Middle-upper quaternary deposits of the northern sector of the Patagonian continental slope contourite system (Southwestern Atlantic)

Authors

  • I. O. Murdmaa Shirshov Institute of Oceanology, Russian Academy of Sciences
  • E. V. Ivanova Shirshov Institute of Oceanology, Russian Academy of Sciences
  • G. H. Kazarina Shirshov Institute of Oceanology, Russian Academy of Sciences
  • N. V. Simagin Shirshov Institute of Oceanology, Russian Academy of Sciences
  • A. G. Roslyakov Shirshov Institute of Oceanology, Russian Academy of Sciences
  • D. G. Borisov Shirshov Institute of Oceanology, Russian Academy of Sciences
  • N. V. Nemchenko Shirshov Institute of Oceanology, Russian Academy of Sciences

DOI:

https://doi.org/10.29006/1564-2291.JOR-2020.48(1).7

Keywords:

contourites, gravitites, lithostratigraphy, granulometry, seismic facies, foraminifers, diatoms, biostratigraphy

Abstract

Lithological and micropaleontological (planktonic and benthic foraminifers, diatoms) studies in four sediment cores revealed major patterns of lithostratigraphy and biostratigraphy of contourites and gravitites in the uppermost sediment layer within the depth range 3500– 4300 m of the northern sector of the Patagonian continental slope contourite system. It is ascertained that in conditions of low terrigenous material supply from the land and high, although variable bottom contour current velocities of waters of Antarctic origin, hemipelagic calcareous nanno-foraminiferal ooze deposited in the Holocene over middleupper Pleistocene contourites in the southern part of the study area (cores AI–2609, AI– 2610). The Holocene calcareous surface layer is absent in the northern part of the study area (cores AI–2611, AI–2612). Middle-Upper contourites and gravitites are unevenly enriched in diatoms and radiolarians here, up to formation of slightly siliceous-terrigenous diatomaceous mud. Reworked Neogene foraminifers and diatoms evidence for erosion of Neogene deposits bottom currents and gravity flows.

References


  1. >Ivanova E.V., Murdmaa I.O., Borisov D.G., Isachenko S.M., Seitkalieva E.A., Bashirova L.D., Blinova E. V., Ul’yanova M.O., Lapidus L. V., and Fidaev D.T. Investigation of Contourite Systems in the South Atlantic during Cruise 46 of the R/V Akademik Ioffe. Oceanology, 2016, Vol. 56, No. 5, pp. 322–324, https://doi.org/10.1134/S0001437016040044.

  2. Barron J.A. Miocene to Holocene planktic diatoms. In: Bolli H.M. et al. (Eds.). Plankton Stratigraphy, Cambridge: Cambridge University Press, 1985, pp. 763–809, https://doi.org/10.1007/978-3-319-02330-4_55-1.

  3. Barron J.A, Bukry D., Dea W., Addison J.A., and Finne B. Paleoceanography of the Gulf of Alaska during the past 15,000 years: Results from diatoms, silicoflagellates, and geochemistry. Marine Micropaleontology, 2009, Vol. 72, pp. 176–195, doi: 10.1016/j. marmicro.2009.04.006.

  4. Bé A.W.H. and Tolderlund D.S. Distribution and ecology of living planktonic foraminifera in surface waters of the Atlantic and Indian oceans. In: The micropaleontology of oceans, London: Cambridge Univ. Press, 1971.

  5. Cody R.D., Levy R.H., Harwood D.M., and Sadler P.M. Thinking outside the zone: highresolution quantitative diatom biochronology for the Antarctic Neogene. Palaeogeography, Palaeoclimatology, Palaeoecology, 2008, Vol. 260(1–2), pp. 92–121, doi: 10.1016/j. palaeo.2007.08.020.

  6. Harloff J. and Mackensen A. Recent benthic foraminiferal associations and ecology of the Scotia Sea and Argentine Basin. Marine Micropaleontology, 1997, Vol. 31, Issue 1-2, pp. 1–29, doi: 10.1016/S0377-8398(96)00059-X.

