pelites

/ˈpiːlaɪts/
noun
  1. Plural of pelite; fine-grained sedimentary rocks composed mostly of clay or silt particles.
    • Under the microscope, the pelites showed layers of compressed clay minerals.
    • The region's pelites are rich in organic material, making them potential sources of oil.
    • Hikers often notice the smooth texture of pelites along the riverbank.
Synonyms
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