Rock types and landscapes

361 views
251 views

Published on

Rock types and the landscapes they can create. For Leaving Certificate Geography (Ireland)

Published in: Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
361
On SlideShare
0
From Embeds
0
Number of Embeds
5
Actions
Shares
0
Downloads
11
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Rock types and landscapes

  1. 1.  ¼ of the world’s population live in Karst areas (most of this ¼ is found in China)  Formed by Chemical weathering (from rainwater) and erosion
  2. 2.  Lack of rivers/lakes  Presence of Swallow Holes – where water disappears underground  Presence of hollows – dolines  Presence of underground water (in caves)
  3. 3.  Limestone is permeable (water can pass through)  Well jointed (vertical “gaps”)  Has bedding planes (horizontal “gaps” between layers)  Easily chemically weathered
  4. 4.  Many cave features are formed by Deposition  Rainwater (slightly acidic from the CO2 in the air) dissolves Calcium Carbonate in Limestone.  The dissolved Calcium Carbonate (called Calcite) is deposited in caves
  5. 5.  Important source of water – many springs in Limestone areas.  Ballygowan water – from limestone area in Limerick
  6. 6.  Very important for tourism ◦ Caves are tourist attractions (e.g. Ailwee Cave) ◦ Unique landscape ◦ Planning restrictions mean landscape is kept unspoilt – no housing estates/McDonalds/Shopping centres allowed ◦ Historic features
  7. 7.  Unique Ecosystem…. Unusual plants and animals
  8. 8.  Engineering difficulties ◦ Caves may collapse ◦ Industrial Development Restricted ◦ Problems with fresh water contamination due to permeable nature of landscape – fertiliser, sewerage etc can easily contaminate drinking water supplies ◦ Agricultural development restricted – farming is difficult

×