lammonsiirtostruktuurit

Lammonsiirtostruktuurit, often translated as "lamella transfer structures" or "sheet transfer structures," refer to a specific type of geomorphological feature found in certain glacial landscapes. These structures are characterized by the deposition of sediment in thin, elongated, and relatively flat layers, known as lamellae. They are typically formed by meltwater streams that flow over or beneath glaciers.

The formation process involves the entrainment and transport of sediment by glacial meltwater. As the water loses energy, it deposits the sediment in successive thin layers. The lamellar nature is a result of the flow dynamics and the availability of fine-grained material. These structures can occur in various settings, including proglacial outwash plains, ice-marginal areas, and within glacial valleys.

Lammonsiirtostruktuurit are often associated with areas of low gradient where meltwater flow is relatively steady. They can be indicative of specific meltwater flow regimes and sediment transport processes. The interpretation of these structures can provide valuable insights into the past glacial environment and the dynamics of glacial meltwater systems. They are distinct from other glacial depositional features such as moraines or eskers due to their characteristic thin, sheet-like layering. Their study contributes to the broader understanding of glacial sedimentology and stratigraphy.