Paleomagnetism of Upper Jurassic Rocks of the Central Part of the Russian Plate: Pochinki and Dubrovskoe Sections

The article presents the results of paleomagnetic and petromagnetic studies of two Upper Jurassic sedimentary sections of the Russian Plate: Pochinki (Nizhny Novgorod Region) and Dubrovskoye (Republic of Mordovia). The rocks of the studied sections demonstrate a good quality paleomagnetic record, which made it possible to carry out a component analysis and calculate the average paleomagnetic directions of the characteristic component of magnetization. The results of the component analysis, petromagnetic researche and microscopic study of the rocks confirm the secondary nature of the characteristic component of magnetization associated with the replacement of framboid pyrite by magnetite at the stage of late diagenesis, which excludes the possibility of constructing a column of magnetic polarity of the studied sections.