Chalk Group Lithostratigraphy: Northern England - High Stacks Flint: Revision history

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11 October 2013

  • curprev 11:4711:47, 11 October 2013Dbk talk contribs 776 bytes +776 Created page with "This is the highest true flint in the Chalk Group of northern England, and marks the top of the Burnham Chalk Formation and the top of the Lower ''Hagenowia rostrata'' Zone of..."