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Keywords from Image Description:
The Quarterly journal of the Geological Society of London . PROF LAPWORTH ON THE GIRT AN SUCCESSION Fig Section at Laggan Gill VV Ba Basal zone of Graptolitic flagstones soft shales with Lasio graptus Cryplograptus Trachyderma Ad Balclatchie grits and flagstones Ad Balclatchie mudstones much broken Ac Benan Conglomerate