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The high-supply, current-dominated continental margin of southeastern South America during the late Quaternary

Published online by Cambridge University Press:  20 January 2017

Hendrik Lantzsch ,
Till J.J. Hanebuth ,
Cristiano M. Chiessi ,
Tilmann Schwenk  and
Roberto A. Violante
Hendrik Lantzsch*
Affiliation:
MARUM — Center for Marine Environmental Sciences and Faculty of Geosciences, University of Bremen, P.O. Box 330 440, 28334 Bremen, Germany
Till J.J. Hanebuth
Affiliation:
MARUM — Center for Marine Environmental Sciences, University of Bremen, Germany
Cristiano M. Chiessi
Affiliation:
School of Arts, Sciences and Humanities, University of Sao Paulo, Brazil
Tilmann Schwenk
Affiliation:
MARUM — Center for Marine Environmental Sciences and Faculty of Geosciences, University of Bremen, Germany
Roberto A. Violante
Affiliation:
Servicio de Hidrografía Naval, Buenos Aires, Argentina
*
*Corresponding author. Fax: + 49 421 218 65219. E-mail address:[email protected] (H. Lantzsch).
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Abstract

The continental margin off the La Plata Estuary (SE South America) is characterized by high fluvial sediment supply and strong ocean currents. High-resolution sediment-acoustic data combined with sedimentary facies analysis, AMS-14C ages, and neodymium isotopic data allowed us to reconstruct late Quaternary sedimentary dynamics in relation to the two major sediment sources, the La Plata Estuary and the Argentine margin. Sediments from these two provinces show completely different dispersal patterns. We show that the northward-trending La Plata paleo-valley was the sole transit path for the huge volumes of fluvial material during lower sea levels. In contrast, material from the Argentine margin sector was transported northwards by the strong current system. Despite the large sediment volumes supplied by both sources, wide parts of the shelf were characterized by either persistent non-deposition or local short-term depocenter formation. The location and formation history of these depocenters were primarily controlled by the interplay of sea level with current strength and local morphology. The high sediment supply was of secondary importance to the stratigraphic construction, though locally resulting in high sedimentation rates. Thus, the shelf system off the La Plata Estuary can be considered as a hydrodynamic-controlled end-member.

Keywords

Marine depocentersSedimentary pathwaysCurrent controlSource to sinkSoutheastern South AmericaSouthwest AtlanticWater massesLate Quaternary
Type
Research Article
Information
Quaternary Research , Volume 81 , Issue 2 , March 2014 , pp. 339 - 354
Copyright
University of Washington

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References

Ayup, R.N. Intercâmbio Sedimentar entre o Río de La Plata Exterior e a Plataforma Continental Adjacente. Pesquisas 19, (1987). 105–126.Google Scholar
Baker, P.A., Fritz, S.C., Burns, S.J., Ekdahl, E., and Rigsby, C.A. The nature and origin of decadal to millennial scale climate variability in the southern tropics of South America: the Holocene record of Lago Umayo, Peru. Vimeux, F., Sylvestre, F., and Khodri, M. Past Climate Variability in South America and Surrounding Regions. (2009). Springer, 301–322.Google Scholar
Behling, H., and Safford, H.D. Late-glacial and Holocene vegetation, climate and fire dynamics in the Serra dos Órgãos, Rio de Janeiro State, southeastern Brazil. Global Change Biology 16, 6 (2010). 1661–1671.CrossRefGoogle Scholar
Behling, H., Pillar, V.D., Orloic, L., and Bauermann, S.G. Late Quaternary Araucaria forest, grassland (Campos), fire and climate dynamics, studied by high-resolution pollen, charcoal and multivariate analysis of the Cambara do Sul core in southern Brazil. Palaeogeography, Palaeoclimatology, Palaeoecology 203, 3–4 (2004). 277–297.Google Scholar
