"Dolerite with subsidiary gabbro and microdiorite and trace intrusion-breccia and tuffisite. Igneous intrusive bedrock. Occurs onshore. Emplaced during the Ordovician Period (486.9-443.1 Ma BP)."@en . "Haweswater Complex [Obsolete: use HAWS]"@en . "Dolerite with subordinate gabbro and microdiorite, and minor intrusive breccia. No radiometric age has been published but an Ordovician age is inferred because of geochemical similarities with the Borrowdale Volcanic Group and the presence of cleavage in parts of the gabbro."@en . "Not defined."@en . . "486.9"^^ . . "Haweswater Intrusions"@en . . "Not defined."@en . . . "443.1"^^ . . "stable"@en . "Haweswater Intrusions"@en . "HAWS"@en . . . "At least eight plugs and dyke-like masses within a total area of 19km2, and having a combined outcrop of about 2.6km2."@en . .