The northernmost triple junction, a ridge-trench-fault junction moved up the Queensland coast at 28 mm per year. As it moved the magmatism inland stopped and it reached Townsville about 290 Ma. The paired triple junction with this, a fault-trench-fault junction, moved south from Brisbane at about 12 mm per year. The triple junctions in the New England region stopped subduction very quickly because the mid ocean ridge was almost parallel to the trench. The merger converted the trench to a transform fault and turned off the volcanoes to the west. In between these two ridge trench encounter points, a small triangular shaped plate continued to subduct between Brisbane and Coffs Harbour. More time was available to build up a wide subduction complex.