Of or pertaining to Bernicia or its inhabitants; spec. Geology, designating the carboniferous limestone rocks of Northumberland and its borders.

Used by H. D. Rogers to designate the Millstone Grit formation of the Pennsylvanian Coal-measures. Also as n.: this formation.

Geology. Used to designate the lowest carboniferous formation of the Pennsylvanian coal-measures.

Geology. Designating or relating to a period of the Palaeozoic era, between about 345 and 320 million years ago, which followed the Devonian and…

Geology. Designating or relating to a period of the Palaeozoic era, between about 320 and 290 million years ago, which followed the Mississippian and…

Geology. Designating a division of the Upper Carboniferous in Europe, above the Namurian and below the Stephanian; of or relating to this division.

Of, pertaining to, or designating the uppermost division of the Carboniferous in Europe, especially where represented by coalbearing formations. Also…

Of, pertaining to, or designating the upper of the two divisions of the Lower Carboniferous (Dinantian) in Europe. Also absol.

Of, pertaining to, or designating the lower of the two divisions of the Lower Carboniferous (Dinantian) in Europe. Also absol.

Of, relating to, or designating the lowest series of the Upper Carboniferous outside North America, lying above the Viséan series and below the…