Extreme depositional events on the NW-Barents Sea continental margin
The post Last Glacial Maximum depositional history of the Storfjorden and Kveithola trough-mouth fans in the North-western Barents Sea has been investigated within two coordinated Spanish and Italian projects in the framework of the International Polar Year (IPY) Activity 367, NICE STREAMS Sediment...
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B. Cesare, E. Erba, B. Carmina, L. Fascio, F.M. Petti, A. Zuccari.
2014
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Online Access: | http://hdl.handle.net/11568/574667 https://doi.org/10.3301/ROL.2014.140 |
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ftunivpisairis:oai:arpi.unipi.it:11568/574667 2024-04-14T08:09:37+00:00 Extreme depositional events on the NW-Barents Sea continental margin Lucchi R. G. Colmenero Hidalgo E. Sierro F. J. Sagnotti L. Barcena M. A. Melis R. Villa G. Urgeles R. Camerlenghi A. Rebesco M. MORIGI, CATERINA B. Cesare, E. Erba, B. Carmina, L. Fascio, F.M. Petti, A. Zuccari. Lucchi, R. G. Colmenero Hidalgo, E. Sierro, F. J. Sagnotti, L. Barcena, M. A. Melis, R. Morigi, Caterina Villa, G. Urgeles, R. Camerlenghi, A. Rebesco, M. 2014 ELETTRONICO http://hdl.handle.net/11568/574667 https://doi.org/10.3301/ROL.2014.140 eng eng B. Cesare, E. Erba, B. Carmina, L. Fascio, F.M. Petti, A. Zuccari. country:ITA ispartofbook:The Future of the Italian Geosciences 87° Congresso della Società Geologica Italiana e 90° Congresso della Società Italiana di Mineralogia e Petrologia volume:31 issue:1 firstpage:71 lastpage:71 numberofpages:1 journal:RENDICONTI ONLINE DELLA SOCIETÀ GEOLOGICA ITALIANA alleditors:B. Cesare, E. Erba, B. Carmina, L. Fascio, F.M. Petti, A. Zuccari. http://hdl.handle.net/11568/574667 doi:10.3301/ROL.2014.140 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84984685494 info:eu-repo/semantics/conferenceObject 2014 ftunivpisairis https://doi.org/10.3301/ROL.2014.140 2024-03-21T18:45:48Z The post Last Glacial Maximum depositional history of the Storfjorden and Kveithola trough-mouth fans in the North-western Barents Sea has been investigated within two coordinated Spanish and Italian projects in the framework of the International Polar Year (IPY) Activity 367, NICE STREAMS Sediment facies analysis allowed the distinction of a number of depositional processes whose onset appears closely related to ice stream’s dynamics, oceanographic patterns, and sea-level changes in response to climate change. Highly consolidated glacigenic diamicton, deposited during glacial maxima on the upper slope, indicating ice streams grounded at the shelf edge. Massive release of IRD was associated to increased calving rates with possible outer ice streams lift off and collapse at the inception of deglaciation. The presence of a several meter-thick sequence of interlaminated sediments deposited by subglacial outbursts of turbid meltwater (plumites) indicates rapid ice streams' melting and retreat. Crudely-layered and heavily-bioturbated sediments deposited in the later stages of deglaciation by contour currents under climatic/environmental conditions favourable to bioproductivity. The extreme sedimentation rate of 3.4 cm a−1 calculated for the plumites from the upper-slope area indicates a massive, nearly instantaneous (less than 150 years), terrigenous input corresponding to an outstanding meltwater event. We indicate these interlaminated sediments to represent the high-latitude marine record of Meltwater Pulse 1a (MWP- 1a). Conference Object Barents Sea International Polar Year IPY ARPI - Archivio della Ricerca dell'Università di Pisa Barents Sea Rendiconti Online della Società Geologica Italiana 31 |
institution |
Open Polar |
collection |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
description |
