Chalk Group Lithostratigraphy: Northern England - Ferruginous Flint: Revision history

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10 October 2013

  • curprev 13:1813:18, 10 October 2013‎ Dbk talk contribs‎ 784 bytes +784‎ Created page with "This is a semitabular flint, up to 0.18 m thick (Wood & Smith, 1978), with pyrite-coated fracture surfaces, the oxidation of which produces a distinctive red or orange colour ..."
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