Запомнить karst landscape начало

What is a karst landscape?

How is a karst landscape formed?

• Limestone is permeable (проницаемый) due to 3 reasons:

• has small holes that can hold water

• It is pervious

• Acid rain & easily weathered)

• It is porous

• has joints that allow water to pass thro

• Dissolved by a weak carbonic acid

How is a karst landscape formed?

• When...

• Calcium bicarbonate is soluble (dissolves in water) and is washed away in solution (Бикарбонат кальция растворим (растворяется в воде) и смывается в растворе)

Equation

Formation of carbonic acid:

Equation

Weathering of limestone:

Equation

Calcium bicarbonate:

Irish Karst

-- Burren, Co, Clare

• During last ice age, ​ (a)   ​ (b)   away ​ (c)   , exposing ​ (d)   underneath

  (Burren is Glacio-Karst - affected by glaciers)

• glaciers
• scraped
• topsoil
• limestone rock

Irish Karst

-- Burren, Co, Clare

• Two categories of features or landscapes created are:

Surface Feature - Limestone Pavement

What is limestone pavement?

(clints and grikes also)

Limestone pavement diagram

a

b

c

d

joints

grikes

bedding plane

clints