Aleurolite
Definition
A consolidated detrital sedimentary rock formed through the cementation and diagenesis of aleurite (fine mineral dust, chiefly quartzous). The dimensions of its component grains are intermediate between those of sandstones and argillites, ranging from 0.002 to 0.06 millimeters. It often exhibits fine stratification and is used in geology to reconstruct ancient fossil or lacustrine sedimentary environments.
Bilingual Equivalents
- Aleurolite
- Siltstone
Grammatical & Source Details
| Inflection Type | Neuter noun with regular plural forms, utilized systematically in geological maps. |
| Formation | Scholarly compound derived from the combining form 'aleuro-' and the suffix '-lite' originating from Greek 'lithos' (stone). |
| Spelling / Pronunciation | [a.leu.ro.ˈlit] |
| Source | International Compendium of Lithological Names and Stratigraphy |
Contextual Usage Examples
RO: În aflorimentul analizat, stratul de aleurolit alternează ritmic cu benzi subțiri de argilă cenușie.
EN: In the analyzed outcrop, the aleurolite layer alternates rhythmically with thin bands of grey clay.
RO: Inginerul geotehnician a avertizat că acest aleurolit compact devine friabil atunci când este expus prelungit la umiditate.
EN: The geotechnical engineer warned that this compact aleurolite becomes friable when exposed to moisture for prolonged periods.
RO: Fosilele de plante s-au conservat remarcabil de bine datorită granulației extrem de fine din matricea de aleurolit.
EN: Plant fossils were remarkably well preserved due to the extremely fine grain size within the aleurolite matrix.
Idioms & Phrases
Aleurolit argilos / Argillaceous aleurolite / clayey siltstone
RO: O varietate mixtă de rocă sedimentară în care praful de cuarț este combinat cu un procent ridicat de minerale argiloase.
EN: A mixed variety of sedimentary rock where quartz dust is combined with a high percentage of clay minerals.
Stratificare de aleurolit / Aleurolite bedding / siltstone stratification
RO: Dispunerea în straturi subțiri și paralele a acestor roci, reflectând modificările sezoniere ale curentului de apă din bazin.
EN: The arrangement of these rocks in thin, parallel layers, reflecting seasonal changes in the basin's water current.
Ciment de aleurolit / Aleurolite cement
RO: Substanța minerală secundară (calcitică sau silicioasă) care leagă granulele fine transformându-le în rocă coerentă.
EN: The secondary mineral substance (calcitic or siliceous) that binds the fine grains together, transforming them into a coherent rock.
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