Sedimentary growth pattern on the northern Argentine slope: The impact of North Atlantic Deep Water on southern hemisphere slope architecture

Evolution of the northern Argentine margin during the Cenozoic controlled by bottom current dynamics and gravitational processes

“…At the Argentine shelf, the Oligocene to middle Miocene sequence (AR4–AR5) is very thin while the clinoform‐like structures as observed in profile BGR 98‐32 (Figure , SP 2500–3500) and further north [ Preu et al ., ] suggest a shallow marine depositional environment as observed for subaqueous delta deposits [ Palamenghi et al ., ]. The inferred shallow environment on the slope and the nondeposition on the shelf is consistent with a relative sea level low stand in the late Oligocene [ Miller et al ., ].…”

Oceanic density fronts steering bottom-current induced sedimentation deduced from a 50 ka contourite-drift record and numerical modeling (off NW Spain)

“…They are also sensitively responding to the global ocean-current circulation as a major component in the climatic system, and to the variability of regional water masses in particular (e.g., Hernandez-Molina et al, 2011;Preu et al, 2012). This linkage, combined with their capability to store a high portion of continent-derived material, makes them a premium environmental archive for the reconstruction of past climatic variability (Llave et al, 2006;Voelker et al, 2006;Knutz, 2008).…”

IODP workshop: developing scientific drilling proposals for the Argentina Passive Volcanic Continental Margin (APVCM) – basin evolution, deep biosphere, hydrates, sediment dynamics and ocean evolution

“…However, a number of papers published since 2009 reported new high-resolution and/or multichannel seismic surveys (Fig. 4), often combined with multi-beam bathymetric data, which show the common occurrence of layered sediments and prominent sediment drifts on the Argentine and adjacent Uruguayan margins (e.g., Hernández-Molina et al, 2009Violante et al, 2010, Krastel et al, 2011Lastras et al, 2011;Muñoz et al, 2012;Grützner et al, 2011Grützner et al, , 2012Grützner et al, , 2016Preu et al, 2012Preu et al, , 2013Voigt et al, 2013;Uenzelmann-Neben et al, 2016; see also Hinz et al, 1999). There has also been significant progress studying the climatic records in surficial and near-surface sediments recovered in sediment cores from the Argentine margin (e.g., Chiessi et al, 2007;Bozzano et al, 2011;Govin et al, 2012;Bender et al, 2013;Razik et al, 2013;Razik, 2014;García Chapori et al, 2014, demonstrating that this margin also contains important modern sedimentary deposits.…”

“…Climate deterioration continued into the late Miocene, leading to the initiation and growth of the West Antarctic Ice Sheet (Shevenell et al, 2004). Climatic deterioration has continued into the Pleistocene although the major current systems that were established between the end of the Miocene and the late Pliocene appear to have continued to the present day (Hernández-Molina et al, 2009;Preu et al, 2012Preu et al, , 2013. However, factors other than ocean currents have also been important to the development of the margin, including sea level change, climate variability and glaciation and uplift in the Andes Grützner et al, 2011 and.…”