. "Graded beds that may include wacke sandstone, siltstone and mudstone in variable proportions, interpreted as turbidites. Rare interbedded graptolite-bearing beds."@en . . . . . . "Northern faulted boundary: Orlock Bridge Fault."@en . . . "GALA"@en . . . . "Gala Group"@en . "stable"@en . . . . . "Strangford Group [Obsolete: use GALA]"@en . . "443.1"^^ . . "c. 6000m of near-vertical strata."@en . "Queensberry Grits [Obsolete: use GDE, GALA]"@en . "Southern faulted boundary: Laurieston Fault. Stratigraphical lower boundary with underlying Moffat Shale Group [of Ordovician to Silurian (gracilis to sedwickii biozones) age.]"@en . . . "Sandstone and wacke with subsidiary conglomerate, mudstone and siltstone. Stratified bedrock. Occurs onshore. Deposited during the Rhuddanian Age - to - Telychian Age (Silurian Period) (443.1-432.9 Ma BP)."@en . . . . . . "Gala Group"@en . "432.9"^^ . .