Glacial, fluvioglacial and fluvial sedimentary discharge in the northwestern coastal sectorof the Ross Sea continental margin since upper Miocene to LGM
The Borchgrevink Coast stretches from the Coulman Island northward to the Cape Adare for at least 200 km, bordering the western side of the northern Drygalski Trough. The early phase of the acquisition objectives of the PNRAProjectGlevors(GlacialEvolutioninthenorthwesternRossSea,offshoreNorthVictori...
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Copernicus; European Geophysical Society
2019
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Online Access: | http://hdl.handle.net/11567/980123 |
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ftunivgenova:oai:iris.unige.it:11567/980123 2024-01-28T10:01:40+01:00 Glacial, fluvioglacial and fluvial sedimentary discharge in the northwestern coastal sectorof the Ross Sea continental margin since upper Miocene to LGM Chiara Sauli Daniela Accettella Andrea Bergamasco Giuseppe Brancatelli Mihai Burca Martina Busetti Mauro Caffau Florence Colleoni Ester Colizza Nicola Corradi Vedrana Kovacevic Raffaella Tolotti Dino Viezzoli Massimo Zecchin Sauli, Chiara Accettella, Daniela Bergamasco, Andrea Brancatelli, Giuseppe Burca, Mihai Busetti, Martina Caffau, Mauro Colleoni, Florence Colizza, Ester Corradi, Nicola Kovacevic, Vedrana Tolotti, Raffaella Viezzoli, Dino Zecchin, Massimo 2019 ELETTRONICO http://hdl.handle.net/11567/980123 eng eng Copernicus; European Geophysical Society country:DEU place:Göttingen ispartofbook:Geophysical Research Abstracts Vol. 21, EGU2019 EGU General Assembly 2019 firstpage:9810-1 lastpage:9810-1 numberofpages:1 journal:GEOPHYSICAL RESEARCH ABSTRACTS http://hdl.handle.net/11567/980123 info:eu-repo/semantics/openAccess Antarctica Seismostratigraphy Ocenology Sedimentology Biostratigraphy Paleoenvironments Paleoclimate info:eu-repo/semantics/conferenceObject 2019 ftunivgenova 2024-01-03T17:59:30Z The Borchgrevink Coast stretches from the Coulman Island northward to the Cape Adare for at least 200 km, bordering the western side of the northern Drygalski Trough. The early phase of the acquisition objectives of the PNRAProjectGlevors(GlacialEvolutioninthenorthwesternRossSea,offshoreNorthVictoriaLand,Antarctica) was accomplished in the north western coastal sector of the Ross Sea continental margin along the Borchgrevink Coast, from Coulman Island to Cape Hallett. Single channel seismic and sub bottom profiles, swath bathymetry and gravity cores were collected during the Austral summer of 2016/2017, by the scientific research vessel OGS/Explora. The studied area along this segment of the Borchgrevink Coast documents, by the analysis and the interpretation of available geophysical, geological and oceanographic data, the paleo ice discharge and ice flowing patterns of the inferred Mariner-Borchgrevink and Tucker coastal glaciers, since at least the Upper Miocene until the Holocene Time. The repeated and possibly asynchronous oscillations of these valley glaciers from the North Victoria Land coast, at least about tens km offshore, and their interaction with fast flowing ice streams from the south are recorded. In particular, the analysis of the architecture and of the geometrical relationship of the interpreted seismic facies and units allows to infer past glacial and interglacial environments. Modelling of paleo environments and related climate condition is achieved despite the age constrain uncertainty of local seismic stratigraphy and of biostrathigraphic correlations to coeval sediment section in southern Ross Sea inner-shelf sector (McMurdo Sound), and besides the acoustic facies ambiguity due to not enough data resolution. The interpreted shallower and Holocene-Present glacial related features are simple or composite ice-marginal landforms, with overstepping smaller recessional deposits on top or behind. They testify the coastal glaciers grounded events and the ice retreat modality during the pre-LGM and the ... Conference Object Antarc* Antarctica Coulman Island McMurdo Sound Ross Sea Victoria Land Università degli Studi di Genova: CINECA IRIS Austral Ross Sea Victoria Land McMurdo Sound Hallett ENVELOPE(170.217,170.217,-72.317,-72.317) Drygalski ENVELOPE(-61.000,-61.000,-64.717,-64.717) Adare ENVELOPE(170.233,170.233,-71.283,-71.283) Cape Adare ENVELOPE(175.000,175.000,-71.000,-71.000) Cape Hallett ENVELOPE(170.217,170.217,-72.317,-72.317) Borchgrevink ENVELOPE(23.133,23.133,-72.117,-72.117) Coulman Island ENVELOPE(169.750,169.750,-73.467,-73.467) Borchgrevink Coast ENVELOPE(168.500,168.500,-73.000,-73.000) |
institution |
Open Polar |
collection |
Università degli Studi di Genova: CINECA IRIS |
op_collection_id |
ftunivgenova |
language |
English |
topic |
Antarctica Seismostratigraphy Ocenology Sedimentology Biostratigraphy Paleoenvironments Paleoclimate |
spellingShingle |
Antarctica Seismostratigraphy Ocenology Sedimentology Biostratigraphy Paleoenvironments Paleoclimate Chiara Sauli Daniela Accettella Andrea Bergamasco Giuseppe Brancatelli Mihai Burca Martina Busetti Mauro Caffau Florence Colleoni Ester Colizza Nicola Corradi Vedrana Kovacevic Raffaella Tolotti Dino Viezzoli Massimo Zecchin Glacial, fluvioglacial and fluvial sedimentary discharge in the northwestern coastal sectorof the Ross Sea continental margin since upper Miocene to LGM |
