Argillite

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neuter noun (geology / petrography)

Definition

A compact argillaceous sedimentary rock, structurally formed through the diagenesis and deep cementation of clay muds, characterized by a higher hardness than simple clay and by the absence of fissility or the ability to split into thin sheets (unlike clay shales). In a geological sense, argillite represents an intermediate stage of metamorphism between soft pelitic sedimentary rocks and crystalline clay shales.

Bilingual Equivalents

  • Argillite
  • Mudstone

Grammatical & Source Details

Inflection Type Neuter noun, regular structural plural variations with standard case endings.
Formation Scientific neologism structurally assimilated from French 'argilite' or English 'argillite', built upon the root 'argilă' using the mineralogical suffix '-ite'.
Spelling / Pronunciation [ˈɑːrdʒɪlaɪt] / [ar.dʒi.ˈlit]
Source International Compendium of Sedimentary Petrology and Rock Layer Metrics

Contextual Usage Examples

RO: Analiza de laborator a arătat că acest argilit conține un procent ridicat de cuarț microcristalin și mice fine.

EN: Laboratory analysis showed that this argillite contains a high percentage of microcrystalline quartz and fine micas.

RO: Stratul masiv de argilit interceptat în timpul forajului geotehnic acționează ca o barieră impermeabilă structural.

EN: The massive layer of argillite intercepted during geotechnical drilling acts as a structurally impermeable barrier.

RO: Datorită structurii sale compacte și izotrope, acest tip de argilit a fost utilizat istoric de sculptori pentru realizarea ornamentelor.

EN: Due to its compact and isotropic structure, this type of argillite was historically used by sculptors to create ornaments.

RO: O faleză formată din argilit este mult mai rezistentă la eroziunea valurilor decât un versant argilos simplu.

EN: A cliff formed of argillite is much more resistant to wave erosion than a simple clay slope.

Idioms & Phrases

Strat de argilit / Argillite stratum layout

RO: Formațiune geologică masivă creată prin compactarea sedimentelor fine sub presiuni mari de supraîncărcare.

EN: A massive geologicalformation created by compacting fine sediments under high overburden pressures.

Argilit negru / Black argillite shale variant

RO: Varietate litologică bogată în materie organică carbonizată, studiată frecvent ca indicator pentru bazinele petrolifere.

EN: A lithological variety rich in carbonized organic matter, frequently studied as an indicator for petroleum basins.

Matrice de argilit / Argillite rock matrix

RO: Structură granulară fină și cimentată silicios care leagă elementele componente clastice în masa rocii sedimentare.

EN: A fine, silicously cemented granular structure binding the clastic component elements within the sedimentary rock mass.

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