Bender, V., Hanebuth, T.J.J., and Chiessi, C.M. Holocene shifts of the Subtropical Shelf Front off southeastern South America controlled by high and low latitude forcing. Paleoceanography 28, 1–10 (2013). http://dx.doi.org/10.1002/palo.20044Google Scholar
Blair, T.C., and McPherson, J.G. Grain-size and textural classification of coarse sedimentary particles. Journal of Sedimentary Research 69, 1 (1999). 6–19.Google Scholar
Bleil, U. and cruise participants, (2001). Geo Bremen South Atlantic 1999/2000. Part 3, Cruise No. 46, Leg 3, Montevideo–Mar del Plata, 4 January–7 February 2000. Meteor-Berichte, 01-1.Google Scholar
Bracco, R., Inda, H., del Puerto, L., Castiñeira, C., Sprechmann, P., and García�a-Rodríguez, F. Relationships between Holocene sea-level variations, trophic development, and climatic change in Negra Lagoon, Southern Uruguay. Journal of Paleolimnology 33, 3 (2005). 253–263.Google Scholar
Carter, L., and Cortese, G. Change in the Southern Ocean: responding to Antarctica. Brigham-Grette, J., Powell, R., Newman, L., and Kiefer, T. PAGES News: Change at the Poles, A Paleoscience Perspective. (2009). PAGES International Project Office, 30–32.Google Scholar
Castillo, L.A.L., Kazmierczak, T.D., and Chemale, F. Rio Grande Cone tectono-stratigraphic model — Brazil: seismic sequences. Earth Sciences Research Journal 13, 1 (2009). 42–53.Google Scholar
Catuneanu, O., Galloway, W.E., Kendall, C.G.S.t.C., Miall, A.D., Posamentier, H.W., Strasser, A., and Tucker, M.E. Sequence stratigraphy: methodology and nomenclature. Newsletters on Stratigraphy 44, 3 (2011). 173–245.Google Scholar
Cavallotto, J.L., and Violante, R.A. Geología y Geomorfología del Río de la Plata. De Barrio, R., Etcheverry, R.O., Caballé, M.F., and Llambías, E. Geología y recursos minerales de la Provincia de Buenos Aires. Relatorio XVI Congreso Geológico Argentino, La Plata, Cap. XIV (2005). 237–253.Google Scholar
Cavallotto, J.L., Violante, R.A., and Parker, G. Sea-level fluctuations during the last 8600 years in the de la Plata river (Argentina). Quaternary International 114, 1 (2004). 155–165.Google Scholar
Cawthra, H.C., Neumann, F.H., Uken, R., Smith, A.M., Guastella, L.A., and Yates, A. Sedimentation on the narrow (8 km wide), oceanic current-influenced continental shelf off Durban, Kwazulu-Natal, South Africa. Marine Geology 323–325, 0 (2012). 107–122.CrossRefGoogle Scholar
Chiessi, C.M., Mulitza, S., Paul, A., Pätzold, J., Groeneveld, J., and Wefer, G. South Atlantic interocean exchange as the trigger for the Bølling warm event. Geology 36, 12 (2008). 919–922.Google Scholar
Cordeiro, S., and Lorscheitter, M. Palynology of Lagoa dos Patos sediments, Rio Grande do Sul, Brazil. Journal of Paleolimnology 10, 1 (1994). 35–42.Google Scholar
Cruz, F.W., Burns, S.J., Karmann, I., Sharp, W.D., Vuille, M., Cardoso, A.O., Ferrari, J.A., Dias, P.L.S., and Viana, O. Insolation-driven changes in atmospheric circulation over the past 116,000 years in subtropical Brazil. Nature 434, 7029 (2005). 63–66.Google Scholar
Cruz, F.W., Burns, S.J., Jercinovic, M., Karmann, I., Sharp, W.D., and Vuille, M. Evidence of rainfall variations in Southern Brazil from trace element ratios (Mg/Ca and Sr/Ca) in a Late Pleistocene stalagmite. Geochimica et Cosmochimica Acta 71, 9 (2007). 2250–2263.Google Scholar
Csanady, G.T. The arrested topographic wave. Journal of Physical Oceanography 8, 1 (1978). 47–62.Google Scholar
Curry, W.B., and Oppo, D.W. Glacial water mass geometry and the distribution of δ13C of ΣCO2 in the western Atlantic Ocean. Paleoceanography 20, 1 (2005). PA1017 http://dx.doi.org/10.1029/2004pa001021Google Scholar
Depetris, P.J., and Griffin, J.J. Suspended load in Rio de la Plata drainage basin. Sedimentology 11, 1–2 (1968). 53–60.Google Scholar
