Consider the following statements regarding the geographical regions of Rajasthan:
- The Aravalli mountain range is described as a 'Residual' mountain range.
- The term 'Residual' refers to the fact that the original folded structure has been eroded over geological time.
- The geological formation of the Meru (Aravalli) range dates back to the Post-Tertiary period.
Which of the statements given above are correct?
🌟 Quick Verification
- Direct Answer: The correct answer is 1 and 2 only.
- Core Concept: The term Residual Mountain implies an ancient mountain system that has been worn down by erosion.
🧠 Concept Blueprint
- Statement 1 & 2: True. The Aravallis are characterized as a 'residual' mountain because they were once much higher (folded) but have been significantly eroded over millennia.
- Statement 3: False. The Aravallis are Pre-Cambrian in origin, not Post-Tertiary. The Post-Tertiary era is more associated with the formation of the western desert (Maru) plains.
📊 Fact Spotlight
| Geological Feature | Terminology |
|---|---|
| Aravallis (Meru) | Pre-Cambrian, Residual |
| Himalayas | Tertiary, Young Fold |
| Vindhyas | Sedimentary, Folded (Dissected) |