Characteristics of the reconstruction of Permian paleoplate and lithofacies paleogeography

Abstract: Basing on paleomagnetic methods, the authors reconstructed the location of Permian paleoplate, And combination with regional geological information, compiled the Permian global paleoplate map, global lithofacies paleogeography map and distribution map of hydrocarbon source rocks in Permian. Pangea and Panthalassa around were the main continental pattern. Rift systems were well developed, such as the North Sea-North Atlantic rift system in Laurasia and the rift system in African. The continuous development of the rift systems eventually led to the breakup of Pangaea. Meanwhile, Due to the continuous development of glaciation in Permian and the widespread drought environment, global sea levels in the late Permian reached the lowest in Phanerozoic. Shallow seas were wildly spread around Neo-Tethys and Paleo-Tethys. These paleogeographic environments caused the deposition of shallow marine carbonate and clastic sediments in the whole Neo-Tethys periphery and Laurasia. Lacustrine clastic sediments were deposited internally in Gondwana. Source rocks in Permian were not widely developed, the main layer system was Lower Permian shale, which was mainly concentrated in the northern margin of Laurasia, Tethys periphery and interior of Gondwana as well as eastern margin of Australia, dominated by transitional facies depositional environment.