dogger2 (doger)

[Sc. also doggar: see below. The term was introduced into English geology by Young and Bird in 1822.] A sandy and oölitic ironstone. The term Dogger Series, how ever, is generally taken to include not only the dogger proper, but the gray and yellow sands which underlie it. The Dogger Series rests upon the alum shale (Upper Lias) in Yorkshire, where dogger is a provincial word meaning a rounded stone, in allusion to the rounded appearance caused by atmospheric action on the large blocks into which the rock is divided by joints. The dogger is much worked for the iron ore which it contains. This name as used by Continental geologists is the equivalent of that part of the Jura ic series which corresponds to the Lower Oölite of the English geologists. It is the Brown Jura of the Germans, and is there divided into three groups, distinguished by their fo il remains. The en 1720