Gambier-Beaconsfield and Gambier-Sorell Fracture Zones and the Movement of Plates in the Australia-Antarctica-New Zealand Region

Rugose coral distribution as a test of Devonian palaeogeographic models

“…These amalgamated terranes are thought to have been 200-300km closer to the Adelaide region of South Australia than they are now, in Early to Middle Devonian time, due to net sinistral movement along the Gambier-Tamar Fracture Zone (Harrington et al 1973;Williams 1978). If these beliefs are correct, the original latitude of the Point Hibbs Limestone and its important Pragian coral fauna, which are part of the Tyennan terrane, would have been about 42~ on the Scotese Emsian reconstruction.…”

Linking mainland Australia and Tasmania using ambient seismic noise tomography: Implications for the tectonic evolution of the east Gondwana margin

“…For instance, many interpretations conclude by requiring that Tasmania shifts some hundreds of km along an eastwest, either sinistral or dextral Palaeozoic strike-slip fault in Bass Strait (Harrington et al, 1973;Baillie, 1985;Stump et al, 1986;Elliott and Gray, 1992;Betts et al, 2002), often referred to as the Colac-Rosedale Fault. However, there is a lack of evidence for the existence of this fault from available data (e.g., modern magnetic and gravity datasets do not show evidence for any lateral offset between Tasmania and Victoria), including no persuasive along-strike correlation in terms of stratigraphy and metamorphic history.…”

Mesozoic‐Cainozoic Tectonics and Igneous Activity: Southeastern Australia

“…These rocks are evidence of volcanic activity in the early stages of the rift. Jurassic dolerites of Antarctica and Tasmania (discussed by Harrington et al, 1973) may also be associated with the rifting. Falvey (1974) has concluded that the Lower Cretaceous non-marine Otway Group sediments in the Otway Basin are a relic of a prerift intracratonic basin and that the unconformity between the Upper Cretaceous marine Sherbrook Group and the Otway Group marks the onset of rift formation.…”