"Tertiary." . . "Igneous rocks." . . . . . . . "Further evidence for a single polarity and a common source for the quartz-porphyry intrusions of the Arran area : Scottish Journal of Geology 25(3)1989 p353-359"@en . . . . . . . . . . . "Geomagnetism." . . "Cenozoic." . . "Scotland." . . "Igneous intrusions." . . "Arran." . . "Strathclyde Region." . .