Abstract
The Ulban terrane composed of a thick sedimentary series of Jurassic clastic deposits is located at the junction of the Mongol-Okhotsk and Sikhote-Alin orogenic belts. The results of studying the deposits assigned to the Middle Jurassic Elgon Formation are presented. The structure of the sedimentary succession and sedimentological features, which indicate sand-rich turbidite sedimentation in a setting of sandy lobe of turbidite fans or ramps, are considered and illustrated. The paleocurrent directions measured in outcrops and calculated using the anisotropy of the initial magnetic susceptibility suggest the transport of clastic material from western or southwestern sources.
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Notes
In work [14; Table 1], the paleomagnetic deviation (173.9°) is given without considering the magnetic deviation (–13°) at the place of operations
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ACKNOWLEDGMENTS
We are grateful to the reviewers of the manuscript V.V. Golozubov and V.Yu. Vodovozov for the commentary and suggestions that contributed to improving the quality of the provided material.
Funding
The study was supported by the Russian-Japanese program of the Research Cooperation between the Russian Foundation for Basic Research (grant no. 21-55-50001) and JSPS (grant no. 120214804) and was carried out under the state task of Kosygin Institute of Tectonics and Geophysics, Far East Branch, Russian Academy of Sciences.
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Zyabrev, S.V., Kudymov, A.V., Peskov, A.Y. et al. Middle Jurassic Turbidites of the Elgon Formation of the Ulban Terrane: Sedimentological Features and Paleocurrent Directions. Russ. J. of Pac. Geol. 16, 599–607 (2022). https://doi.org/10.1134/S1819714022060082
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DOI: https://doi.org/10.1134/S1819714022060082