. "Blue Lias Formation (Hebrides) and Breakish Formation, Interdigitated"@en . . "Breakish Formation"@en . "Blue Lias Formation (Hebrides) and Breakish Formation, Interdigitated"@en . "Limestone and mudstone with subsidiary sandstone and siltstone. Bedrock. Occurs onshore. Formed during the Hettangian Age - to - Sinemurian Age (Jurassic Period) (201.4-192.9 Ma BP)."@en . "BLBRK"@en . . . "Composite consisting of two or more rock units. This is necessitated because there is a N-S facies change from shallow-water Breakish Formation [BRKH] (the former Broadford Beds BFB) on Raasay and Skye (though there is also some interdigitation there) to deeper water, alternating limestone and mudstone of the Blue Lias Formation [BLIH] in Morvern and Mull. In Ardnamurchan the 2 facies interdigitate in about 50-50 proportions (Oates 1976, 1978; Hesselbo et al., 1998). See the entries for the constituent units for more information."@en . . . "192.9"^^ . "201.4"^^ . . "stable"@en . . "Blue Lias Formation (Hebrides)"@en .