. . . . "Sandstone with subsidiary conglomerate and siltstone and trace limestone. Stratified bedrock. Occurs both onshore and offshore. Deposited during the Eifelian Age (Devonian Period) (394.3-385.3 Ma BP)."@en . "Bighouse Formation"@en . "BIGH"@en . "200 to 250m"@en . . . . . "Unconformable contact on Lower Devonian sandstone [Luachair Sandstone Member] and conglomerate [Tobaireach Conglomerate Member] of the Ousdale Arkose Formation. Also unconformable on Caledonian intrusive igneous rocks and Moinian metamorphic basement rocks."@en . "Top of Fresgoe Sandstone Member, overlain by Sandside Bay Formation."@en . . . . "stable"@en . "394.3"^^ . . "Bighouse Sandstone Formation and lower part of Sandside Sandstone Formation [Obsolete: use BIGH]"@en . "Sequence dominated by thickly bedded aeolian and fluviatile cross-bedded sandstone units with minor interbeds of conglomerate in the lower parts of the sequence, siltstones and microsparitic limestone interbeds also present. Thick mappable sandstone [Fresgoe Sandstone Member] present [topmost unit] also recognisable in borehole core and seismic records. Prominent laminated limestones [Baligill Limestone Member] present in the middle part of the Formation. Breccio conglomerate [Portskerra Conglomerate Member] present locally as basal unit of the formation; bed or beds of limestone [Arylevie Limestone Bed] present within or at the base of the Portskerra Conglomererate Member at some localities."@en . "Bighouse Sandstone Formation [Obsolete: use BIGH, RBSM]"@en . . . "Bighouse Formation"@en . "385.3"^^ .