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

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11 October 2013

  • curprev 12:0012:00, 11 October 2013‎ Dbk talk contribs‎ 798 bytes +798‎ Created page with "This comprises a c. 20-30 mm thick grey, silty marl, locally expanding to a c. 100 mm thick chalk and marl complex. '''Macrofossil Biozonation''': ''U. socialis'' Zone '''Co..."
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