KHATANGA-LOMONOSOV FAULT ZONE: STRUCTURE, TECTONIC POSITION AND GEODYNAMICS

For the first time according to the results of the interpretation of new seismic data the structural features of the Khatanga-Lomonosov fault zone, adapted to the junction of the Laptev Sea continental margin with the structures of the Eurasian spreading basin and the Lomonosov ridge are considered. The reflection of the Khatanga-Lomonosov fault zone in anomalous geophysical fields, in a wave seismic picture on the sections is illustrated and the nature of its kinematic relationships with heterogeneous tectonic elements is demonstrated. The most noticeable horizontal movements in this area occur at the Late Cretaceous — the first half of the Paleogene. The tectonic nature, the role and place of this fault zone in the geodynamic evolution of the region are substantiated.

1. Geologiya i geoekologiya kontinental’nykh okrain Evrazii. [Geology and Geoecology of the continental margins of Eurasia. [Geology and Geoecology of the continental margins of Eurasia]. Iss. 3. Moscow, GEOS, 2011, 182 p. (In Russian).
2. Innovatsionnyy vektor razvitiya OAO “MAGE”. [The innovative vector of development of JSC “MAGE”]. Murmansk, “Murm. milya”, 2017, 264 р. (In Russian).
3. Shipilov E. V. O vliyanii protsessov molodogo okeanobrazovaniya na stanovlenie kontinental’nykh okrain Arktiki. [On the influence of the processes of young ocean formation on the formation of the continental margins of the Arctic]. Sedimentologicheskie protsessy i evolyutsiya morskikh ekosistem. Kn. 1. Apatity, Izd-vo Kola SC RAN, 2001, pp. 193—208. (In Russian).
4. Shipilov E. V. Tectono-geodynamic evolution of Arctic continental margins during epochs of young ocean formation. Geotectonics, 2004, 38 (5), pp. 343—365.
5. Shipilov E. V. Generations of spreading basins and stages of breakdown of Wegener’s Pangea in the geodynamic evolution of the Arctic Ocean. Geotectonics, 2008, 42 (2), pp. 105—124.
6. Shipilov E. V., Bogdanov N. A., Khain V. E. Glubinnaya struktura i tektonicheskie preobrazovaniya Arkticheskoy okrainy Evrazii v fanerozoe (Barentsevo, Karskoe i Laptevykh morya). [Deep structure and tectonic transformations of the Arctic margin of Eurasia in Phanerozoic (Barents, Kara and Laptev seas)]. Obshchie voprosy tektoniki. Tektonika Rossii. Moscow, GEOS, 2000, pp. 605—608. (In Russian).
7. Shipilov E. V., Lobkovskiy L. I. Tectono-Geodynamic Transformations of the Amerasian Basin Lithosphere in the Cenozoic. Doklady Earth Sciences, 2012, vol. 445, Pt. 2, pp. 979—985. DOI: 10.1134/S1028334X12080247.
8. Lobkovsky L. I., Shipilov E. V., Kononov M. V. Geodynamic model of upper mantle convection and transformation of the Arctic lithosphere in the Mesozoic and Cenozoic. Izvestiya. Physics of the Solid Earth, 2013, vol. 49, no. 6, pр. 767—785. DOI: 10.1134/S1069351313060104.
9. Mazur S., Campbell S., Green C., Bouatmani R. Extension across the Laptev Sea continental rifts constrained by gravity modeling. Tectonics, 2015, vol. 34, pp. 435—448. DOI: 10.1002/2014TC003590.
10. Shipilov E. V., Shkarubo S. I., Raznitsin Yu. N. Neotectonics of the northern Norwegian–Greenland basin: specific features and evolution of the Knipovich Ridge and Pomorsky perioceanic trough. Doklady Earth Sciences, 2006, vol. 410 (7), pp. 1056—1061.
11. Faleide J. I., Tsikalas F., Eldholm O. Evolution of conjugate continental margin in a regional rift-shear tectonic setting: the Lofoten-SW Barents Sea and NE Greenland margin in the NE Atlantic. Arctic geology, hydrocarbon resources and environmental challenges. Ed. M. Smelror, T. Bugge. Norsk Geologisk Forening (NGF), 2004, no. 2, pp. 45—46.
12. Оb’’yasnitel’naya zapiska k Tektonicheskoy karte morey Karskogo i Laptevykh i severa Sibiri m-ba 1:2 500 000. [Explanatory Notes for the 1:2 500 000 Tectonic Map of the Kara and Laptev Seas)]. Pod red. N. A. Bogdanova, V. E. Khaina, O. M. Rozena, E. V. Shipilova, V. A. Vernikovskogo, S. S. Dracheva, S. L. Kostyuchenko, A. B. Kuz’micheva, S. B. Sekretova. Moscow, In-t litosfery RAN, 1998, 127 р. (In Russian).
13. Bogdanov N. A., Khain V. E., Shipilov E. V. Sistema kaynozoyskikh riftov Vostochnoy Arktiki i ee vozmozhnoe znachenie. [The Cenozoic Rift System of Eastern Arctic and Its Probable Implications]. Dokl. Akad. nauk, 1995, vol. 345, no. 1, pp. 84—86. (In Russian).
14. Shipilov E. V., Shkarubo S. I. Tektonika i geodinamika oblastey molodogo okeanoobrazovaniya. [Tectonics and geodynamics of areas of young ocean formation]. Tektonika i geodinamika: obshchie i regional’nye aspekty. Materialy Soveshchaniya. Vol. 2. Moscow, GEOS, 1998, pp. 281—284. (In Russian).
