"458.2"^^ . . "Worm Crag Formation [Obsolete: use AIB, WNY]"@en . . . "AIB"@en . . "Airy's Bridge Formation [Obsolete: use AIB]"@en . "Airy's Bridge Tuff Formation"@en . . "Airy's Bridge Group [Obsolete: use AIB]"@en . "Rhyolitic lapilli-tuff and rhyolitic tuff with subsidiary pyroclastic-breccia. Stratified bedrock. Occurs onshore. Deposited during the Caradoc Series (Ordovician Period) (458.2-449.75 Ma BP)."@en . "Airy's Bridge Tuff Formation"@en . "Massive, white to pink weathered eutaxitic and parataxitic rhyolitic tuffs and lapilli-tuffs, with some intercalated units of pyroclastic breccia and widespread beds of laminated tuff. Some component units are markedly garnetiferous."@en . . "Defined by the base of the overlying formations that comprise a mixed succession of bedded pyroclastic rocks and volcaniclastic sandstones including: Lingmell Formation in the Central Fells, and the Duddon Hall Formation in the Coniston and Ulpha areas."@en . "0 - 1010m."@en . . "Base of rhyolitic pyroclastic rocks. Unconformable on slumped surface of Whorneyside Tuff Formation and locally conformable and interbedded with the Whorneyside Tuff Formation. In places directly on the Birker Fell Andesite Formation."@en . . . . . . "stable"@en . . "449.75"^^ .