Abstract
Abstract The Mesozoic sedimentary successions of west Fujian evolved from Lower Triassic deep marine fine turbidites to Upper Triassic and Jurassic coal-bearing molasse deposits, and represent a typical foreland basin sedimentary sequence. This foreland basin was generated by an early Mesozoic continental collision to the south, between the South China block and the South China Sea block. This collision led to the formation of Permo-Triassic S-type granites, and a first stage of thrusting in a NNW-SSE direction. Post-collisional convergence resulted in the accumulation of thick molasse deposits. Two main unconformities, within the molasse and separating the molasse from the underlying flysch, necessitate a re-evaluation of the traditional concepts of ‘Indosinian’ and ‘Yanshanian’ movements in SE China. The tectonic and stratigraphic evolution of the west Fujian foreland basin, together with the structural features in the basin, show that the Early Mesozoic orogeny in the region was a mild and continuous process.
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