aariПроблемы Арктики и АнтарктикиArctic and Antarctic Research0555-26482618-6713Государственный научный центр Российской Федерации Арктический и антарктический научно-исследовательский институт10.30758/0555-2648-2021-67-4-382-393aari-404Research ArticleГЕОЛОГИЯ И ГЕОФИЗИКАGEOLOGY AND GEOPHYSICSCurrent-controlled sedimentation in the north-western Weddell SeaCurrent-controlled sedimentation in the north-western Weddell SeaLeitchenkovG. L.LeitchenkovL. G.

St. Petersburg

St. Petersburg

german_l@mail.ruMininaV. V.MininaV. V.

St. Petersburg

St. Petersburg

GusevaYu. B.GusevaYu. B.

St. Petersburg

St. Petersburg

Research Institute of Geology and Mineral Resources of the World Ocean; Institute of Earth Sciences, St. Petersburg State UniversityРоссияResearch Institute of Geology and Mineral Resources of the World Ocean; Institute of Earth Sciences, St. Petersburg State UniversityRussian FederationResearch Institute of Geology and Mineral Resources of the World OceanРоссияResearch Institute of Geology and Mineral Resources of the World OceanRussian FederationPolar Marine Geosurvey ExpeditionРоссияPolar Marine Geosurvey ExpeditionRussian Federation202109122021674382393Copyright © Leitchenkov G.L., Minina V.V., Guseva Y.B., 20212021Leitchenkov G.L., Minina V.V., Guseva Y.B.Leitchenkov L.G., Minina V.V., Guseva Y.B.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.aaresearch.science/jour/article/view/404

 Контуритовые наносы, формируемые придонными течениями, могут использоваться для изучения циркуляции водных масс, так как по их параметрам и характеру распространения можно судить о направленности и относительной энергии придонных течений. В данной работе рассматриваются контуритовые наносы в северо-западной части моря Уэдделла, приводится схема распространения наносов и их классификация, а также реконструируется циркуляция водных масс в глубоководных бассейнах района. Исследования основаны на обобщении и интерпретации сейсмических данных отечественных и зарубежных экспедиций, большая часть которых доступна из международной библиотеки сейсмических данных по Антарктике. В результате анализа сейсмических данных в районе исследований в диапазоне глубин от 2000 до 4500 м выявлены отделенные, ограниченные, пластерные и покровные контуритовые наносы.  Зарождение донных течений в северо-западной части моря Уэдделла  началось с раскрытия бассейна Пауэлл, и развитие самых ранних  контуритовых наносов предполагается 24–23 млн лет назад. В среднем миоцене и в позднем плиоцене отмечается усиление интенсивности донных течение и более широкое развитие контуритовых наносов. 

The sedimentary basins of the north-western Weddell Sea are characterized by a variety of contourite drifts. This study is aimed at their identification, spatial mapping and temporal evolution and based on the integration of a large amount of seismic data collected by different countries including the recent data of the Russian Antarctic Expedition. Most of the drifts in the region being studied are classified as separated, confined, plastered or sheeted. The chain of sediment wave fields is mapped in the western and northern Powell Basin. The earliest contourite drifts started to form in the Early Miocene or, possibly, in the Late Oligocene. The changes in the depositional pattern in the Middle Miocene and then in the Late Pliocene are thought to have resulted from successive intensification of the bottom currents.