Ewing, M., and Lonardi, A.G. Sediment transport and distribution in the Argentine Basin. 5. Sedimentary structure of the Argentine margin, basin, and related provinces. Physics and Chemistry of the Earth 8, (1971). 123–251.Google Scholar
Flemming, B.W. Factors controlling shelf sediment dispersal along the southeast African continental margin. Marine Geology 42, 1–4 (1981). 259–277.CrossRefGoogle Scholar
Fontana, R. Geotectônica e sismoestratigrafia da Bacia de Pelotas e Plataforma de Florianópolis. (Ph.D. thesis) (1996). Universidade Federal do Rio Grande do Sul, Google Scholar
García�a-Rodríguez, F., Metzeltin, D., Sprechmann, P., Trettin, R., Stams, G., and Beltrán-Morales, L.F. Upper Pleistocene and Holocene paleosalinity and trophic state changes in relation to sea level variation in Rocha Lagoon, southern Uruguay. Journal of Paleolimnology 32, 2 (2004). 117–135.Google Scholar
General Bathymetric Chart of the Oceans (GEBCO), http://www.gebco.net (2008). Google Scholar
Georgi, D.T. On the relationship between the large-scale property variations and fine structure in the circumpolar deep water. Journal of Geophysical Research 86, C7 (1981). 6556–6566.Google Scholar
Goldstein, S.L., O'Nions, R.K., and Hamilton, P.J. A Sm–Nd isotopic study of atmospheric dusts and particulates from major river systems. Earth and Planetary Science Letters 70, 2 (1984). 221–236.Google Scholar
Guerrero, R.A., Acha, E.M., Framinan, M.B., and Lasta, C.A. Physical oceanography of the Río de la Plata Estuary, Argentina. Continental Shelf Research 17, 7 (1997). 727–742.Google Scholar
Guilderson, T.P., Burckle, L., Hemming, S., and Peltier, W.R. Late Pleistocene sea level variations derived from the Argentine Shelf. Geochemistry, Geophysics, Geosystems 1, 12 (2000). 1055 http://dx.doi.org/10.1029/2000GC000098Google Scholar
Gwilliam, C.S., Coward, A.C., de Cuevas, B.A., Webb, D.J., Rourke, E., Thompson, S.R., and Döös, K. The OCCAM global model. García�a, F.G., Cisneros, G., Fernández, A.E., and Álvarez, R. Numerical Simulations in the Environmental and Earth Sciences: Proceedings of the Second UNAM-CRAY Supercomputing Conference. (1997). Elsevier Inc., 299 Google Scholar
Gyllencreutz, R., Mahiques, M.M., Alves, D.V.P., and Wainer, I.K.C. Mid- to late-Holocene paleoceanographic changes on the southeastern Brazilian shelf based on grain size records. Holocene 20, 6 (2010). 863–875.Google Scholar
Hanebuth, T.J.J., Stattegger, K., and Bojanowski, A. Termination of the last glacial maximum sea-level lowstand: the Sunda-Shelf data revisited. Global and Planetary Change 66, 1–2 (2009). 76–84.CrossRefGoogle Scholar
Hanebuth, T.J.J., Voris, H.K., Yokoyama, Y., Saito, Y., and Okuno, J.i Formation and fate of sedimentary depocenters on Southeast Asia's Sunda Shelf over the past sea-level cycle and biogeographic implications. Earth-Science Reviews 104, 1–3 (2011). 92–110.Google Scholar
Harris, P.T., and Whiteway, T. Global distribution of large submarine canyons: geomorphic differences between active and passive continental margins. Marine Geology 285, 1–4 (2011). 69–86.Google Scholar
Hernández-Molina, F.J., Paterlini, M., Violante, R., Marshall, P., de Isasi, M., Somoza, L., and Rebesco, M. Contourite depositional system on the Argentine Slope: an exceptional record of the influence of Antarctic water masses. Geology 37, 6 (2009). 507–510.Google Scholar
Hübscher, C., Figueiredo, A.G., Kruse, L., and Spieß, V. High-resolution analysis of the deposition pattern on the Amazon sub-aquatic delta and outer continental shelf. Marine Geophysical Researches 23, 3 (2002). 209–222.Google Scholar
Ikehara, K. The Kuroshio-generated bedform system in the Osumi Strait, Southern Kyushu, Japan. Taira, A., and Masuda, F. Sedimentary Facies in the Active Plate Margin. (1989). Terra Scientific Publishing Company, Tokyo. 261–273.Google Scholar
