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The paleoseismogenic activation of the Great Lakes segment of the Erzin-Agar-Dag fault

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Abstract

Seismogeological investigations conducted in the Erzin-Agar-Dag fault zone (the Great Lakes segment) revealed traces of paleoseismogenic deformation. A detailed on-land investigation of the Tatur-Tolga and the Hairakan paleoseismic dislocations (PSD) found a dominant left lateral type of movement. The amplitudes of one-act displacements on the faults vary between 2–3 and 6–7 m (horizontal) and within 1.5–2 m (vertical). Along with the parameters of one-act horizontal movements of a few meters, we found an accumulated amplitude of strike-slip movement of a few tens to hundreds of meters. Based on the parameters of seismotectonic deformations, the magnitudes of the respective paleoearthquakes are inferred to have been 6.6 to 7.9.

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Authors and Affiliations

  1. Institute of the Earth’s Crust, Siberian Branch, Russian Academy of Sciences, Irkutsk, 664033, Russia

    S. G. Arzhannikov & A. V. Arzhannikova

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  1. S. G. Arzhannikov
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  2. A. V. Arzhannikova
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Original Russian Text © S.G. Arzhannikov, A.V. Arzhannikova, 2009, published in Vulkanologiya i Seismologiya, 2009, No. 2, pp. 56–66.

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Arzhannikov, S.G., Arzhannikova, A.V. The paleoseismogenic activation of the Great Lakes segment of the Erzin-Agar-Dag fault. J. Volcanolog. Seismol. 3, 121–130 (2009). https://doi.org/10.1134/S0742046309020055

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  • DOI: https://doi.org/10.1134/S0742046309020055

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