Abstract
Paleomagnetic investigations of marine and subaqueous deposits in the 12-meter marine terrace of a section of the Karadzha Range (Azerbaijan) are performed. These deposits correspond to OI stage 3 and encompass the time interval ∼45–20 ka. Four anomalous deviations of the magnetization from the dipole field at the sampling site are recorded in the upper and lower transgressive members of deposits. Investigations of the influence of the anisotropy of the magnetic susceptibility (AMS) on directions of the natural remanent magnetization (NRM) showed that only three of the four identified intervals can actually reflect geomagnetic field changes. The fourth interval of the anomalous NRM behavior is recorded in samples demonstrating the presence of the identified AMS direction pointing to a possible deformation of layers, which could turn the NRM vector toward the direction of the acting factor. Based on the age of the terrace under investigation, three other anomalous horizons could correspond to heavily reduced records of the Mono and Lashamp excursions of the geomagnetic field.
Similar content being viewed by others
References
Kh. K. Arslanov, I. P. Balabanov, and Ya. A. Izmailov, “On the Present State of the Pleistocene Geochronology of the Black Sea,” in Geochronology of the Quaternary Period (Tallin, 1985) [in Russian].
S. S. Ganzei, Chronology of Paleogeographic Events of the Late Cenozoic in the Ponto-Caspian (from Data of the Fission-Track Method Candidate’s Dissertation in Geography (Moscow, 1984).
Geochronology of the USSR. Late Pleistocene-Quaternary Period (Nedra, Leningrad, 1984) [in Russian].
N.-A. Moerner, G. A, Petrova, O. V. Pilipenko, et al., “Excursions in Relation to the Variation of the Earth’s Magnetic Moment,” Fiz. Zemli, No. 10, 24–32 (2001) [Izvestiya, Phys. Solid Earth 37, 796–803 (2001)].
T. D. Morozova, Development of the Soil Cover of Europe in the Late Pleistocene (Nauka, Moscow, 1981) [in Russian].
O. V. Pilipenko, Z. V. Sharonova, V. M. Trubikhin, and A. N. Didenko, “Fine Structure and Evolution of the Geomagnetic Field Recorded in the Roxolany (Ukraine) Loess-Soil Section 75-10 ka,” Fiz. Zemli, No. 1, 66–73 (2005) [Izvestiya, Phys. Solid Earth 41, 64–70 (2005)].
O. V. Pilipenko, Z. V. Sharonova, V. M. Trubikhin, et al., “Paleomagnetic and Petromagnetic Investigations of Rocks of the Pekla Loess-Soil Section (Krasnodar Territory) in the Interval 240-55 ka,” Fiz. Zemli, No. 6, 73–82 (2005) [Izvestiya, Phys. Solid Earth 41, 492–501 (2005)].
O. V. Pilipenko, H. Abrahamsen, and V. M. Trubikhin, “Petro- and Paleomagnetic Investigations of Tuzla Section Sediments (Krasnodar Territory),” Fiz. Zemli, No. 4, 80–93 (2006) [Izvestiya, Phys. Solid Earth 42, 344–356 (2006)].
O. V. Pilipenko, H. Abrahamsen, and V. M. Trubikhin, “The Geomagnetic Field Record in Sediments of the Tuzla Section (The Krasnodar Territory, Russia) over the Time Interval 120-7- ka,” Fiz. Zemli, No. 8, 74–84 (2007) [Izvestiya, Phys. Solid Earth 43, 691–701 (2007)].
O. V. Pilipenko, Z. V. Sharonova, V. M. Trubikhin, et al., “Study of Changes in the Rock Formation Medium of the Karadzha Section (Azerbaijan) from the Results of Petromagnetic Investigations,” Fiz. Zemli, No. 12, 302–303 (2008) [Izvestiya, Phys. Solid Earth 5, 356–367 (2009)].
G. I. Popov, Pleistocene of Black-Sea-Caspian-Sea Straits (Nauka, Moscow, 1983) [in Russian].
V. M. Trubikhin, “Paleomagnetic Method and Dating of Regional Geological Events in the Pontus-Caspian Region,” in New Evidence for the Geochronology of the Quaternary (Nauka, Moscow, 1987), pp.150–157 [in Russian].
E. V. Shantser, “Genetic Types of Quaternary Deposits,” in Stratigraphy of the USSR: The Quaternary (Moscow, 1982) pp. 61–94 [in Russian].
Z. V. Sharonova, O. V. Pilipenko, V. M. Trubikhin, et al., “Reconstruction of the Geomagnetic Field over the Last 75000 Years from Paleomagnetic Records in the Roxolany Loess-Soil Section (the Dniester River, Ukraine),” Fiz. Zemli, No. 1, 4–13 (2004) [Izvestiya, Phys. Solid Earth 40, 2–11 (2004)].
A. E. Dodonov, A. L. Chepalyga, C.D. Mihailescu, et al., “Last-Interglacial Records from Central Asia to the Northern Black Sea Shoreline: Stratigraphy and Correlation,” Netherlands Journal of Geosciences 79(N 2/3), 303–311 (2000).
M. E. Evans and F. Heller, Environmental Magnetism. Principles and Applications of Enviromagnetics (Academic Press. An Imprint of Elsevier Science, 2003).
J. W. King, S. K. Banerjee, and J. Marvin, “A New Rock-Magnetic Approach to Selecting Sediments for Geomagnetic Paleomagnetic Studies: Application to Paleointensity for the Last 4000 Years,” J. Geophys. Res. 88, 5911–5921 (1983).
J. W. King and J. E. T. Channell, “Sedimentary Magnetism, Environmental Magnetism, and Magnetostratigraphy,” Rev. Geophys. 29, 358–370 (1991).
W. Lowrie, “Identification of Ferromagnetic Minerals in a Rock by Coercivity and Unblocking Temperature Properties,” Geophys. Res. Lett. 17(N2), 159–162 (1990).
P. Rochette, M. Jackson, and C. Auborg, “Rock Magnetism and the Interpretation of Anisotropy of Magnetic Susceptibility,” Rev. Geophys. 30, 209–226 (1992).
J. P. Valet, V. Tucholka, V. Courtillot, and I. Meynadier, “Paleomagnetic Constraints on the Geometry of the Geomagnetic Field during Reversals,” Nature 356, 400–407 (1992).
Author information
Authors and Affiliations
Additional information
Original Russian Text © O.V. Pilipenko, Z.V. Sharonova, V.M. Trubikhin, H. Abrahamsen, 2009, published in Fizika Zemli, 2009, No. 6, pp. 44–55.
Rights and permissions
About this article
Cite this article
Pilipenko, O.V., Sharonova, Z.V., Trubikhin, V.M. et al. Anomalous directions and paleointensity of the geomagnetic field based on paleomagnetic investigations of rocks from the Karadzha Range (Azerbaijan) of the age 45–20 ka. Izv., Phys. Solid Earth 45, 508–519 (2009). https://doi.org/10.1134/S1069351309060044
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1069351309060044