Kerrostunutta

Kerrostunutta is a Finnish term used to describe something that has become layered or stratified. It is the past participle form of the verb kerrostua, meaning to form layers or strata. The word is most common in scientific and technical language, particularly in geology, soil science, and materials science, where it characterizes structures that display distinct layering.

In practice, kerrostunutta refers to rocks, sediments, or composite materials that show visible stratification. This can result from processes such as sedimentation, metamorphism, or repeated deposition and compaction. For example, you may encounter expressions like kerrostunutta sedimenttiä (layered sediment) or kerrostunutta kivilajetta (layered rock).

Grammatically, kerrostunutta is the partitive singular form of kerrostunut, the past participle of kerrostua. It is used in sentences where the noun it modifies is in the partitive or indefinite form, as in kerrostunutta sedimenttiä. The term functions as an adjective and can appear either attributively or in predicative-like constructions within Finnish grammar.

Related terms include kerrostua (to layer), kerrostunut (layered), and kerrostuneisuus (layering, lamination). The concept is closely linked to stratification and to descriptions of material structures that exhibit horizontal or subhorizontal layering.

See also: kerrostua, kerrostunut, stratification in geology.