📘 Geography Optional – Paper I
Page 4 – Structural Geomorphology
Q1. What is Structural Geomorphology? Explain its significance. (10 Marks)
Introduction: Structural geomorphology studies landforms influenced by geological structures.
- Rock type
- Folding
- Faulting
- Jointing
Significance: Determines relief, drainage pattern, and mineral distribution.
Q2. Explain the formation of Fold Mountains. (15 Marks)
- Compressional forces
- Anticlines & Synclines
- Orogenic movements
Examples: Himalayas, Alps.
Q3. Differentiate between Fault and Rift Valley. (10 Marks)
| Fault | Rift Valley |
|---|---|
| Crack with displacement | Depressed block between faults |
| May form escarpments | Forms long narrow valley |
Q4. Describe Block Mountains and Horst formation. (15 Marks)
- Tensional forces
- Upthrown blocks
- Examples: Black Forest (Germany)
Q5. Explain the role of lithology in landform development. (15 Marks)
- Hard rocks → Ridges
- Soft rocks → Valleys
- Differential erosion
Q6. What are Cuestas and Hogbacks? (10 Marks)
- Cuesta – Gentle dip slope & steep scarp
- Hogback – Steeply inclined ridge
Q7. Explain the concept of Drainage Pattern and Structural Control. (15 Marks)
- Trellis pattern
- Rectangular pattern
- Radial pattern
Structure strongly influences river course.
Q8. Discuss the impact of tectonics on geomorphology. (15 Marks)
- Earthquakes
- Mountain building
- Plate movements
- Volcanism
Q9. Compare Fold Mountains and Block Mountains. (10 Marks)
| Fold Mountains | Block Mountains |
|---|---|
| Compression | Tension |
| Anticlines & Synclines | Horst & Graben |
Q10. Explain the concept of Geomorphic Cycles and Structural Influence. (15 Marks)
- Davisian cycle
- Penck’s theory
- Structural resistance modifies cycle
📊 Page 4 Complete | Total Questions So Far: 40 / 1000
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