A Permian-Triassic Retroforeland Thrust System—The New England Orogen and Adjacent Sedimentary Basins, Eastern Australia

摘要: From the Late Devonian to Triassic, eastern Australia was part of Gondwana, where an active, convergent plate margin influenced by a west-dipping subduction system. This system terminated as result global reorganization in Middle Triassic. The southern New England orogen changed from prowedge (P) mode (terminology Beaumont et al., 1999) Devonian-Carboniferous uplifted plug (P-U) Permian In contrast, northern dominated retrowedge (P-U-R) both time periods. led development, Permian–Triassic, major west-directed retroforeland thrust belt England, with formation thick foreland-basin phase adjacent Bowen Basin west. Thick-skinned and thin-skinned processes operated simultaneously. orogen, thrusts are dominantly thick-skinned planar, cutting deep into crust. Basin, however, is thrusting that, places, propagated considerable distance basin, imbricate fan. hard-linked single middle-crust detachment surface. Contractional events at associated were also responsible for propagation far-field stresses reactivation older extensional faults thrusts. These reactivated well inboard of, not physically attached to, soft-linked Contraction Denison Trough western produced variety geometries, including Early growth fault-propagation folds. inversion structures often house commercial quantities hydrocarbons.