  7. Harloff J. and Mackensen A. Recent benthic foraminiferal associations and ecology of the Scotia Sea and Argentine Basin. Marine Micropaleontology, 1997, Vol. 31, Issue 1-2, pp. 1–29, doi: 10.1016/S0377-8398(96)00059-X.

  8. Hernández-Molina F.J., Paterlini C., Somoza L., Violante R., Arecco M., Isasi M., Rebesco M., Uenzelmann-Neben G., Neben S., and Marshall P. Giant mounded drifts in the Argentine Continental Margin: Origins, and global implications for the history of thermohaline circulation. Marine and Petroleum Geology, 2010, Vol. 27, pp. 1508–1530, doi:10.1016/j. marpetgeo.2010.04.003.

  9. Johnson D.A., Tappa E., and Thunell R. Late tertiary/Quaternary magnetostratigraphy and biostratigraphy of Vema Channel sediments. Marine Geology, 1984, Vol. 58, No. 1/2, pp. 89–100, https://doi.org/10.1016/0025-3227(84)90117-8.

  10. Jones G.A., Johnson D.A., and Curry W.B. High-resolution stratigraphy in late Pleistocene/ Holocene sediments of the Vema Channel. Marine Geology, 1984, Vol. 58, No. 1/2, pp. 59–87.

  11. Kennett J.P. and Srinivasan M.S. Neogene planktonic foraminifera. A phylogenetic atlas, California: Hutchinson Ross, 1983, 265 p.

  12. Krastel S., Wefer G., Hanebuth T., Antobreh A., Freudenthal T., Preu B., Schwenk T., Strasser M., Violante R., and Winkelmann T. Sediment dynamics and geohazards off Uruguay and the de la Plata River region (northern Argentina and Uruguay). Geo-Mar Letters, 2011, Vol. 31(4), pp. 271–283, doi: 10.1007/s00367-011-0232-4.

  13. Lima A.F, Faugères J.C., and Mahiques M. The Oligocene–Neogene deep-sea Columbia Channel system in the South Brazilian Basin: Seismic stratigraphy and environmental changes. Marine Geology, 2009, Vol. 266, pp. 18–41, https://doi.org/10.1016/j.margeo.2009.07.009.

  14. Mackensen A., Fütterer D., Grobe H., and Schmiedl G. Benthic foraminiferal assemblages from the eastern South Atlantic Polar Front region between 35° and 57°S: Distribution, ecology and fossilization potential. Marine Micropaleontology, 1993, Vol. 22, pp. 33–69, doi: 10.1016/0377-8398(93)90003-G.

  15. Malinverno E., Maffioli P., and Gariboldi K. Latitudinal distribution of extant fossilizable phytoplankton in the Southern Ocean: Planktonic provinces, hydrographic fronts and palaeoecological perspectives. Marine Micropaleontology, 2016, Vol. 123, pp. 41–58, https://doi.org/10.1016/j.marmicro.2016.01.001.

  16. McCave I.N., Manighetti B., and Beveridge N.A.S. Circulation in the glacial North-Atlantic inferred from grain-size measurements. Nature, 1995, Vol. 374, No. 6518, pp. 149–152, doi: 10.1038/374149a0.

  17. Murdmaa I.O., Roslyakov A.G., and Borisov D.G. Erozionno-akkumulyativnye processy v severnom sektore konturitovoj sistemy kontinentalnogo sklona Patagonii. Okeanologicheskie issledovaniya, 2018, Vol. 46, No. 3, pp. 193–213.

  18. Nishi H., Norris R.D., and Okada H. Paleoceanographic changes in the dynamics ofsubtropical Atlantic surface conditions at hole 997A. Proc. Ocean Drill. Program Sci. Results, 2000, Vol. 164, pp. 343–363.