Innocent, C., Fagel, N., and Hillaire-Marcel, C. Sm–Nd isotope systematics in deep-sea sediments: clay-size versus coarser fractions. Marine Geology 168, 1–4 (2000). 79–87.Google Scholar
Krastel, S. and cruise participants, (2012). Sediment transport off Uruguay and Argentina: From the shelf to the deep sea. 19.05.2009–06.07.2009, Montevideo (Uruguay) – Montevideo (Uruguay). Berichte, Fachbereich Geowissenschaften, Universität Bremen. 285.Google Scholar
Kuehl, S.A., Levy, B.M., Moore, W.S., and Allison, M.A. Subaqueous delta of the Ganges-Brahmaputra river system. Marine Geology 144, 1–3 (1997). 81–96.Google Scholar
Laborde, J.L. Sand deposits of the outer Río de la Plata and adjacent continental shelf. Martins, L.R., and Santana, C.I. Non Living Resources of the Southern Brazilian Coastal Zone and Continental Margin. (1999). Google Scholar
Laskar, J., Robutel, P., Joutel, F., Gastineau, M., Correia, A.C.M., and Levrard, B. A long-term numerical solution for the insolation quantities of the Earth. Astronomy & Astrophysics 428, 1 (2004). 261–285.CrossRefGoogle Scholar
Lonardi, A.G., and Ewing, M. Sediment transport and distribution in the Argentine Basin. 4. Bathymetry of the continental margin, Argentine Basin and other related provinces. Canyons and sources of sediments. Physics and Chemistry of the Earth 8, (1971). 79–121.Google Scholar
Long, A. Mid-Holocene sea-level change and coastal evolution. Progress in Physical Geography 25, 3 (2001). 399–408.Google Scholar
Mahiques, M.M., Tassinari, C.C.G., Marcolini, S., Violante, R.A., Figueira, R.C.L., da Silveira, I.C.A., Burone, L., and de Mello e Sousa, S.H. Nd and Pb isotope signatures on the Southeastern South American upper margin: implications for sediment transport and source rocks. Marine Geology 250, 1–2 (2008). 51–63.CrossRefGoogle Scholar
Mahiques, M.M., Coaracy Wainer, I.K., Burone, L., Nagai, R., de Mello e Sousa, S.H., Lopes Figueira, R.C., Almeida da Silveira, I.C., Bícego, M.C., Vicente Alves, D.P., and Hammer, Ø. A high-resolution Holocene record on the Southern Brazilian shelf: paleoenvironmental implications. Quaternary International 206, 1–2 (2009). 52–61.Google Scholar
Marchant, R., and Hooghiemstra, H. Rapid environmental change in African and South American tropics around 4000 years before present: a review. Earth-Science Reviews 66, 3–4 (2004). 217–260.CrossRefGoogle Scholar
Marchitto, T.M., Curry, W.B., and Oppo, D.W. Millennial-scale changes in North Atlantic circulation since the last glaciation. Nature 393, 6685 (1998). 557–561.CrossRefGoogle Scholar
Martínez, S., and Rojas, A. Relative sea level during the Holocene in Uruguay. Palaeogeography, Palaeoclimatology, Palaeoecology 374, (2013). 123–131.CrossRefGoogle Scholar
Martins, L.R., and Corrêa, I.C.S. Atlas Morphology and Sedimentology of the Southwest Atlantic Coastal Zone and Continental Shelf from Cabo Frio (Brazil) and Peninsula Valdés (Argentina). (1996). Universidade Federal do Rio Grande do Sul, Brazil.Google Scholar
Martins, L.R., Urien, C.M., and Martins, I.R. Gênese dos Sedimentos da Plataforma Continental Atlântica entre o Rio Grande do Sul (Brasil) e Tierra del Fuego (Argentina). Gravel 3, (2005). 85–102.Google Scholar
Milliman, J.D., and Farnsworth, K.L. River Discharge to the Coastal Ocean: A Global Synthesis. (2011). Elsevier Inc., Cambridge.CrossRefGoogle Scholar
Möller, O.O., Piola, A.R., Freitas, A.C., and Campos, E.J.D. The effects of river discharge and seasonal winds on the shelf off southeastern South America. Continental Shelf Research 28, 13 (2008). 1607–1624.Google Scholar
Oppo, D.W., and Fairbanks, R.G. Variability in the deep and intermediate water circulation of the Atlantic Ocean during the past 25,000 years: Northern Hemisphere modulation of the Southern Ocean. Earth and Planetary Science Letters 86, 1 (1987). 1–15.Google Scholar
