Chalk Group Lithostratigraphy: Northern Ireland - Portrush Chalk Member: Revision history

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11 October 2013

  • curprev 13:4613:46, 11 October 2013‎ Dbk talk contribs‎ 1,490 bytes +1,490‎ Created page with "The Portrush Chalk Member (stratotype: Ballymagarry Quarry [C 890 408]), 14.28 m thick at the type locality, comprises much less massively bedded chalk than the majority of th..."
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