Question
Use the diagram below to answer the questions that follows.
(a) Identify the weathering process shown above.
(b) Describe how rocks are weathered through the above process.
(a) Identify the weathering process shown above.
(b) Describe how rocks are weathered through the above process.
Answer
a) Block disintegration
b)
- Occurs on rocks with joints and bedding planes found in areas with large diurnal range of temperature.
- During the day, the rocks are heated by the sun and expand.
- During the night, the temperature fall and the rocks are cooled as they contract.
- Expansion and contraction causes stress mainly along the bedding/joints leading to formation of cracks.
- Continued process causes the enlargement of the cracks.
- The rock eventually breaks down into smaller blocks.
b)
- Occurs on rocks with joints and bedding planes found in areas with large diurnal range of temperature.
- During the day, the rocks are heated by the sun and expand.
- During the night, the temperature fall and the rocks are cooled as they contract.
- Expansion and contraction causes stress mainly along the bedding/joints leading to formation of cracks.
- Continued process causes the enlargement of the cracks.
- The rock eventually breaks down into smaller blocks.
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