The concept of 'Panplain' was propounded by
Crickmay
Understanding the Panplain Concept in Geomorphology
The question asks about the individual who introduced the geomorphological concept of 'Panplain'. This concept is related to the study of landforms and the processes that shape them over geological time.
What is a Panplain?
In geomorphology, a panplain is a vast, gently undulating plain formed by the coalescence of multiple pediplains. Pediplains themselves are formed through the process of pediplanation, which involves parallel retreat of slopes.
Think of it as several broad, low-relief areas merging together to create an even larger plain. This contrasts with other concepts like a peneplain, which is formed by the wearing down of a landmass to near sea level.
Who Propounded the Panplain Concept?
The concept of the panplain is specifically associated with the geomorphologist:
- Crickmay
L.W. Crickmay proposed the panplain concept as part of his work on landform development, distinguishing it from other erosional plains.
Analyzing the Options
Let's look at the other options provided and their relevance to geomorphology:
- Swinerton: While a geomorphologist, Swinerton is not primarily associated with the panplain concept.
- Johnson: Douglas Wilson Johnson was a prominent geomorphologist known for his work on shorelines and fluvial geomorphology, but not the panplain concept.
- Davis: William Morris Davis is famous for his "cycle of erosion" and the concept of the peneplain, which is different from a panplain.
- Crickmay: As discussed, L.W. Crickmay is credited with introducing the panplain concept.
Therefore, based on the origins of geomorphological concepts, Crickmay is the correct proponent of the panplain idea.
Revision Table: Key Geomorphological Concepts
| Concept | Description | Propounded By |
|---|---|---|
| Peneplain | A low-relief plain formed by the end stage of the cycle of erosion (wearing down). | W.M. Davis |
| Pediplain | A gently sloping erosional plain formed by parallel retreat of slopes. | L.C. King |
| Panplain | A plain formed by the coalescence of several pediplains. | L.W. Crickmay |
Additional Information: Geomorphic Cycles
The concepts of peneplains, pediplains, and panplains are often discussed within the context of geomorphic cycles, which describe the evolution of landscapes over time through the interplay of erosional and tectonic processes.
- Davisian Cycle: Focuses on the wearing down of a landscape (producing peneplains).
- Pediplanation Cycle (L.C. King): Emphasizes parallel retreat of slopes and the formation of pediplains.
- Crickmay's Contributions: Crickmay's work often provided alternative explanations or refinements to existing models, including the concept of panplains as a specific outcome of landscape evolution involving pediplanation processes.
Understanding these different concepts helps in analyzing the diverse erosional landforms found across the Earth's surface.
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