great Rift Valley

of Africa is a special physical feature

of the southern plateau

it is a long narrow valley formed as a

result of vertical cracks that developed

because of the movements within the

earth it extends for a total distance of

five thousand kilometers from Lake

Malawi through the Red Sea and the Gulf

of Aqaba to the Dead Sea in Jordan

many freshwater lakes like Malawi

Rudolph Tanganyika are found here

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