Around 280 Ma in the early Permian, the relative oceanic plate movement changed direction and the continental margin again became convergent. This may be due to far distant continental collisions in the buildup of Pangea. Volcanoes appeared in central Queensland forming the Lizzie Creek Volcanics and the Camboon Volcanics. Extension in these formed the Grantleight Trough, an intra-arc rift. The subduction zone was in a line with the north-east coast of Queensland, with a back arc basin formed to the east of the Hunter region, called the Barnard Basin. Deposition continued in basins around 270 Ma into the Permian, but volcanic activity was reduced.