Antarcticbottom currentscontourite driftJane BasinPowell Basinseismic researchseismic stratigraphyWeddell SeaAntarcticbottom currentscontourite driftJane BasinPowell Basinseismic researchseismic stratigraphyWeddell SeaРабота выполнена в рамках гранта РФФИ № 19-05-00858This work was supported by the Russian Foundation for Basic Research (grant № 19-05-00858).ReferencesHernandez-Molina F.J., Llave E., Stow D.A.V., Garcia M., Somoza L., Vazquez J.T., Lobo F.J., Maestro A., Diaz del Rio V., Leon R., Medialdea T., Gardner J. The contourite depositional system of the gulf of Cadiz: a sedimentary model related to the bottom current activity of the Mediterranean outflow water and its interaction with the continental margin. Deep-Sea Res. II. 2006, 53: 1420–146.Hernandez-Molina F.J., Llave E., Stow D.A.V., Garcia M., Somoza L., Vazquez J.T., Lobo F.J., Maestro A., Diaz del Rio V., Leon R., Medialdea T., Gardner J. The contourite depositional system of the gulf of Cadiz: a sedimentary model related to the bottom current activity of the Mediterranean outflow water and its interaction with the continental margin. Deep-Sea Res. II. 2006, 53: 1420–146.Faugeres J.-C., Stow D.A.V., Imbert P., Viana A.R. Seismic features diagnostic of contourite drifts. Marine Geology. 1999, 162: 1–38.Faugeres J.-C., Stow D.A.V., Imbert P., Viana A.R. Seismic features diagnostic of contourite drifts. Marine Geology. 1999, 162: 1–38.Rebesco M., Stow D. Seismic expression of contourites and related deposits: a preface. J. Marine Geophysical Researches. 2001, 22: 303–308.Rebesco M., Stow D. Seismic expression of contourites and related deposits: a preface. J. Marine Geophysical Researches. 2001, 22: 303–308.Faugeres J.-C., Stow D.A.V. Chapter 14 Contourite drifts: Nature, evolution and controls. Contourites. Developments in Sedimentology. 2008, 60: 258–288. doi: 10.1016/S0070-4571(08)10014-0.Faugeres J.-C., Stow D.A.V. Chapter 14 Contourite drifts: Nature, evolution and controls. Contourites. Developments in Sedimentology. 2008, 60: 258–288. doi: 10.1016/S0070-4571(08)10014-0.Koenitz D., White N., McCave I.N., Hobbs R. Internal structure of a contourite drift generated by the Antarctic Circumpolar Current. Geochemistry, Geophysics, Geosystems. 2008, 9: Q06012. http:// dx.doi.org/10.1029/2007GC001799.Koenitz D., White N., McCave I.N., Hobbs R. Internal structure of a contourite drift generated by the Antarctic Circumpolar Current. Geochemistry, Geophysics, Geosystems. 2008, 9: Q06012. http:// dx.doi.org/10.1029/2007GC001799.Bohoyo F., Galindo-Zaldivar J., Maldonado A., Schreider A. Basin development subsequent to ridgetrench collision: The Jane Basin, Antarctica. Marine Geophysical Research. 2002, 23 (5): 413–421.Bohoyo F., Galindo-Zaldivar J., Maldonado A., Schreider A. Basin development subsequent to ridgetrench collision: The Jane Basin, Antarctica. Marine Geophysical Research. 2002, 23 (5): 413–421.Eagles G., Livermore R. Opening history of Powell Basin, Antarctic Peninsula. Mar. Geol. 2002, 185: 195–205.Eagles G., Livermore R. Opening history of Powell Basin, Antarctic Peninsula. Mar. Geol. 2002, 185: 195–205.Barker P.F, Kennett J. P., O’Connel S., Pisias N.O. and shipboard scientific party. Proceedings of the Ocean Drilling Program. Scientific Results. Ocean Drilling Program. Texas A&M University, 1990. V. 113: 1033 p.Barker P.F, Kennett J. P., O’Connel S., Pisias N.O. and shipboard scientific party. Proceedings of the Ocean Drilling Program. Scientific Results. Ocean Drilling Program. Texas A&M University, 1990. V. 113: 1033 p.Vernet M., Geibert W., Hoppema M., Brown P.J., Haas C., Hellmer H., Jokat W., Jullion L., Mazloff M., Bakker D., Brearley J.A., Croot P., Hattermann T., Hauck J., Hillenbrand C.-D., Hoppe C., Huhn O., Koch B., Lechtenfeld O., Meredith M., Naveira Garabato A.C., Notting E.