Kruusakiht

Kruusakiht, also known as the layer of gravel or coarse sediment, is a geological term that refers to a stratum or layer of rock or sediment composed primarily of gravel-sized particles. These particles range in size from 2 to 64 millimeters in diameter, according to the Wentworth scale, which is commonly used to classify sediment grains. The term "kruusakiht" is often used in the context of glacial and fluvial (river-related) deposits, where gravel is transported and deposited by moving water or ice.

The formation of a kruusakiht typically occurs during periods of high energy in the transporting medium, such as during glacial outwash or during high-flow events in rivers. The gravel particles are often rounded and well-sorted, reflecting the energy and distance they have traveled. Kruusakihts can be found in various geological settings, including alluvial fans, braided river deposits, and glacial moraines.

The study of kruusakihts is important in understanding past environments and processes, as well as in predicting the behavior of modern sedimentary systems. For example, the presence of a kruusakiht in a sedimentary sequence can indicate a period of high-energy flow, which may have implications for the interpretation of ancient climates or the assessment of modern flood hazards. Additionally, the characteristics of gravel particles within a kruusakiht can provide insights into the source area and the transport history of the sediment.