  19. Olguin H.F. and Alder V.A. Species composition and biogeography of diatoms in Antarctic and subantarctic (Argentine shelf) waters (37–76°S). Deep-Sea Res., 2011, Vol. 58(1-2), pp. 139–152, doi: 10.1016/j.dsr2.2010.09.031

  20. Olguin H.F., Alder V.A., Puig A., and Boltowskoi D. Latitudinal diversity patterns of diatoms in the Southwestern Atlantic and Antarctic waters. J. Plankton Res., 2015, Vol. 37(4), pp. 1–7, doi:10.1093/plankt/fbv042.

  21. Peterson R.G. and Stramma L. Upper-level circulation in theSouth Atlantic Ocean. Prog. Oceanogr., 1991, Vol. 26, pp. 1–73, https://doi.org/10.1016/0079-6611(91)90006-8.

  22. Petelin V.P. Granulometricheskii analiz donnykh osadkov (Granulometric analysis of the bottom sediments). Мoscow: Nauka, 1967, 128 p.

  23. Pujol C. Cenozoic planktonic foraminiferal biostratigraphy of the Southwestern Atlantic (Rio Grande Rise). Deep Sea Drilling Project Leg 72. In: Barker P.F., Carlson R.L., Johnson D.A. et al. (Eds.). Initial Reports of DSDP, Leg 72. Washington: U.S. Goverment Printing Office, 1983, pp. 623–673.

  24. Rasmussen T.L., Thomsen E., Troelstra S.R., Kuijpers A., and Prins M.A. Millennial-scale glacial variability versus Holocene stability: Changes in planktic and benthic foraminifera faunas and ocean circulation in the North Atlantic during the last 60,000 years. Mar. Micropaleontol, 1983, Vol. 47, pp. 143–176, doi: 10.1016/S0377-8398(02)00115-9.

  25. Reimer P.J., Bard E., Baylis A., et al. Intcal13 and Marine13 Radiocarbon Age Calibration Curves 0-50,000 Years Cal BP. Radiocarbon, 2013, Vol. 55(4), pp. 1869–1887, https://doi.org/10.2458/azu_js_rc.55.16947.

  26. Stuiver M., Reimer P.J., and Reimer R.W. CALIB 7.1 [WWW program] at http://calib.org (Last accessed 2018-9-27).

  27. Suto I., Kawamura K., and Chiyonobu S. Pliocene and Pleistocene diatom floras and taxonomic notes from the Canterbury Basin (IODP Expedition 317 Hole U1352B), off New Zealand. InFulthorpe C.S., Hoyanagi K., Blum P. et al. Proc. IODP, 317. Tokyo: Integrated Ocean Drilling Program Management International, Inc., 2013, doi: 10.2204/iodp. proc.317.202.2013.

  28. Winter A., Henderiks J., Beaufort L., Rickaby R.E.M., and Brown C.W. Poleward expansion of the coccolithophore Emilianiahuxleyi. Journal of Plankton Research, 2014, Vol. 36, Iss. 2, pp. 316–325, https://doi.org/10.1093/plankt/fbt110.

  29. Zielinski U. and Gersonde R. Plio–Pleistocene diatom biostratigraphy from ODP Leg 177, Atlantic sector of the Southern Ocean. Mar. Micropaleontol., 2002, Vol. 45, pp. 225– 268, https://doi.org/10.1016/S0377-8398(02)00031-2.

  30. Zielinski U., Bianchi C., Gersonde R., and Kunz-Pirrung M. Last occurrence datums of the diatoms Rouxialeventerae and R. constricta—indicators for marine isotope Stages 6 and 8 in Southern Ocean sediments. Mar. Micropaleontol., 2003, Vol. 46, pp. 127–137, https://doi.org/10.1016/S0377-8398(02)00042-7.

Downloads

Published

2020-05-13

Issue

Vol. 48 No. 1 (2020): Journal of Oceanological Research

Section

Marine geology, geophysics and geochemistry

License

Transfer of copyrights occurs on the basis of a license agreement between the Author and Shirshov Institute of Oceanology, RAS

Most read articles by the same author(s)