15. Gramberg I. S., Demenitskaya R. M., Sekretov S. B. Sistema riftogennykh grabenov shel’fa morya Laptevykh kak nedostayushchego zvena riftovogo poyasa khrebta Gakkelya — Momskogo rifta. [Тhe System of rift grabens of the Laptev sea shelf as the missing link of the rift belt of the Gakkel — Momsky rift ridge]. Dokl. Akad. nauk, 1990. vol. 311, no. 3, pp. 689—694. (In Russian).
16. Ivanova N. M., Sekretov S. B., Shkarubo S. I. Dannye o geologicheskom stroenii shel’fa morya Laptevykh po materialam seysmicheskikh issledovaniy. [Data on the geological structure of the Laptev sea shelf on the materials of seismic studies]. Okeanologiya, 1989, vol. 29, no. 5, pp. 789—795. (In Russian).
6
17. Sekretov S. B. Northwestern margin of the East Siberian Sea, Russian Arctic: seismic stratigraphy, structure of sedimentary cover and some remarks on the tectonic history. Tectonophysics, 2001, vol. 339, pp. 353—383.
18. Andieva T. A. Tektonicheskaya pozitsiya i osnovnye struktury morya Laptevykh. [Tectonic position and basic structures of the Laptev sea]. Neftegazю geologiya. Teoriya i praktika. Elektron. nauch. zhurn., 2008, vol. 3, no. 1. (In Russian).
19. Khain V. E., Filatova N. I., Polyakova I. D. Tektonika, geodinamika i perspektivy neftegazonosnosti Vostochno-Arkticheskikh morey i ikh kontinental’nogo obramleniya. [Tectonics, Geodynamics, and Petroleum Potential of the Eastern Arctic Seas and Their Continental Framing]. Tr. GIN RAN. Vol. 60. Moscow, Nauka, 2009, 227 p. (In Russian).
20. Baranov V. B., Flint M. V., Rimsky-Korsakov N. А. et. аl. Structural Evidence of Recent Activity of the Khatanga–Lomonosov Fault Zone in the Laptev Sea. Doklady Earth Sciences, 2018, vol. 480, no. 1, рр. 671—673. DOI: 10.1134/S1028334X18050215.
21. Golovachev E. M., Shipilov E. V. Lineamentnye zony morya Laptevykh. [Lineament Zones of Laptev sea]. Izv. vyssh. ucheb. zavedenii. Geologiya i razvedka, 1986, no. 8, pp. 106—108. (In Russian).
22. Petrov O., Smelror M., Shokalsky S. et al. A new international tectonic map of the Arctic (TeMAr) at 1:5 M scale and geodynamic evolution in the Arctic region. Geophysical Research Abstracts, 2013, vol. 15. GU2013-13481.
23. Shkarubo S. I., Zavarzina G. A. Stratigrafiya i kharakteristika kompleksov osadochnogo chekhla zapadnoy chasti morya Laptevykh. [Stratigraphy and characterization of the complexes of the sedimentary cover in the Western part of the Laptev sea]. Neftegaz. geologiya. Teoriya i praktika, 2011, vol. 6, no. 2. (In Russian).
24. Shipilov E. V. Basaltic magmatism and strike-slip tectonics in the Arctic margin of Eurasia: evidence for the early stage of geodynamic evolution of the Amerasia Basin. Russian Geology and Geophysics, 2016, vol. 12, pp. 1668—1687. Available at: http://dx.doi.org/10.1016/j.rgg.2016.0 .04.007.
25. Sobornov K., Afanasenkov A. Strike-slip Faulting in the Northern Part of the West Siberian Basin and Enisey-Khatanga Trough: Structural Expression, Development and Implication for Petroleum Exploration. 78th EAGE Conference & Exhibition, 2016. Vienna, Austria, 2016. Paper Th P5 03.
26. Imaeva L. P., Gusev G. S., Imaev V. S. et al. Geodinamicheskaya aktivnost’ noveyshikh struktur i polya tektonicheskikh napryazheniy severo‐vostoka Azii. [Geodynamic activity of the newest structures and fields of tectonic stresses of northeast Asia]. Geodinamika i tektonofizika, 2017, vol. 8, no. 4, рр.737—768. DOI: 10.5800/GT‐2017‐8‐4‐0315. (In Russian).
27. Dinkelman M. G., Kumar N., Helwig J., Emmet P., Granath J. Highlights of Petroleum and Crustal Framework of the Beaufort-Mackenzie Basin: Key Results from BeaufortSPAN East Phases I and II Surveys. Canadian Society of Exploration Geophysicists (CSEG). Recorder, 2008, vol. 33, no. 9, pp. 22—25.
28. Helwig J., Kumar N., Dinkelman M. G., Emmet P. Three segments of the Arctic Continental Margin, Beaufort Sea, Canada: Deep Seismic Profiles of Crustal Architecture: Abstract presented at GeoCanada, 2010, May 10—14, Calgary, Canada, 4 p.
29. Piepjohn K., Lorenz H., Franke F. et al. Mesozoic structural evolution of the New Siberian Islands. Circum-Arctic Lithosphere Evolution. Pease V. & Coakley B. (eds). Geological Society. London, Special Publ., 2018, vol. 460, pp. 239—262.
30. Backman J., Jakobsson M., Frank M., Sangiorgi F. Age model and core-seismic integration for the Cenozoic Arctic coring expedition sediments from the Lomonosov ridge. Paleoceanography, 2008, vol. 23, pp. 3—18.
31. Chernykh A., Glebovsky V., Zykov M., Korneva M. New insights into tectonics and evolution of the Amerasia Basin. J. of Geodynamics. Available at: https://doi.org/10.1016/j.jog.2018.02.010.