käibevarve

Käibevarve are geological features that represent a rapid deposition of sediment, often associated with flood events or other energetic processes. The term "käibevarve" is of Estonian origin and literally translates to "flow varve." These deposits are characterized by a distinct layering, where coarser material is typically found at the bottom and finer material at the top, reflecting a decrease in energy over time.

These sedimentary layers can provide valuable information about past environmental conditions. By studying the thickness, composition, and structure of käibevarve, geologists can infer the intensity and frequency of depositional events, such as floods, debris flows, or storm surges. The analysis of käibevarve is particularly useful in reconstructing Holocene and Pleistocene paleoenvironments, especially in areas with a history of glaciations or significant fluvial activity.

Käibevarve are distinct from glacial varves, which are annual layers deposited in lakes or oceans influenced by glacial meltwater. While both are layered sediments, käibevarve are specifically linked to short-lived, high-energy depositional events rather than the seasonal cycles of glacial melt. The interpretation of käibevarve requires careful consideration of the local geological context and depositional environment.