topic_facet |
Antarctica Seismostratigraphy Ocenology Sedimentology Biostratigraphy Paleoenvironments Paleoclimate |
description |
The Borchgrevink Coast stretches from the Coulman Island northward to the Cape Adare for at least 200 km, bordering the western side of the northern Drygalski Trough. The early phase of the acquisition objectives of the PNRAProjectGlevors(GlacialEvolutioninthenorthwesternRossSea,offshoreNorthVictoriaLand,Antarctica) was accomplished in the north western coastal sector of the Ross Sea continental margin along the Borchgrevink Coast, from Coulman Island to Cape Hallett. Single channel seismic and sub bottom profiles, swath bathymetry and gravity cores were collected during the Austral summer of 2016/2017, by the scientific research vessel OGS/Explora. The studied area along this segment of the Borchgrevink Coast documents, by the analysis and the interpretation of available geophysical, geological and oceanographic data, the paleo ice discharge and ice flowing patterns of the inferred Mariner-Borchgrevink and Tucker coastal glaciers, since at least the Upper Miocene until the Holocene Time. The repeated and possibly asynchronous oscillations of these valley glaciers from the North Victoria Land coast, at least about tens km offshore, and their interaction with fast flowing ice streams from the south are recorded. In particular, the analysis of the architecture and of the geometrical relationship of the interpreted seismic facies and units allows to infer past glacial and interglacial environments. Modelling of paleo environments and related climate condition is achieved despite the age constrain uncertainty of local seismic stratigraphy and of biostrathigraphic correlations to coeval sediment section in southern Ross Sea inner-shelf sector (McMurdo Sound), and besides the acoustic facies ambiguity due to not enough data resolution. The interpreted shallower and Holocene-Present glacial related features are simple or composite ice-marginal landforms, with overstepping smaller recessional deposits on top or behind. They testify the coastal glaciers grounded events and the ice retreat modality during the pre-LGM and the ... |
author2 |
Sauli, Chiara Accettella, Daniela Bergamasco, Andrea Brancatelli, Giuseppe Burca, Mihai Busetti, Martina Caffau, Mauro Colleoni, Florence Colizza, Ester Corradi, Nicola Kovacevic, Vedrana Tolotti, Raffaella Viezzoli, Dino Zecchin, Massimo |
format |
Conference Object |
author |
Chiara Sauli Daniela Accettella Andrea Bergamasco Giuseppe Brancatelli Mihai Burca Martina Busetti Mauro Caffau Florence Colleoni Ester Colizza Nicola Corradi Vedrana Kovacevic Raffaella Tolotti Dino Viezzoli Massimo Zecchin |
author_facet |
Chiara Sauli Daniela Accettella Andrea Bergamasco Giuseppe Brancatelli Mihai Burca Martina Busetti Mauro Caffau Florence Colleoni Ester Colizza Nicola Corradi Vedrana Kovacevic Raffaella Tolotti Dino Viezzoli Massimo Zecchin |
author_sort |
Chiara Sauli |
title |
Glacial, fluvioglacial and fluvial sedimentary discharge in the northwestern coastal sectorof the Ross Sea continental margin since upper Miocene to LGM |
title_short |
Glacial, fluvioglacial and fluvial sedimentary discharge in the northwestern coastal sectorof the Ross Sea continental margin since upper Miocene to LGM |
title_full |
Glacial, fluvioglacial and fluvial sedimentary discharge in the northwestern coastal sectorof the Ross Sea continental margin since upper Miocene to LGM |
title_fullStr |
Glacial, fluvioglacial and fluvial sedimentary discharge in the northwestern coastal sectorof the Ross Sea continental margin since upper Miocene to LGM |
title_full_unstemmed |
Glacial, fluvioglacial and fluvial sedimentary discharge in the northwestern coastal sectorof the Ross Sea continental margin since upper Miocene to LGM |
title_sort |
glacial, fluvioglacial and fluvial sedimentary discharge in the northwestern coastal sectorof the ross sea continental margin since upper miocene to lgm |
publisher |
Copernicus; European Geophysical Society |
publishDate |
2019 |
url |
http://hdl.handle.net/11567/980123 |
long_lat |
ENVELOPE(170.217,170.217,-72.317,-72.317) ENVELOPE(-61.000,-61.000,-64.717,-64.717) ENVELOPE(170.233,170.233,-71.283,-71.283) ENVELOPE(175.000,175.000,-71.000,-71.000) ENVELOPE(170.217,170.217,-72.317,-72.317) ENVELOPE(23.133,23.133,-72.117,-72.117) ENVELOPE(169.750,169.750,-73.467,-73.467) ENVELOPE(168.500,168.500,-73.000,-73.000) |
geographic |
Austral Ross Sea Victoria Land McMurdo Sound Hallett Drygalski Adare Cape Adare Cape Hallett Borchgrevink Coulman Island Borchgrevink Coast |
geographic_facet |
Austral Ross Sea Victoria Land McMurdo Sound Hallett Drygalski Adare Cape Adare Cape Hallett Borchgrevink Coulman Island Borchgrevink Coast |
genre |
Antarc* Antarctica Coulman Island McMurdo Sound Ross Sea Victoria Land |
genre_facet |
Antarc* Antarctica Coulman Island McMurdo Sound Ross Sea Victoria Land |
op_relation |
ispartofbook:Geophysical Research Abstracts Vol. 21, EGU2019 EGU General Assembly 2019 firstpage:9810-1 lastpage:9810-1 numberofpages:1 journal:GEOPHYSICAL RESEARCH ABSTRACTS http://hdl.handle.net/11567/980123 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1789326903179476992 |