Tectonic evolution of Macquarie Arc using constraints from geophysics
This interdisciplinary study uses joint gravity and magnetic interpretation and modeling, geology, and synthesis of geochronology and geochemistry data to understand the Ordovician to Permian tectonic evolution of the southeastern Lachlan Orogen. There is a focus on the role of pre-existing (or inherited) structures during major tectonic events. The Lachlan transverse zone is an inherited structure that formed along the northern margin of a stranded microcontinent. This structure has influenced the distribution of magmatism, and has controlled intensity of crustal extension, the size of continental back arc basins, and the modes of subsequent basin inversion.