Palma, E.D., Matano, R.P., and Piola, A.R. A numerical study of the Southwestern Atlantic Shelf circulation: stratified ocean response to local and offshore forcing. Journal of Geophysical Research 113, C11 (2008). C11010 Google Scholar
Parker, G., Violante, R.A., Paterlini, C.M., Costa, I.P., Marcolini, S.I., and Cavallotto, J.L. Las Secuencias Depositacionales del Plioceno-Cuaternario en la Plataforma Submarina adyacente al Litoral del Este Bonaerense. Latin American Journal of Sedimentology and Basin Analysis 15, 2 (2008). 105–124.Google Scholar
Peltier, W.R., and Fairbanks, R.G. Global glacial ice volume and Last Glacial Maximum duration from an extended Barbados sea level record. Quaternary Science Reviews 25, 23–24 (2006). 3322–3337.CrossRefGoogle Scholar
Piola, A.R., and Matano, R.P. Brazil and Falklands (Malvinas) Currents. John, H.S., Karl, K.T., and Steve, A.T. Encyclopedia of Ocean Sciences. (2001). Academic Press, Oxford. 340–349.Google Scholar
Piola, A.R., Campos, E.J.D., Möller, O.O. Jr., Charo, M., and Martinez, C. Subtropical Shelf Front off eastern South America. Geophysical Research Letters 105, C3 (2000). 6565–6578.Google Scholar
Piola, A.R., Möller, O.O. Jr., Guerrero, R.A., and Campos, E.J.D. Variability of the subtropical shelf front off eastern South America: winter 2003 and summer 2004. Continental Shelf Research 28, 13 (2008). 1639–1648.CrossRefGoogle Scholar
Preu, B., Schwenk, T., Hernández-Molina, F.J., Violante, R., Paterlini, M., Krastel, S., Tomasini, J., and Spieß, V. Sedimentary growth pattern on the northern Argentine slope: the impact of North Atlantic Deep Water on southern hemisphere slope architecture. Marine Geology 329–331, (2012). 113–125.Google Scholar
Preu, B., Hernández-Molina, F.J., Violante, R., Piola, A.R., Paterlini, C.M., Schwenk, T., Voigt, I., Krastel, S., and Spiess, V. Morphosedimentary and hydrographic features of the northern Argentine margin: the interplay between erosive, depositional and gravitational processes and its conceptual implications. Deep Sea Research Part I: Oceanographic Research Papers 75, (2013). 157–174.Google Scholar
Razik, S., Chiessi, C.M., Romero, O.E., and von Dobeneck, T. Interaction of the South American Monsoon System and the Southern Westerly Wind Belt during the last 14 kyr. Palaeogeography, Palaeoclimatology, Palaeoecology 374, (2013). 28–40.Google Scholar
Reimer, P.J., Baillie, M.G.L., Bard, E., Bayliss, A., Beck, J.W., Blackwell, P.G., Ramsey, C.B., Buck, C.E., Burr, G.S., Edwards, R.L., Friedrich, M., Grootes, P.M., Guilderson, T.P., Hajdas, I., Heaton, T.J., Hogg, A.G., Hughen, K.A., Kaiser, K.F., Kromer, B., McCormac, F.G., Manning, S.W., Reimer, R.W., Richards, D.A., Southon, J.R., Talamo, S., Turney, C.S.M., van der Plicht, J., and Weyhenmeyer, C.E. IntCal09 and Marine09 radiocarbon age calibration curves, 0–50,000 years cal BP. Radiocarbon 51, 4 (2009). 1111–1150.Google Scholar
Revel, M., Cremer, M., Grousset, F.E., and Labeyrie, L. Grain-size and Sr–Nd isotopes as tracer of paleo-bottom current strength, Northeast Atlantic Ocean. Marine Geology 131, 3–4 (1996). 233–249.Google Scholar
Sato, K., Tassinari, C.C.G., Kawashita, K., and Petronilho, L. A metodologia Sm–Nd no IGc-USP e suas aplicações. Anais da Academia Brasileira de Ciências 67, (1995). 313–336.Google Scholar
Saunders, P.M., and King, B.A. Oceanic fluxes on the WOCE A11 section. Journal of Physical Oceanography 25, 9 (1995). 1942–1958.Google Scholar
Schulz, H.D. and cruise participants, (2001). Geo Bremen South Atlantic 1999/2000. Part 2, Cruise No. 46, Leg 2, Recife-Montevideo, 2–29 December 1999. Meteor-Berichte 01-1.Google Scholar
Stoll, H.M., Vance, D., and Arevalos, A. Records of the Nd isotope composition of seawater from the Bay of Bengal: implications for the impact of Northern Hemisphere cooling on ITCZ movement. Earth and Planetary Science Letters 255, 1–2 (2007). 213–228.Google Scholar
