Panplane Definition and Formation
A panplane is a geological term referring to a relatively flat, extensive surface. It is specifically formed by the process of joining together multiple flood-plains.
Understanding Panplane Formation
The formation of a panplane involves the lateral extension and coalescence of individual flood-plains over time. As rivers meander and deposit sediment, their floodplains widen. When these adjacent floodplains merge, they create a larger, low-relief, level surface known as a panplane.
Distinguishing Panplanes from Other Surfaces
- Option 1 (Wind erosion): Surfaces formed by wind erosion are typically called desert pavements or deflation hollows, not panplanes.
- Option 3 (Fluvial cycle at old age): While the fluvial cycle does create level surfaces (like peneplains in old age), a panplane specifically relates to the joining of flood-plains, a particular mechanism of fluvial deposition.
- Option 4 (Human intervention): Surfaces created by humans (e.g., agricultural fields, leveled construction sites) are artificial and distinct from natural geological formations like panplanes.
Therefore, the most accurate description relates to the joining of flood-plains.
Important Questions from Geomorphology
Which one of the following is not an igneous rock?
Which of the following statements is/are correct?
1. Hypocenter is the point on the surface of the Earth, nearest to the focus.
2. Velocity of earthquake waves is higher in denser materials.
3. P waves move faster and are the first to arrive at the surface of the Earth.
Select the correct answer using the code given below:
Which one of the following is the lowermost/innermost intrusive igneous rock?
The formation of ‘tors’ on small rocky hills is associated with which among the following?
Which one of the following statements about metamorphic rocks is not correct?