The post Last Glacial Maximum depositional history of the Storfjorden and Kveithola trough-mouth fans in the North-western Barents Sea has been investigated within two coordinated Spanish and Italian projects in the framework of the International Polar Year (IPY) Activity 367, NICE STREAMS Sediment facies analysis allowed the distinction of a number of depositional processes whose onset appears closely related to ice stream’s dynamics, oceanographic patterns, and sea-level changes in response to climate change. Highly consolidated glacigenic diamicton, deposited during glacial maxima on the upper slope, indicating ice streams grounded at the shelf edge. Massive release of IRD was associated to increased calving rates with possible outer ice streams lift off and collapse at the inception of deglaciation. The presence of a several meter-thick sequence of interlaminated sediments deposited by subglacial outbursts of turbid meltwater (plumites) indicates rapid ice streams' melting and retreat. Crudely-layered and heavily-bioturbated sediments deposited in the later stages of deglaciation by contour currents under climatic/environmental conditions favourable to bioproductivity. The extreme sedimentation rate of 3.4 cm a−1 calculated for the plumites from the upper-slope area indicates a massive, nearly instantaneous (less than 150 years), terrigenous input corresponding to an outstanding meltwater event. We indicate these interlaminated sediments to represent the high-latitude marine record of Meltwater Pulse 1a (MWP- 1a). |
author2 |
B. Cesare, E. Erba, B. Carmina, L. Fascio, F.M. Petti, A. Zuccari. Lucchi, R. G. Colmenero Hidalgo, E. Sierro, F. J. Sagnotti, L. Barcena, M. A. Melis, R. Morigi, Caterina Villa, G. Urgeles, R. Camerlenghi, A. Rebesco, M. |
format |
Conference Object |
author |
Lucchi R. G. Colmenero Hidalgo E. Sierro F. J. Sagnotti L. Barcena M. A. Melis R. Villa G. Urgeles R. Camerlenghi A. Rebesco M. MORIGI, CATERINA |
spellingShingle |
Lucchi R. G. Colmenero Hidalgo E. Sierro F. J. Sagnotti L. Barcena M. A. Melis R. Villa G. Urgeles R. Camerlenghi A. Rebesco M. MORIGI, CATERINA Extreme depositional events on the NW-Barents Sea continental margin |
author_facet |
Lucchi R. G. Colmenero Hidalgo E. Sierro F. J. Sagnotti L. Barcena M. A. Melis R. Villa G. Urgeles R. Camerlenghi A. Rebesco M. MORIGI, CATERINA |
author_sort |
Lucchi R. G. |
title |
Extreme depositional events on the NW-Barents Sea continental margin |
title_short |
Extreme depositional events on the NW-Barents Sea continental margin |
title_full |
Extreme depositional events on the NW-Barents Sea continental margin |
title_fullStr |
Extreme depositional events on the NW-Barents Sea continental margin |
title_full_unstemmed |
Extreme depositional events on the NW-Barents Sea continental margin |
title_sort |
extreme depositional events on the nw-barents sea continental margin |
publisher |
B. Cesare, E. Erba, B. Carmina, L. Fascio, F.M. Petti, A. Zuccari. |
publishDate |
2014 |
url |
http://hdl.handle.net/11568/574667 https://doi.org/10.3301/ROL.2014.140 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea International Polar Year IPY |
genre_facet |
Barents Sea International Polar Year IPY |
op_relation |
ispartofbook:The Future of the Italian Geosciences 87° Congresso della Società Geologica Italiana e 90° Congresso della Società Italiana di Mineralogia e Petrologia volume:31 issue:1 firstpage:71 lastpage:71 numberofpages:1 journal:RENDICONTI ONLINE DELLA SOCIETÀ GEOLOGICA ITALIANA alleditors:B. Cesare, E. Erba, B. Carmina, L. Fascio, F.M. Petti, A. Zuccari. http://hdl.handle.net/11568/574667 doi:10.3301/ROL.2014.140 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84984685494 |
op_doi |
https://doi.org/10.3301/ROL.2014.140 |
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Rendiconti Online della Società Geologica Italiana |
container_volume |
31 |
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