Chert-Shale-Mudstone
Chert-Shale-Mudstone
Chert-Shale-Mudstone
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<strong>Shale</strong> and <strong>Mudstone</strong>Fissile black, organic-rich shale.Kimmeridge Clay, Jurassic.Yorkshire, England.Massive, non-laminatedmudstone with concoidalfracture. Lower Carboniferous.Wales, UK.(From Tucker, 1996)8