Magnetostratigraphy of the Reference Sections of the Cisuralian Series (Permian System)

For the first time, paleomagnetic and rock-magnetic studies of the Dal’ny Tulkas and Mechetlino sections located in the Southern part of the Cisuralian foredeep have been performed and proposed as international standards for the global correlation (GSSP) of the lower boundaries of the Artinskian and Kungurian Stages. It was determined that the rocks of the sections are weakly magnetic (Jn—0.13–6.08 × 10−3 A/m, ae—−0.6–21.8 × 10−5 SI units). The increase of the magnetic characteristics occurs in the following direction: limestone → carbonate concretions → calcareous argillites → argillites → sandstones. There were detected no inversions of the magnetic pole in the frontier sections of the Kiaman reversed polarity hyperchron. Paleomagnetic and rock-magnetic data were compared with the results of paleontological studies, which allowed a paleofacial reconstruction of depositional environment in the Cisuralian Epoch. It is confirmed that paleomagnetic data can be an important additional element when considering sections as reference objects of the Global Boundary Stratotype Section and Point (GSSP).