Cenozoic sedimentary history of the northern Argentine continental slope, off Bahia Blanca, the location of the Ewing Terrace: Palaeogeodynamic and palaeoceanographic implications
New insights into the Cenozoic depositional architecture based on the seismic stratigraphy of the northern Argentine continental slope, off Bahia Blanca, allow us to reconstruct its sedimentary evolution. Five major seismic boundaries, B1 to B5 (from oldest to youngest) represent the main discontinu...
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ftconicet:oai:ri.conicet.gov.ar:11336/159511 2023-10-09T21:51:04+02:00 Cenozoic sedimentary history of the northern Argentine continental slope, off Bahia Blanca, the location of the Ewing Terrace: Palaeogeodynamic and palaeoceanographic implications Ercilla, Gemma Schwenk, Tilmann Bozzano, Graziella Spiess, Volkhard Violante, Roberto Antonio Estrada, Ferran Ianniccheri, Federica Spoltore, Daniela Veronica Alonso, Belén application/pdf http://hdl.handle.net/11336/159511 eng eng Elsevier Science info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0025322719302361 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.margeo.2019.106028 http://hdl.handle.net/11336/159511 Ercilla, Gemma; Schwenk, Tilmann; Bozzano, Graziella; Spiess, Volkhard; Violante, Roberto Antonio; et al.; Cenozoic sedimentary history of the northern Argentine continental slope, off Bahia Blanca, the location of the Ewing Terrace: Palaeogeodynamic and palaeoceanographic implications; Elsevier Science; Marine Geology; 417; 11-2019; 1-17 0025-3227 1872-6151 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ARGENTINE CONTINENTAL MARGIN CENOZOIC SEDIMENTARY HISTORY CONTOURITES EWING TERRACE SEISMIC STRATIGRAPHY https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1016/j.margeo.2019.106028 2023-09-24T20:10:39Z New insights into the Cenozoic depositional architecture based on the seismic stratigraphy of the northern Argentine continental slope, off Bahia Blanca, allow us to reconstruct its sedimentary evolution. Five major seismic boundaries, B1 to B5 (from oldest to youngest) represent the main discontinuities bounding six seismic units: I (Eocene), II (Oligocene to early Miocene), III (middle Miocene), IV (late Miocene), V (Pliocene), and VI (Quaternary). These units comprise deposits and features (mass-flow deposits, (hemi)pelagites and/or lowdensity turbidites, contourite drifts and moats, sediment waves, and canyon deposits), of which, through time, the contourites are ubiquitous. The depositional stratigraphic architecture reflects the expansion and relocation of the contourites, which are used to divide the sedimentation history into three major periods: Eocene to Early Miocene; Middle Miocene; and Late Miocene to Recent. Each period is interpreted as having occurred in response to palaeoceanographic changes in the Southern Component Deep Water (SCDW). These changes were regulated by palaeogeodynamic variations, regionally related to the Andean orogeny and remotely related to the opening stages of the Drake Passage and Central American Seaway, as well as the consequent increases in deep-water flux to the southern Atlantic. Additionally, we also consider their interplay with local and global sea-level changes. These three main periods reveal changes in the alongslope dynamics of the SCDW on the Argentine continental slope. Fil: Ercilla, Gemma. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España Fil: Schwenk, Tilmann. Universitat Bremen; Alemania Fil: Bozzano, Graziella. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval. Departamento Oceanografía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Spiess, Volkhard. Universitat Bremen; Alemania Fil: Violante, Roberto Antonio. Ministerio de Defensa. Armada Argentina. ... Article in Journal/Newspaper Drake Passage CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Argentina Argentine Armada Argentina ENVELOPE(-58.000,-58.000,-85.000,-85.000) Drake Passage Ercilla ENVELOPE(-54.683,-54.683,-63.400,-63.400) Ewing ENVELOPE(-61.257,-61.257,-69.924,-69.924) Violante ENVELOPE(-60.754,-60.754,-72.539,-72.539) Marine Geology 417 106028 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
ARGENTINE CONTINENTAL MARGIN CENOZOIC SEDIMENTARY HISTORY CONTOURITES EWING TERRACE SEISMIC STRATIGRAPHY https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
ARGENTINE CONTINENTAL MARGIN CENOZOIC SEDIMENTARY HISTORY CONTOURITES EWING TERRACE SEISMIC STRATIGRAPHY https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Ercilla, Gemma Schwenk, Tilmann Bozzano, Graziella Spiess, Volkhard Violante, Roberto Antonio Estrada, Ferran Ianniccheri, Federica Spoltore, Daniela Veronica Alonso, Belén Cenozoic sedimentary history of the northern Argentine continental slope, off Bahia Blanca, the location of the Ewing Terrace: Palaeogeodynamic and palaeoceanographic implications |
topic_facet |
