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V-Shaped Valleys and Interlocking Spurs Back

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					       Aim: to know where on the rivers journey v-shaped valleys and interlocking spurs are found and how they are formed




                              LANDFORMS OF THE UPPER STAGE
                              V-shaped valleys and interlocking spurs




                                   V-SHAPED VALLEYS
                                   Are formed in the upper stage of the river. Here the river is eroding
                                   downwards into its bed and not sideways (laterally). This leads to a
                                   steep-sided valley. As this vertical erosion continues it weakens the
                                   valley sides and this plus weathering making the sides even steeper.




                                    INTERLOCKING SPURS
                                    The youthful river does not have a huge amount of energy in its upper
                                    stage. Therefore when it comes to obstacles such as large rocks,
                                    boulders and other areas of hard rock (i.e the valley sides) it twists
                                    around them. This creates interlocking spurs which look like the
                                    opposite sides of the valley fit together like a zip!




Common exam questions may ask you to:
    Mark these features on a diagram that they give you
    Explain how, where and why they form (perhaps asking you to draw labelled diagrams
    Say what type of erosion may be happening to create such landforms.

				
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Description: V-Shaped Valleys and Interlocking Spurs Back