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Examine the photographs of karst landscape features above and answer each of the following questions - Leaving Cert Geography - Question C - 2016
Question C
Examine the photographs of karst landscape features above and answer each of the following questions. (i) Name one surface karst feature evident in photograph A and... show full transcript
Worked Solution & Example Answer:Examine the photographs of karst landscape features above and answer each of the following questions - Leaving Cert Geography - Question C - 2016
Step 1
Name one surface karst feature evident in photograph A and explain, with the aid of a diagram, how this surface feature was formed.
Answer
One surface karst feature evident in photograph A is a 'Limestone Pavement'.
Explanation:
Limestone pavement is formed through the process of carbonation. Rainwater absorbs carbon dioxide from the atmosphere and soil, creating a weak carbonic acid that reacts with the limestone.
Diagram:
To illustrate, a diagram depicting the following aspects should be included:
- Limestone layers: Show the horizontal layers of limestone.
- Grike formation: Illustrate the cracks (grikes) that develop as the limestone erodes due to the acidic water, leading to the characteristic blocky appearance of the pavement.
This erosion creates a distinct landscape typical of karst regions.
Step 2
Name one underground karst feature evident in photograph B and explain, with the aid of a diagram, how this underground feature was formed.
Answer
One underground karst feature evident in photograph B is a 'Stalactite'.
Explanation:
Stalactites are formed from mineral-rich water dripping from the ceiling of a cave. As the water drips, minerals such as calcite precipitate and build up, creating the icicle-like formations over time.
Diagram:
A diagram should illustrate:
- Ceiling of a cave: Indicate where the water drips from.
- Stalactite growth: Show the gradual buildup of minerals as more water drips over time, highlighting how stalactites develop from this process.