Vulkaniogeenisissa

Vulkaniogeenisissa is a Finnish term used in geology to describe phenomena, materials, or formations that originate from volcanic activity or are primarily shaped by volcanogenic processes. The term is the Finnish equivalent of the English volcanogenic, and is commonly used in stratigraphy, sedimentology, and ore-deposit studies to indicate volcanic origin or influence.

Geological contexts include tephra layers, volcanic ash beds, volcaniclastic sediments, ignimbrites, and other deposits produced by volcanic eruptions. In stratigraphic descriptions, vulkaniogeenisissa denotes that a unit's characteristics, such as mineralogy, grain size, or distribution, reflect emplacement by volcanic activity rather than purely sedimentary or tectonic processes.

Additionally, the term is used in reference to volcanogenic ore deposits, hydrothermal systems associated with volcanic activity, and other geologic features where volcanic inputs contributed to mineralization. It is often contrasted with purely volcaniclastic versus volcanogenic in origin; the precise usage depends on whether volcanic processes directly formed the feature or contributed to its formation.

Because it is specialized terminology, vulkaniogeenisissa appears mainly in Finnish geological literature and field notes. When translating to English, scholars typically use volcanogenic or volcaniclastic with qualifiers to specify sedimentary, metamorphic, or ore contexts.