Ikkefoliasjon

Ikkefoliasjon, also known as non-foliation, is a geological term that describes the absence of foliation in a rock. Foliation is a planar structure that forms in rocks due to the alignment of minerals or grains under pressure. This can result in rocks that have a layered or banded appearance, such as schist or gneiss. In contrast, ikkefoliasjon refers to rocks that lack this planar structure. These rocks may appear more uniform and do not exhibit the same degree of layering or banding. Examples of ikkefoliasjon rocks include granite, which is composed of large, visible crystals, and basalt, which has a fine-grained, uniform texture. The absence of foliation in ikkefoliasjon rocks can be due to various factors, including the type of rock-forming minerals, the rate of cooling, or the lack of pressure during formation. Understanding ikkefoliasjon is important in geology for interpreting the history and conditions under which rocks were formed.