Authigenic
Definition
Said of minerals or sedimentary components that formed directly in situ, within the sediment or host rock, through processes of chemical precipitation, recrystallization, or diagenetic transformation, rather than being transported from elsewhere as pre-existing detrital material.
Bilingual Equivalents
- Authigenic
- Authigene
Grammatical & Source Details
| Inflection Type | Variable adjective with standard masculine, feminine, and structural plural variations. |
| Formation | Scientific compound borrowed via French, linking ancient Greek roots for self and origin. |
| Spelling / Pronunciation | [au.ti.ˈd͡ʒen] |
| Source | International Lexicon of Mineralogy and Sedimentary Petrology |
Contextual Usage Examples
RO: Cuarțul autigen s-a dezvoltat sub forma unor cristale microscopice perfecte în spațiile poroase ale gresiei.
EN: Authigenic quartz developed as perfect microscopic crystals within the porous spaces of the sandstone.
RO: Prezența unui mineral autigen oferă indicii prețioase despre condițiile chimice din bazinul de sedimentare.
EN: The presence of an authigenic mineral offers precious clues about the chemical conditions in the sedimentary basin.
RO: Geologii au analizat cimentul autigen calcaros care leagă granulele de nisip ale rocii fosilifere.
EN: Geologists analyzed the calcareous authigenic cement binding the sand grains of the fossiliferous rock.
Idioms & Phrases
Mineral autigen / Authigenic mineral
RO: Substanță cristalină formată direct în sediment în timpul diagenezei, cum ar fi glauconitul sau glauconia.
EN: A crystalline substance formed directly within the sediment during diagenesis, such as glauconite.
Ciment autigen / Authigenic cement
RO: Material mineral care precipită în porii unei roci sedimentare detritice, ducând la consolidarea acesteia.
EN: Mineral material that precipitates in the pores of a detrital sedimentary rock, leading to its consolidation.
Creștere autigenă / Authigenic growth
RO: Proces de dezvoltare cristalină in situ pe suprafața unor granule minerale preexistente.
EN: A process of crystalline development in situ on the surface of pre-existing mineral grains.
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