Late Permian magnetostratigraphy and its global correlation

A calibration among magnetic polarity sequence, biostratigraphy zonation an d isotopic age reveals that the boundary between the Carboniferous-Permian reversed Polarity Superzone and Permian-Triassic Mixed Polarity Superzone o ccurs at the top of the Wordian Stage of the Guadalupian Series and is date d as 265 Ma. The Late Permian magnetic polarity sequence integrates four po larity zones, corresponding to the Upper Guadalupian Series, the Wuchiaping ian Stage, and the Lower and the Upper Changhsingian Stage of the Lopingian Series. This reference magnetostratigraphy polarity sequence may serve as a useful guide to the chronostratigraphic correlation of Late Permian strat a across major biogeographic and facies barriers.