Chalk Group Lithostratigraphy: Northern England - Grasby Marl: Revision history

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10 October 2013

  • curprev 12:1812:18, 10 October 2013‎ Dbk talk contribs‎ 819 bytes +819‎ Created page with "The Grasby Marl is c. 20 mm thick at Welton Wold Quarry [SE 970 282] (Whitham, 1991), and equates with the Methwold Marl of the East Anglian Chalk Group succession (Arthurton ..."
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