#argilo

• Aluminite form — Feminine form or rare terminological variant for the mineral 'aluminite'; also, in some obsolete technical works, it designated a sedimentary or clay rock heavily impregnated with aluminum compounds.
• Anchimetamorphism — 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.
• Argillite — 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.
• Argillization — The act of argillizing and its result; a process of exogenous or hydrothermal alteration through which silicate minerals in rocks decompose and transform into clay minerals. In geotechnics, this structural phenomenon represents a degradation of soil or rock quality, leading to increased plasticity, impermeability, and risk of landslides.
• Argilo- — A learned combining form (prefixoid) derived from the Latin 'argilla' (clay), used in international scientific terminology to form words related to clay, loam, or silico-aluminous minerals (e.g., argillosol, argillo-arenaceous). As an autonomous form in modern granulometric classifications, it indicates a significant presence of fine pelitic particles within a specific sedimentary mixture, granting plastic and water retention properties.
• Argilloid — Having the appearance, texture, or colloidal properties of clay without being a pure clay from a mineralogical standpoint; a synthetic or natural material or aggregate that mimics the plastic structure of clay. In a geological sense, it describes partially weathered minerals or silicates that have developed a fine consistency and a temporary capacity for reversible hydration resembling clay.
• Argillolite — A consolidated argillaceous sedimentary rock, structurally formed through the cementation, compaction, and deep dehydration of fine pelitic deposits (clay muds); a fine argillaceous sandstone or mudstone rock. In a geological sense, argilolitul is characterized by a massive texture, compact mass, and the absence of obvious fissility, representing a stable lithostratigraphic unit used in sedimentary basin analysis.
• Clayey — Containing a significant amount of clay, possessing its specific properties, or structurally resembling loam; refers specifically to soils, minerals, sedimentary rocks, or sticky impermeable substrates. In pedology, it describes a heavy, compact earth with high plasticity when wet, which retains water but becomes extremely rigid and cracked during periods of drought.
• Argillotrophic — Developing in or specific to aquatic environments (especially lakes or ponds) rich in fine clay suspensions and colloidal clay, which block light penetration and limit subaquatic flora growth. In a structural ecological sense, it describes water basins with low primary biological productivity due to persistent mineral turbidity, but adapted for certain benthic micro-organisms.
• Argilotrophy — A type of nutrition or mineral ecological regime of higher plants or soil microorganisms that structurally relies on the absorption of nutrients and water stored directly within clay-humus complexes. In a pedological and physiological sense, the term describes the capacity of certain plant species to efficiently extract exchangeable cations (calcium, magnesium, potassium) bound to the crystalline lattice surfaces of silico-aluminous minerals in heavy clay soils.