Abstract
The basement rocks of the Korean Peninsula consist of high-grade gneiss and schist as old as 2.51Ga. The Cambrian–Ordovician succession formed in the Sino-Korean Block during greenhouse period. Sedimentation was resumed in coastal plain and swamp environments in the Carboniferous. In the Triassic, the South China Block collided against the Sino-Korean Block along the Imjingang Belt. The eastern part of the Sino-Korean Block rotated and moved southward relative to the South China Block along the South Korean Tectonic Line. In the Middle to Late Jurassic, orthogonal subduction of the Pacific Plate caused compression and thrust deformation, accompanied with granite batholiths. In the Cretaceous, a continental arc system developed with numerous extensional, left-lateral strike-slip basins. In the Miocene, right-lateral pull-apart basins formed in the eastern continental margin. The Korea Plateau experienced continental rifting accompanied with extensive volcanism. In the Yellow Sea, transgressive deposits formed during sea-level rise. Tidal flats formed a retrogradational, coarsening-upward succession, controlled by the combined effect of waves and tides with seasonal cycles.
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