This report attempts to classify, correlate, and characterize some of the regional-scale fault structures which, in part, accommodated the orogenic cycle that occurred from Silurian to Carboniferous time in northern Nova Scotia. After an introduction on the geological setting of Cape Breton Island, the report describes early tectonic thrusting in the Highlands shear zone & Cabot nappe, the Margaree shear zone & Late Devonian extension, and the Ainslie detachment & Carboniferous salt tectonics. Implications for the understanding of some lead-zinc mineralization are also discussed.