Karst Landscapes – Irish Karst (Leaving Cert Geography): Flashcards
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Definition of karst
Definition of karst
Exposed limestone area shaped by chemical weathering (carbonation)
Origin of term 'karst'
Origin of term 'karst'
Limestone region in Slovenia, Adriatic coast
Chemical weathering process forming karst
Chemical weathering process forming karst
Carbonation
3 reasons limestone is permeable
3 reasons limestone is permeable
Porous, pervious, dissolves in carbonic acid
Equation: carbonic acid formation
Equation: carbonic acid formation
H₂O + CO₂ = H₂CO₃
Equation: limestone weathering
Equation: limestone weathering
CaCO₃ + H₂CO₃ = Ca(HCO₃)₂
Two main Irish karst regions
Two main Irish karst regions
Burren (Co. Clare) & Marble Arch (Co. Fermanagh)
Definition of glacio-karst
Definition of glacio-karst
Limestone landscapes affected by glaciation
Clints and grikes
Clints and grikes
Limestone blocks separated by deep joints in pavement
Definition of percolation
Definition of percolation
Movement of water through pores & holes in rock
What are karrens?
What are karrens?
Small hollows on clints formed by carbonation
Definition of swallow hole
Definition of swallow hole
Funnel hole where river flows & disappears underground
Alternative name for swallow holes
Alternative name for swallow holes
Sluggas
Point of resurgence
Point of resurgence
Where river reappears after flowing underground