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Glaciation in Snowdonia -

Glaciation in Snowdonia -. Some Post-Glacial Changes to the Landscape. Snowdonia – Post Glacial Changes. Post-glacial screes due to frost shattering on the slopes above. Snowdonia – Post Glacial Changes. Fluvial erosion has cut through the morainic deposits in Cwm Idwal.

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Glaciation in Snowdonia -

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  1. Glaciation in Snowdonia- Some Post-Glacial Changes to the Landscape

  2. Snowdonia – Post Glacial Changes • Post-glacial screes due to frost shattering on the slopes above.

  3. Snowdonia – Post Glacial Changes • Fluvial erosion has cut through the morainic deposits in Cwm Idwal.

  4. Snowdonia – Post Glacial Changes • Lakes have been infilled as shown by these lake deposits in the Nant Ffrancon valley.

  5. Snowdonia – Post Glacial Changes • Soils and vegetation have developed on both the bare rock and morainic surfaces left after the ice retreated.

  6. Grazing by sheep has resulted in a distinctive grassland flora; trees and heather only occur where sheep are unable to graze. Snowdonia – Post Glacial Changes

  7. Snowdonia – Post Glacial Changes • Footpath erosion is a problem in many popular sites.

  8. Snowdonia – Post Glacial Changes • Many paths have been paved, as in Cwm Idwal.

  9. Snowdonia – Post Glacial Changes • Where walkers keep to the path the surrounding vegetation is able to recover from erosion.

  10. Snowdonia – Post Glacial Changes • The small, old Cwm Dyli H.E.P. scheme has left a pipeline eyesore; The new scheme at Dinorwig is hardly visible.

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