glinkowych
Glinkowych is the genitive plural form of the Polish adjective glinkowy, meaning clayey or clay-rich. It is used to describe nouns in the genitive case, typically in phrases that indicate material composition or provenance. The base noun is glina, meaning clay. In Polish, adjectives agree with the nouns they modify in gender, number, and case; glinkowy has forms such as glinkowy (masculine singular), glinkowa (feminine singular), glinkowe (neuter or plural), and glinkowych (genitive plural). Therefore glinkowych appears in contexts where the noun it describes is in genitive, for example in the phrase warstwy glinowych osadów, meaning layers of clayey sediments.
Etymologically, glinkowy is built from glina plus the adjectival suffix -owy, a productive pattern in Polish
Common usages describe materials with substantial clay content or origin in clay-bearing environments. For instance, glinkowych