árrések

Árrések are a type of geological formation. They are essentially vertical or near-vertical fissures or cracks that occur in rock formations. These fissures can form for a variety of reasons, most commonly due to tectonic stresses and the movement of the Earth's crust.

When tectonic plates shift or interact, immense pressure can build up within the rock. This pressure, if it exceeds the tensile strength of the rock, can cause it to fracture, creating these cracks. Árrések can vary greatly in size, from small hairline fractures to large, significant fissures that can extend for considerable distances.

Another factor contributing to their formation can be the erosion process, particularly by water. Over long periods, water seeping into existing small cracks can widen them through processes like freeze-thaw cycles, where water expands as it freezes, exerting pressure on the rock. This continuous action can gradually enlarge the fissures.

The presence of árrések can have implications for various fields. In geology, they are studied to understand past and present tectonic activity. They can also influence the flow of groundwater and the distribution of minerals. In civil engineering, understanding their presence is crucial when planning construction projects, as they can affect the stability of the ground.