Geomagnetic Field Reversals in the Palaeozoic and Cenozoic: Palaeomagnetic Evidence from Russia and Turkmenia
Final Report Abstract
The aim of this project was the investigation of Neoproterozoic, Early Palaeozoic and Ceonozoic geomagnetic reversals. Using palaeomagnetism, the morphology of these reversals and their main features, such as the duration of the process, the mode of the geomagnetic component changes, and the symmetry (or asymmetry) of the process with respect to polarity and time was studied. Detailed palaeomagnetic analyses of the Lower Jaramillo transition have provided a remarkable record of this transition zone. The analysis of Vendian age samples collected from NW Russia also provided important results and resulted in two international publications. Field work was also carried out in Cambro-Ordovician sequences in Siberia to study the character of the reversing field in early Palaeozoic times. All the proposed sections are known to carry primary directions of magnetisation, they span different reversals, and sedimentation rates are suitable for detailed study of the SV and transitional periods. However, the magnetisation of these rocks proved complex and dominated by remagnetisation and work progressed using existing sample sets of Russian colleagues.
Publications
- Sedimentary rocks as recorders of geomagnetic field behaviour. 2001, Braunschweig
V. Bachtadse, J.A. Tait, and Gurary, G.
- Late Vendian Geomagnetic Field Behaviour: First Results from NW Russia. 2002, München
Tait, J., Popov, V., Khramov, A., Bachtadse, V., and Iglesia Llanos, P.
- Paleomagnetism of Upper Vendian sediments from the Winter Coast, White Sea region, Russia: implications for the paleogeography of Baltica during Neoproterozoic times. Journal of Geophysical Research, 107 (B11), EPM 10-1 to EPM 10-8 (2002)
Popov, V, Iosifidi, A, Khramov, A, Tait, J and Bachtadse, V
(See online at https://doi.org/10.1029/2001JB001607) - Upper Vendian Magnetostratigraphy: Results from the White Sea Regions, NW Russia. EGS, Nice, France (2002)
Popov, V., Iosifidi, S., Tait,J., Khramov, A.N. and Bachtadse V.
- Palaeomagnetic Data of Vendian Sediments from the Arkchangelsk Area, NW Russia. EGS-AGU-EUG Joint Assembly, Nice, France abstract #13014 (2003)
Iglesia Llanos, M.P., Popov, V., Tait, J., Bachtadse, V. and Khramov, A.N.
- Preliminary Palaeomagnetic Data from Vendian Sedimentary Rocks, NW Russia. 2003, Potsdam
M.P. Iglesia Llanos, Popov, V., Tait, J., Bachtdase, V., and Khramov, A.
- The Lower Jaramillo Transition zone, palaeomagnetic data from sediments in western Turkmenistan. EGS - AGU - EUG Joint Assembly, Nice, France, abstract #13120 (2003)
Gurarii, G.,Tait, J., Iglesia Llanos, P., Alexyutin, M., Garbuzenko, A., Trubikhin, V., Ataev, N.
- Field Reversals in the Cenozoic, Neoproterozoic and Early Palaeozoic: Recent Development. 2005, Bremen
Abalmasova A, Ataev N.H., Bachtadse V, Garbuzenko A, Gurary G, Iglesia P, Iosifidi, A, Khramov A, Popov V, Pavlov V, Shevchenko, V, Tait J, Trubikhin V and Utrobin, D
- Palaeomagnetism, magnetic stratigraphy, and petromagnetism of the Upper Vendian sedimentary rocks in the sections of the Zolotitsa River and in the Verkhotina Hole, Winter Coast of the White Sea, Russia. Russian Journal of Earth Sciences, 7 (2), 1-29 (2005)
Popov, V. V., Khramov, A. N. and Bachtadse, V.
- Paleomagnetic Data from Ediacaran (Vendian) Sediments of the Arkhangelsk Region, NW Russia: An Alternative Apparent Polar Wander Path of Baltica for the Later Proterozoic-Early Palaeozoic, Earth Planet. Sci. Lett. 240, 732–747 (2005)
Llanos, M. P. I. , Tait, J. A., Popov, V. V. and Abalmasova, A
- Sedimentary Record of the Lower Jaramillo Transition Zone. American Geophysical Union, Spring Meeting 2005, abstract #GP13B-09 (2005)
Tait, J. A., Gurarii, G. Z., Trubikhin, V., Garbuzenko, A., Iglesia-Llanos, P., and Ataev, N. M.
- Paleomagnetism of late Vendian, early Paleozoic sections from the southern part of the Siberian platform. EUG, Vienna (2006)
Abalmassova, A., Tait, J., Bachtadse, V., Rodionov, V, and Shevchenko, V.
- 2007. Wavelet Analysis of Paleomagnetic Data: 1. Characteristic, Average Times (5–10 kyr) of Variations in the Geomagnetic Field during and immediately before and after the Early Jaramillo Reversal (Western Turkmenistan), Izvestiya. Physics of the Solid Earth, 2007, Vol. 43, No. 10, pp. 819–829 (2007)1
Gurarii, G.Z. and Aleksyutin, M.V. and Ataev, N.
- New Middle Cambrian and Middle Ordovician palaeomagnetic data from Siberia: Llandelian magnetostratigraphy and relative rotation between the Aldan and Anabar–Angara blocks, Earth Planet. Sci. Lett., 276, 229-242 (2008)
Pavlov, V., Bachtadse, V., Mikhailov, V.
- Wavelet Analysis of Paleomagnetic Data: 2. How Irregular Sedimentation Rate and Breaks in the Studied Section Affect the Results, Izvestiya. Physics of the Solid Earth, 2009, Vol. 45, No. 1, pp. 21–30
Gurarii, G. Z., Aleksyutin, M.V.
(See online at https://doi.org/10.1134/S1069351312040027) - Wavelet Analysis of Paleomagnetic Data: 3. Wavelet Analysis of the Basic Series of Archaeomagnetic Data on the Geomagnetic Field Intensity for the Past 7500 Years, Izvestiya. Physics of the Solid Earth, 2009, Vol. 45, No. 6, pp.
Gurarii, G. Z. Aleksyutin, M. V.
(See online at https://doi.org/10.1134/S1069351309060068)
