Anchimetamorphism
Definition
A geological process of incipient, very low-grade metamorphism that marks the transition between diagenesis (sediment consolidation) and regional metamorphism proper (greenschist facies); it occurs at relatively low temperatures and pressures, causing partial recrystallization of clay minerals without completely destroying the original sedimentary structures.
Bilingual Equivalents
- Anchimetamorphism
- Low-grade metamorphism
Grammatical & Source Details
| Inflection Type | Neuter scientific noun, regular abstract structural handling without common plural variations. |
| Formation | Scientific compound combining the Greek prefix 'anchi-' (near/close to) and the structural noun 'metamorphism'. |
| Spelling / Pronunciation | [aŋ.ki.me.ta.mor.ˈfism] |
| Source | Glossary of Metamorphic Petrology and Mineral Alterations |
Contextual Usage Examples
RO: Analiza microscopică a gresiei a relevat indicii clare de anchimetamorfism prin prezența ilitului bine cristalizat.
EN: Microscopic analysis of the sandstone revealed clear indications of anchimetamorphism through the presence of well-crystallized illite.
RO: Aceste roci sedimentare au suferit un anchimetamorfism indus de îngroparea lor la adâncimi medii în scoarță.
EN: These sedimentary rocks underwent an anchimetamorphism induced by their burial at medium depths within the crust.
RO: Studiul zonelor de anchimetamorfism ajută la determinarea istoriei termice a bazinelor petrolifere.
EN: The study of anchimetamorphism zones helps determine the thermal history of petroleum basins.
Idioms & Phrases
Zonă de anchimetamorfism / Anchimetamorphism zone
RO: Fâșie geologică (anchizonă) caracterizată prin transformări structurale limitate ale mineralelor sub acțiunea căldurii interne.
EN: A geological belt (anchizone) characterized by limited structural transformations of minerals under internal heat.
Facies de anchimetamorfism / Anchimetamorphic facies
RO: Asociație mineralogică specifică rocilor care au trecut prin stadiul de tranzit termic dintre sedimentar și metamorfic.
EN: A mineralogical association specific to rocks that have passed through the thermal transition stage between sedimentary and metamorphic.
Efect de anchimetamorfism / Anchimetamorphic effect
RO: Modificare fizico-chimică discretă a texturii rocilor argiloase, vizibilă doar prin difracție cu raze X.
EN: A discrete physicochemical modification of the texture of clayey rocks, visible only through X-ray diffraction.
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