ARGENTINE CONTINENTAL MARGIN CENOZOIC SEDIMENTARY HISTORY CONTOURITES EWING TERRACE SEISMIC STRATIGRAPHY https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
New insights into the Cenozoic depositional architecture based on the seismic stratigraphy of the northern Argentine continental slope, off Bahia Blanca, allow us to reconstruct its sedimentary evolution. Five major seismic boundaries, B1 to B5 (from oldest to youngest) represent the main discontinuities bounding six seismic units: I (Eocene), II (Oligocene to early Miocene), III (middle Miocene), IV (late Miocene), V (Pliocene), and VI (Quaternary). These units comprise deposits and features (mass-flow deposits, (hemi)pelagites and/or lowdensity turbidites, contourite drifts and moats, sediment waves, and canyon deposits), of which, through time, the contourites are ubiquitous. The depositional stratigraphic architecture reflects the expansion and relocation of the contourites, which are used to divide the sedimentation history into three major periods: Eocene to Early Miocene; Middle Miocene; and Late Miocene to Recent. Each period is interpreted as having occurred in response to palaeoceanographic changes in the Southern Component Deep Water (SCDW). These changes were regulated by palaeogeodynamic variations, regionally related to the Andean orogeny and remotely related to the opening stages of the Drake Passage and Central American Seaway, as well as the consequent increases in deep-water flux to the southern Atlantic. Additionally, we also consider their interplay with local and global sea-level changes. These three main periods reveal changes in the alongslope dynamics of the SCDW on the Argentine continental slope. Fil: Ercilla, Gemma. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España Fil: Schwenk, Tilmann. Universitat Bremen; Alemania Fil: Bozzano, Graziella. Ministerio de Defensa. Armada Argentina. Servicio de Hidrografía Naval. Departamento Oceanografía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Spiess, Volkhard. Universitat Bremen; Alemania Fil: Violante, Roberto Antonio. Ministerio de Defensa. Armada Argentina. ... |
format |
Article in Journal/Newspaper |
author |
Ercilla, Gemma Schwenk, Tilmann Bozzano, Graziella Spiess, Volkhard Violante, Roberto Antonio Estrada, Ferran Ianniccheri, Federica Spoltore, Daniela Veronica Alonso, Belén |
author_facet |
Ercilla, Gemma Schwenk, Tilmann Bozzano, Graziella Spiess, Volkhard Violante, Roberto Antonio Estrada, Ferran Ianniccheri, Federica Spoltore, Daniela Veronica Alonso, Belén |
author_sort |
Ercilla, Gemma |
title |
Cenozoic sedimentary history of the northern Argentine continental slope, off Bahia Blanca, the location of the Ewing Terrace: Palaeogeodynamic and palaeoceanographic implications |
title_short |
Cenozoic sedimentary history of the northern Argentine continental slope, off Bahia Blanca, the location of the Ewing Terrace: Palaeogeodynamic and palaeoceanographic implications |
title_full |
Cenozoic sedimentary history of the northern Argentine continental slope, off Bahia Blanca, the location of the Ewing Terrace: Palaeogeodynamic and palaeoceanographic implications |
title_fullStr |
Cenozoic sedimentary history of the northern Argentine continental slope, off Bahia Blanca, the location of the Ewing Terrace: Palaeogeodynamic and palaeoceanographic implications |
title_full_unstemmed |
Cenozoic sedimentary history of the northern Argentine continental slope, off Bahia Blanca, the location of the Ewing Terrace: Palaeogeodynamic and palaeoceanographic implications |
title_sort |
cenozoic sedimentary history of the northern argentine continental slope, off bahia blanca, the location of the ewing terrace: palaeogeodynamic and palaeoceanographic implications |
publisher |
Elsevier Science |
url |
http://hdl.handle.net/11336/159511 |
long_lat |
ENVELOPE(-58.000,-58.000,-85.000,-85.000) ENVELOPE(-54.683,-54.683,-63.400,-63.400) ENVELOPE(-61.257,-61.257,-69.924,-69.924) ENVELOPE(-60.754,-60.754,-72.539,-72.539) |
geographic |
Argentina Argentine Armada Argentina Drake Passage Ercilla Ewing Violante |
geographic_facet |
Argentina Argentine Armada Argentina Drake Passage Ercilla Ewing Violante |
genre |
Drake Passage |
genre_facet |
Drake Passage |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0025322719302361 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.margeo.2019.106028 http://hdl.handle.net/11336/159511 Ercilla, Gemma; Schwenk, Tilmann; Bozzano, Graziella; Spiess, Volkhard; Violante, Roberto Antonio; et al.; Cenozoic sedimentary history of the northern Argentine continental slope, off Bahia Blanca, the location of the Ewing Terrace: Palaeogeodynamic and palaeoceanographic implications; Elsevier Science; Marine Geology; 417; 11-2019; 1-17 0025-3227 1872-6151 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1016/j.margeo.2019.106028 |
container_title |
Marine Geology |
container_volume |
417 |
container_start_page |
106028 |
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1779314172423569408 |