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LXVII. On the Occurrence of a Fault in the Old Red Sandstone and Ballagan Series in Dumbuck Glen, near Dumbarton
Transactions of the Geological Society of Glasgow
257 described the lithological character and origin of the district. The Silurian beds consist of dark, glistening, foliated shales, gritty, arenaceous flagstones, micaceous, close grained, metamorphosed schists, fine conglomerates, and thin beds of argillaceous shalessome of which are highly ferruginous, and more or less altered by heat-nearly vertical and greatly disturbed. There is an apparent absence of intrusive rocks; the conformation of the surrounding hills and the intervening valleysdoi:10.1144/transglas.2.3.257 fatcat:xjwrdu7twbgh3jumbzxvd2ijti