Stuiver, M., Reimer, P.J., Bard, E., Beck, J.W., Burr, G.S., Hughen, K.A., Kromer, B., McCormac, G., Van der Plicht, J., and Spurk, M. INTCAL98 radiocarbon age calibration, 24,000–0 cal BP. Radiocarbon 40, 3 (1998). 1041–1083.Google Scholar
Sundborg, Å. The river Klarälven. A study of fluvial processes. Geografiska Annaler 38, (1956). 127–316.Google Scholar
Tossini, L. El sistema hidrográfico de la Cuenca del Rio de la Plata. Anales de la Sociedad Cientifica Argentina 167, (1959). 41–64.Google Scholar
Urien, C.M. Rio de la Plata estuary environments. Geological Society of America Memoir 133, (1972). 213–234.CrossRefGoogle Scholar
Urien, C.M., and Ewing, M. Recent sediments and environment of southern Brazil, Uruguay, Buenos Aires, and Rio Negro continental shelf. Burk, C.A., and Drake, C.L. The Geology of Continental Margins. (1974). Springer, New York. 157–177.Google Scholar
Urien, C.M., and Ottmann, F. Histoire du Rio de la Plata au Quaternaire. Quaternaria 14, (1971). 51–59.Google Scholar
Urien, C.M., Martins, L.R., and Martins, I.R. Evolução geológica do Quaternário do litoral atlântico uruguaio, plataforma continental e regiões vizinhas. Notas Técnicas 3, (1980). 7–43.Google Scholar
Urien, C.M., Martins, L.R., and Martins, I.R. Modelos deposicionais na plataforma continental do Rio Grande do Sul (Brasil), Uruguai e Buenos Aires. Notas Técnicas 3, (1980). 13–25.Google Scholar
Urien, C.M., Martins, L.R., and Cazenave, P. Late Quaternary geology of the Rio de la Plata, Buenos Aires — Rio Negro coastal plain and continental shelf. Encontro de Geologia do Cone Sul, 1° Resumos Expandidos. (1995). 273–274.Google Scholar
Van Wagoner, J.C., Posamentier, H.W., Mitchum, H.W., Vail, P.R., Sarg, J.F., Loutit, T.S., J, H., An overview of sequence stratigraphy and key definitions. Wilgus, C.K., Hastings, B.S., Kendall, C.G.S.C., Posamentier, H.W., Ross, C.A., and van Wagoner, J.C. Sea Level Changes — An Integrated Approach. Society of Economic Paleontologists and Mineralogists Special Publications 42, (1988). SEPM, Tulsa. 110–124.Google Scholar
Vance, D., and Thirlwall, M. An assessment of mass discrimination in MC-ICPMS using Nd isotopes. Chemical Geology 185, 3–4 (2002). 227–240.Google Scholar
Viana, A.R., Hercos, C.M., Almeida, W. Jr., Magalhães, J.L.C., and Andrade, S.B. Evidence of bottom current influence on the Neogene to Quaternary sedimentation along the Northern Campos Slope, SW Atlantic Margin. Stow, D.A.V., Pudsey, C.J., Howe, J.A., Faugeres, J.-C., and Viana, A.R. Deep-Water Contourite Systems: Modern Drifts and Ancient Series, Seismic and Sedimentary Characteristics. (2002). The Geological Society, London. 249–259.Google Scholar
Villwock, J.A. Geology of the coastal province of Rio Grande do Sul, southern Brazil. Pesquisas 16, 5–50 (1984). Google Scholar
Vimeux, F., Sylvestre, F., and Khodri, M. Past Climate Variability in South America and Surrounding Regions. (2009). Springer, Google Scholar
Violante, R.A., Paterlini, C.M., Costa, I.P., Hernández-Molina, F.J., Segovia, L.M., Cavallotto, J.L., Marcolini, S., Bozzano, G., Laprida, C., García�a Chapori, N., Bickert, T., and Spiess, V. Sismoestratigrafía y evolución geomorfológico del Talud Continental adyacente al litoral del este bonaerense, Argentina. Latin American Journal of Sedimentology and Basin Analysis 17, 1 (2010). 33–62.Google Scholar
Wefer, G. and cruise participants, (2001). Report and preliminary results of Metor cruise m 46/4. Mar Del Plata (Argentina) – Salvador (Brasil), February 10–March 13, (2000). Berichte, Fachbereich Geowissenschaften, Universität Bremen. (173).Google Scholar
Zavialov, P., Möller, O. Jr., and Campos, E. First direct measurements of currents on the continental shelf of Southern Brazil. Continental Shelf Research 22, 14 (2002). 1975–1986.Google Scholar