The Climatic Significance of Laminated Sediments on the NW Barents Sea (Arctic)
The recent depositional architecture of the north-western Barents Sea continental margin derives from past climate changes with alternating deposition of highly consolidated glacigenic diamicton (continental shelf) and debris flows (continental slope) associated to shelf-edge glaciations, and low-de...
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ftunivpisairis:oai:arpi.unipi.it:11568/947708 2024-04-14T08:08:08+00:00 The Climatic Significance of Laminated Sediments on the NW Barents Sea (Arctic) Renata Giulia Lucchi Jan Sverre Laberg Caterina Morigi Katrine Husum Maria Elena Musco Mauro Caffau Chiara Caricchi Leonardo Sagnotti Patrizia Macrì Michele Rebesco Francesco Princivalle Giovanna Giorgetti Giulia Lucchi, Renata Sverre Laberg, Jan Morigi, Caterina Husum, Katrine Elena Musco, Maria Caffau, Mauro Caricchi, Chiara Sagnotti, Leonardo Macrì, Patrizia Rebesco, Michele Princivalle, Francesco Giorgetti, Giovanna 2018 ELETTRONICO http://hdl.handle.net/11568/947708 eng eng country:CHE place:Davos, Svizzera info:eu-repo/semantics/altIdentifier/isbn/978-0-948277-54-2 ispartofbook:POLAR2018. Where the Poles come together. Abstract Proceedings Open Science Conference POLAR2018-Where the Poles come together firstpage:469 lastpage:469 numberofpages:1 http://hdl.handle.net/11568/947708 info:eu-repo/semantics/conferenceObject 2018 ftunivpisairis 2024-03-21T19:07:21Z The recent depositional architecture of the north-western Barents Sea continental margin derives from past climate changes with alternating deposition of highly consolidated glacigenic diamicton (continental shelf) and debris flows (continental slope) associated to shelf-edge glaciations, and low-density, normally consolidated biogenic-rich sediments deposited during interglacial conditions. In addition, sub-bottom records outline the presence of acoustically laminated deposits locally having thickness of more than 10 m, which lithofacies characteristics indicate deposition from turbid meltwaters (plumites) during short-living, phases of glacial retreat (meltwater pulses, MWP). One of the youngest stratigraphic intervals recognized along the NW Barents Sea margin was related to the MWP-1a that was responsible for the deposition of about 1.1 x 1011 tonnes of sediments on the upper slope of the Storfjorden-Kveithola TMFs (south of Svalbard) (Lucchi et al., 2015). New compositional analyses of such plumites revealed a distinct signature that allow us to distinguish deposition from glacial melting form that related to the ice-sheet sub-glacial erosion and transport to the edge of margins. Sediment facies and compositional analyses lead to a new climate-related interpretation of the laminated deposits recognized during Marine Isotopic Stages 3 and 2 on the NW margin of the Barents Sea, including Heinrich Event H2. Conference Object Arctic Barents Sea Ice Sheet Storfjorden Svalbard ARPI - Archivio della Ricerca dell'Università di Pisa Arctic Barents Sea Svalbard |
institution |
Open Polar |
collection |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
description |
The recent depositional architecture of the north-western Barents Sea continental margin derives from past climate changes with alternating deposition of highly consolidated glacigenic diamicton (continental shelf) and debris flows (continental slope) associated to shelf-edge glaciations, and low-density, normally consolidated biogenic-rich sediments deposited during interglacial conditions. In addition, sub-bottom records outline the presence of acoustically laminated deposits locally having thickness of more than 10 m, which lithofacies characteristics indicate deposition from turbid meltwaters (plumites) during short-living, phases of glacial retreat (meltwater pulses, MWP). One of the youngest stratigraphic intervals recognized along the NW Barents Sea margin was related to the MWP-1a that was responsible for the deposition of about 1.1 x 1011 tonnes of sediments on the upper slope of the Storfjorden-Kveithola TMFs (south of Svalbard) (Lucchi et al., 2015). New compositional analyses of such plumites revealed a distinct signature that allow us to distinguish deposition from glacial melting form that related to the ice-sheet sub-glacial erosion and transport to the edge of margins. Sediment facies and compositional analyses lead to a new climate-related interpretation of the laminated deposits recognized during Marine Isotopic Stages 3 and 2 on the NW margin of the Barents Sea, including Heinrich Event H2. |
author2 |
Giulia Lucchi, Renata Sverre Laberg, Jan Morigi, Caterina Husum, Katrine Elena Musco, Maria Caffau, Mauro Caricchi, Chiara Sagnotti, Leonardo Macrì, Patrizia Rebesco, Michele Princivalle, Francesco Giorgetti, Giovanna |
format |
Conference Object |
author |
Renata Giulia Lucchi Jan Sverre Laberg Caterina Morigi Katrine Husum Maria Elena Musco Mauro Caffau Chiara Caricchi Leonardo Sagnotti Patrizia Macrì Michele Rebesco Francesco Princivalle Giovanna Giorgetti |
spellingShingle |
Renata Giulia Lucchi Jan Sverre Laberg Caterina Morigi Katrine Husum Maria Elena Musco Mauro Caffau Chiara Caricchi Leonardo Sagnotti Patrizia Macrì Michele Rebesco Francesco Princivalle Giovanna Giorgetti The Climatic Significance of Laminated Sediments on the NW Barents Sea (Arctic) |
author_facet |
Renata Giulia Lucchi Jan Sverre Laberg Caterina Morigi Katrine Husum Maria Elena Musco Mauro Caffau Chiara Caricchi Leonardo Sagnotti Patrizia Macrì Michele Rebesco Francesco Princivalle Giovanna Giorgetti |
author_sort |
Renata Giulia Lucchi |
title |
The Climatic Significance of Laminated Sediments on the NW Barents Sea (Arctic) |
title_short |
The Climatic Significance of Laminated Sediments on the NW Barents Sea (Arctic) |
title_full |
The Climatic Significance of Laminated Sediments on the NW Barents Sea (Arctic) |
title_fullStr |
The Climatic Significance of Laminated Sediments on the NW Barents Sea (Arctic) |
title_full_unstemmed |
The Climatic Significance of Laminated Sediments on the NW Barents Sea (Arctic) |
title_sort |
climatic significance of laminated sediments on the nw barents sea (arctic) |
publisher |
country:CHE |
publishDate |
2018 |
url |
http://hdl.handle.net/11568/947708 |
geographic |
Arctic Barents Sea Svalbard |
geographic_facet |
Arctic Barents Sea Svalbard |
genre |
Arctic Barents Sea Ice Sheet Storfjorden Svalbard |
genre_facet |
Arctic Barents Sea Ice Sheet Storfjorden Svalbard |
op_relation |
info:eu-repo/semantics/altIdentifier/isbn/978-0-948277-54-2 ispartofbook:POLAR2018. Where the Poles come together. Abstract Proceedings Open Science Conference POLAR2018-Where the Poles come together firstpage:469 lastpage:469 numberofpages:1 http://hdl.handle.net/11568/947708 |
_version_ |
1796305558593077248 |