Lower Paleozoic and older rocks
The five-fold zonation of Humber, Dunnage, Gander, Avalon and Meguma is the first order geographic division of this temporal category. Within each zone the oldest rocks are treated first. Where continuity or correlation is established among distinctive rock packages throughout a zone, each rock package is treated separately, from north to south and province by province. In other cases, all of the lower Paleozoic and older rocks of a zone are treated by provinces, from north to south.
Figures & Tables
This volume focuses on the highly populated Canadian Appalachian region. The chapter on the East Greenland Caledonides stands alone and there is no attempt to integrate the geological accounts of the two far removed regions. Rocks of the Canadian Appalachian region are described under four broad temporal divisions: lower Paleozoic and older, middle Paleozoic, upper Paleozoic, and Mesozoic. The rocks of these temporal divisions define geographic zones, belts, basins, and graben, respectively. The area is of special interest because so many modern concepts of mountain building are based on Appalachian rocks and structures.