stylolite

/ˈstaɪləlaɪt/
noun
  1. An irregular, tooth-like seam or surface found in some sedimentary rocks, formed by pressure dissolution.
    • Stylolites often form perpendicular to the direction of greatest pressure.
    • The stylolite appeared as a dark, wavy line in the rock face.
    • Geologists identified a stylolite running through the limestone layer.
Synonyms
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