Chalk Group Lithostratigraphy: Northern England - First Main Flint: Revision history

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10 October 2013

  • curprev 12:1512:15, 10 October 2013Dbk talk contribs 762 bytes +762 Created page with "This bed comprises closely spaced nodular flints with a complex morphology, and locally may appear as a semicontinuous flint extending for a metre or more laterally (Gaunt ''e..."