Swilla Glen [SD 694 737]

As we walk into Swilla Glen the channel form of the River Twiss changes dramatically.

Use the cursor to navigate along the channel and use the zoom-in function to look at the bed load in detail.

  • Which way is the river flowing?
  • What is your evidence for this?
  • How fast is the water flowing in comparison with the panorama of River Twiss?
  • Suggest reasons for the reduced flow velocity.
  • The water here is clear (you can see the bed load) but a rusty brown colour. Give reasons for this.

Focus on the entrance to the gorge at the most northerly section of the panorama. Zoom in on this striking feature.

  • Why is there such a drastic change in channel form in this area?


In the eastern river bank Carboniferous rocks are exposed.

  • What colour are they?
  • What does this suggest about the rock type? [Further clues: these rocks ‘fizz with acid’ and often contain fossils].


Identify the rock bedding planes. These are the ‘lines’ you see in the outcrop.

  • Are the rocks dipping upstream or downstream?
  • What is the angle of dip?

 

Panorama

Hold down left button and move mouse to control panorama. Clicking on the + or - at the bottom of the movie will zoom in or out

 

 



Page last modified by Martin Lloyd on 21 September 2010.
 
LJMU Logo banner imageLJMU Logo banner image (print)
LJMU banner image
LJMU Dream, Plan Achieve - Page ID:96178