Anomalous Features in the Behavior of the Geomagnetic Field at the End of the Cretaceous Normal Superchron: Insights from the Study of the Turonian–Santonian in the Southwestern Crimea
A. Yu. Guzhikov, E. Yu. Baraboshkin, I. P. Ryabov, M. A. Ustinova, V. S. Vishnevskaya
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Abstract—In 394 samples characterizing 266 stratigraphic levels in four Turonian–Santonian sections of the Southwestern Crimea, characteristic remanent magnetization components (ChRM) acquired at the stage of diagenesis are identified. The obtained data fix the record of the paleosecular geomagnetic variation of high amplitude (root mean square deviation S = 25.9° with a fixed cut-off angle of 45°, which is about twice as high as the model S for this latitude) in the sediments formed during ~5–6 Myr and is interpreted as anomalous behavior of the geomagnetic field in the Turonian, Coniacian, and Santonian.
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Izvestiya, Physics of the Solid Earth is an international peer reviewed journal that publishes results of original theoretical and experimental research in relevant areas of the physics of the Earth''s interior and applied geophysics. The journal welcomes manuscripts from all countries in the English or Russian language.
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