"stable"@en . . "Conglomerates of Heavitree [Obsolete: use HVBR]"@en . "Heavitree Breccia [Obsolete: use HVBR]"@en . . . "298.9"^^ . "HVBR"@en . "135-300m"@en . "Heavitree Breccia Formation"@en . "Kennford Breccias and Langstone Breccia [Obsolete: use HVBR]"@en . . . . "Overlies Alphington Breccia; defined by marked increase in amount of Murchisonite feldspar. Basal beds form a prominent scarp over the less well cemented Alphington Breccia."@en . "Heavitree Conglomerate [Obsolete: use HVBR]"@en . . "Reddish brown, mainly fine-grained, breccia; clasts (mainly less than 8cm, some 30cm+) of Culm sandstone, vein quartz, hornfels lava, granite, and potassium feldspar (Murchisonite). Well cemented locally."@en . "Heavitree Breccia Formation"@en . . . "Heavitree Breccia Member [Obsolete: use HVBR]"@en . "Exminster Breccias [Obsolete: use HVBR]"@en . "Coryton Breccias [Obsolete: use HVBR]"@en . . . . . "Exminster Conglomerates [Obsolete: use HVBR]"@en . . "Breccia. Stratified bedrock. Occurs onshore. Deposited during the Permian Period (298.9-251.9 Ma BP)."@en . . "From Exminster southwards Heavitree Breccia is overlain by and interdigates with the Dawlish Sandstone. North of Exminster Heavitree Breccia is overlain fairly sharply by Dawlish Sandstone. In the Hill Barton area (SX 956 928) thin Heavitree Breccia is overlain fairly sharply by Monkerton Formation."@en . "251.9"^^ . .