The Upper Permian Dalong Formation (P2d) and Changxing Formation (P2c), and the Lower Tri-assic Zhengtang Formation (Tiz) are of deep-water turbidites. The sedimentary features of the NW Zhejiang are of SE-dipping pas...The Upper Permian Dalong Formation (P2d) and Changxing Formation (P2c), and the Lower Tri-assic Zhengtang Formation (Tiz) are of deep-water turbidites. The sedimentary features of the NW Zhejiang are of SE-dipping passive continental margin from the Paleozoic to the early Triassic. Together with the foreland molasse basin during the late Triassic (T3w), the tectonics of the NW Zhejiang is characterised by a tectogenesis which took place in the middle Triassic. From SE to NW, the structural style varies from multi-duplex, antiformal stack to imbricate fans, and then to Jura Mountain-type fold zone with fold-style varying gradually from large-scale tight fold to mid-scale chevron fold, then to cylindrical fold, reviewing a preliminary scenario of foreland fold and thrust belt. The space-distributed structures and the tectonic vergence indicate the significance of deformation in (T1-T3).展开更多
基金Project supported by the National Natural Science Foundation of China and Chinese Academy of Sciences
文摘The Upper Permian Dalong Formation (P2d) and Changxing Formation (P2c), and the Lower Tri-assic Zhengtang Formation (Tiz) are of deep-water turbidites. The sedimentary features of the NW Zhejiang are of SE-dipping passive continental margin from the Paleozoic to the early Triassic. Together with the foreland molasse basin during the late Triassic (T3w), the tectonics of the NW Zhejiang is characterised by a tectogenesis which took place in the middle Triassic. From SE to NW, the structural style varies from multi-duplex, antiformal stack to imbricate fans, and then to Jura Mountain-type fold zone with fold-style varying gradually from large-scale tight fold to mid-scale chevron fold, then to cylindrical fold, reviewing a preliminary scenario of foreland fold and thrust belt. The space-distributed structures and the tectonic vergence indicate the significance of deformation in (T1-T3).