-M., Peeken I., Rutgers van der Loeff M., Schmidtko S., Schroder M., Strass V.H., Torres-Valdes S., Verdy A. The Weddell Gyre, Southern Ocean: Present Knowledge and Future Challenges. Reviews of Geophysics. 2019, 57: 623–708.Vernet M., Geibert W., Hoppema M., Brown P.J., Haas C., Hellmer H., Jokat W., Jullion L., Mazloff M., Bakker D., Brearley J.A., Croot P., Hattermann T., Hauck J., Hillenbrand C.-D., Hoppe C., Huhn O., Koch B., Lechtenfeld O., Meredith M., Naveira Garabato A.C., Notting E.-M., Peeken I., Rutgers van der Loeff M., Schmidtko S., Schroder M., Strass V.H., Torres-Valdes S., Verdy A. The Weddell Gyre, Southern Ocean: Present Knowledge and Future Challenges. Reviews of Geophysics. 2019, 57: 623–708.Maldonado A., Barnolas A., Bohoyo F., Escutia C., Galindo-Zaldivar J., Hernandez-Molina J., Jabaloy A., Lobo F.J., Nelson C.H., Rodriguez-Fernandez J., Somoza L., Vazquez J.-T. Miocene to Recent contourite drifts development in the northern Weddell Sea (Antarctica). J. Global and Planetary Change. 2005, 45: 99–129.Maldonado A., Barnolas A., Bohoyo F., Escutia C., Galindo-Zaldivar J., Hernandez-Molina J., Jabaloy A., Lobo F.J., Nelson C.H., Rodriguez-Fernandez J., Somoza L., Vazquez J.-T. Miocene to Recent contourite drifts development in the northern Weddell Sea (Antarctica). J. Global and Planetary Change. 2005, 45: 99–129.Pudsey C. The Weddell Sea: contourites and hemipelagites at the northern margin of the Weddell Gyre. Geological society. 2002, 22: 289–303.Pudsey C. The Weddell Sea: contourites and hemipelagites at the northern margin of the Weddell Gyre. Geological society. 2002, 22: 289–303.Shanmugam G. Chapter 5 Deep-water bottom currents and their deposits. Contourites. Developments in Sedimentology. 2008, 60: 59–81. doi: 10.1016/S0070-4571(08)10014-0.Shanmugam G. Chapter 5 Deep-water bottom currents and their deposits. Contourites. Developments in Sedimentology. 2008, 60: 59–81. doi: 10.1016/S0070-4571(08)10014-0.King E.C., Leitchenkov G., Galindo-Zaldivar J., Maldonado A., Lodolo E. Crustal structure and sedimentation in Powell Basin. Geology and seismic stratigraphy of the Antarctic margin, part 2. Antarctic research series. 1997, 71: 75–93.King E.C., Leitchenkov G., Galindo-Zaldivar J., Maldonado A., Lodolo E. Crustal structure and sedimentation in Powell Basin. Geology and seismic stratigraphy of the Antarctic margin, part 2. Antarctic research series. 1997, 71: 75–93.Coren F., Ceccone G., Lodolo E., Zanolla C., Zitellini N., Bonazzi C., Centonze J. Morphology, seismic structure and tectonic development of the Powell Basin, Antarctica. Journal of the Geological Society. 1997, 154 (5): 849–862.Coren F., Ceccone G., Lodolo E., Zanolla C., Zitellini N., Bonazzi C., Centonze J. Morphology, seismic structure and tectonic development of the Powell Basin, Antarctica. Journal of the Geological Society. 1997, 154 (5): 849–862.Viseras C., Maldonado A. Facies architecture, seismic stratigraphy and development of a highlatitude basin: the Powell Basin (Antarctica). Mar. Geol. 1999, 157: 69–87.Viseras C., Maldonado A. Facies architecture, seismic stratigraphy and development of a highlatitude basin: the Powell Basin (Antarctica). Mar. Geol. 1999, 157: 69–87.Howe J., Livermore R., Maldonado A. Mudwave activity and current-controlled sedimentation in Powell Basin, northern Weddell Sea, Antarctica. J. Marine Geology. 1998, 149: 229–241.Howe J., Livermore R., Maldonado A. Mudwave activity and current-controlled sedimentation in Powell Basin, northern Weddell Sea, Antarctica. J. Marine Geology. 1998, 149: 229–241.Kavoun M., Vinnikovskaya O. Seismic stratigraphy and tectonics of the northwestern Weddell Sea Antarctica inferred from marine geophysical surveys. Tectonophysics. 1994, 240: 299–341.Kavoun M., Vinnikovskaya O. Seismic stratigraphy and tectonics of the northwestern Weddell Sea Antarctica inferred from marine geophysical surveys. Tectonophysics. 1994, 240: 299–341.

The authors declare that there are no conflicts of interest present.