Permian Tectonics and Paleogeography (290 Ma).

  • Mc Cloud arc fragmented during late Paleozoic truncation of SW North America
  • Assembly of western Pangaea completed
  • Transform margin coupled Mc Cloud arc with arcs built on Chortis and South America
  • Havallah back arc basin (HB) and Slide Mtn back arc separated northern arc, Quesnellia (Q), from Antler belt (A) and western North America
  • Permian Tectonic Map and Paleogeographic Map