Crossword clue: a thin layer or stratum of (especially metamorphic) rock
1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
a thin layer or stratum of (especially metamorphic) rock
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Similar clues
(especially of metamorphic rock) having thin leaflike layers or strata
56% similar
→ foliaceous, foliate, foliated