Palaeontological characterisation and analysis of the AND-2A core, ANDRILL southern McMurdo sound project, Antarctica
The palaeontological yield of the 1138.54 metre-long AND-2A sedimentary rock core provides unique documentation of Neogene environments in the Ross Sea region of Antarctica. Especially important is the biological legacy of the climatically crucial 'mild' middle Miocene phase. Diatom-bearin...
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ftunivparmairis:oai:air.unipr.it:11381/2819991 2024-04-14T08:03:02+00:00 Palaeontological characterisation and analysis of the AND-2A core, ANDRILL southern McMurdo sound project, Antarctica Taviani, M Hannah, M Harwood, D. M Ishman, S. E Johnson, K Olney, M Riesselman, C Tuzzi, E Askin, R Beu, A. G Blair, S Cantarelli, V Ceregato, A Corrado, S Mohr, B Nielsen, S. H. H Petrushak, S Raine, J. I Warny, S. PERSICO, Davide Taviani, M Hannah, M Harwood, D. M Ishman, S. E Johnson, K Olney, M Riesselman, C Tuzzi, E Askin, R Beu, A. G Blair, S Cantarelli, V Ceregato, A Corrado, S Mohr, B Nielsen, S. H. H Persico, Davide Petrushak, S Raine, J. I Warny, S. 2008 http://hdl.handle.net/11381/2819991 eng eng volume:15 issue:1-2 firstpage:113 lastpage:146 numberofpages:34 journal:TERRA ANTARTICA http://hdl.handle.net/11381/2819991 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-71849096489 info:eu-repo/semantics/openAccess Agricultural and Biological Sciences (all) Earth and Planetary Sciences (all) info:eu-repo/semantics/article 2008 ftunivparmairis 2024-03-21T18:38:39Z The palaeontological yield of the 1138.54 metre-long AND-2A sedimentary rock core provides unique documentation of Neogene environments in the Ross Sea region of Antarctica. Especially important is the biological legacy of the climatically crucial 'mild' middle Miocene phase. Diatom-bearing units provide key information for stratigraphie intervals never previously recovered from locations proximal to the Antarctic continent and constrain the age model for the AND-2A core. Benthic calcareous (and agglutinated) foraminifera were present at many levels; remarkable is the occurrence of planktonic taxa only seldom found in the Neogene nearshore record of the Ross Sea region. The sporadic occurrence of calcareous dinoflagellate remains (thoracosphaerids) is consistent with warmer-than-present seawater during the Miocene. Marine palynomorphs are almost ubiquitous, although their abundance and diversity are variable. Pollen and spores from the middle Miocene section suggest a mossy tundra vegetation and represent the first stratigraphically-constrained record of terrestrial vegetation in Victoria Land during this time. Fragments of lignin-rich organic matter (huminite-vitrinite and inertinite groups) are particularly predominant during the Miocene climatic optimum, and continue into the Pliocene. Macrofossils are reasonably common throughout the core. Polychaete worm tubes were almost ubiquitous. Especially remarkable is the bivalve record (mainly pectinids), with 4-5 different taxa pointing out a mild climatic situation in the Miocene nearshore. Article in Journal/Newspaper Antarc* Antarctic Antarctica McMurdo Sound Ross Sea Tundra Victoria Land Archivio della ricerca dell'Università di Parma (CINECA IRIS) Antarctic McMurdo Sound Ross Sea The Antarctic Victoria Land |
institution |
Open Polar |
collection |
Archivio della ricerca dell'Università di Parma (CINECA IRIS) |
op_collection_id |
ftunivparmairis |
language |
English |
topic |
Agricultural and Biological Sciences (all) Earth and Planetary Sciences (all) |
spellingShingle |
Agricultural and Biological Sciences (all) Earth and Planetary Sciences (all) Taviani, M Hannah, M Harwood, D. M Ishman, S. E Johnson, K Olney, M Riesselman, C Tuzzi, E Askin, R Beu, A. G Blair, S Cantarelli, V Ceregato, A Corrado, S Mohr, B Nielsen, S. H. H Petrushak, S Raine, J. I Warny, S. PERSICO, Davide Palaeontological characterisation and analysis of the AND-2A core, ANDRILL southern McMurdo sound project, Antarctica |
topic_facet |
Agricultural and Biological Sciences (all) Earth and Planetary Sciences (all) |
description |
The palaeontological yield of the 1138.54 metre-long AND-2A sedimentary rock core provides unique documentation of Neogene environments in the Ross Sea region of Antarctica. Especially important is the biological legacy of the climatically crucial 'mild' middle Miocene phase. Diatom-bearing units provide key information for stratigraphie intervals never previously recovered from locations proximal to the Antarctic continent and constrain the age model for the AND-2A core. Benthic calcareous (and agglutinated) foraminifera were present at many levels; remarkable is the occurrence of planktonic taxa only seldom found in the Neogene nearshore record of the Ross Sea region. The sporadic occurrence of calcareous dinoflagellate remains (thoracosphaerids) is consistent with warmer-than-present seawater during the Miocene. Marine palynomorphs are almost ubiquitous, although their abundance and diversity are variable. Pollen and spores from the middle Miocene section suggest a mossy tundra vegetation and represent the first stratigraphically-constrained record of terrestrial vegetation in Victoria Land during this time. Fragments of lignin-rich organic matter (huminite-vitrinite and inertinite groups) are particularly predominant during the Miocene climatic optimum, and continue into the Pliocene. Macrofossils are reasonably common throughout the core. Polychaete worm tubes were almost ubiquitous. Especially remarkable is the bivalve record (mainly pectinids), with 4-5 different taxa pointing out a mild climatic situation in the Miocene nearshore. |
author2 |
Taviani, M Hannah, M Harwood, D. M Ishman, S. E Johnson, K Olney, M Riesselman, C Tuzzi, E Askin, R Beu, A. G Blair, S Cantarelli, V Ceregato, A Corrado, S Mohr, B Nielsen, S. H. H Persico, Davide Petrushak, S Raine, J. I Warny, S. |
format |
Article in Journal/Newspaper |
author |
Taviani, M Hannah, M Harwood, D. M Ishman, S. E Johnson, K Olney, M Riesselman, C Tuzzi, E Askin, R Beu, A. G Blair, S Cantarelli, V Ceregato, A Corrado, S Mohr, B Nielsen, S. H. H Petrushak, S Raine, J. I Warny, S. PERSICO, Davide |
author_facet |
Taviani, M Hannah, M Harwood, D. M Ishman, S. E Johnson, K Olney, M Riesselman, C Tuzzi, E Askin, R Beu, A. G Blair, S Cantarelli, V Ceregato, A Corrado, S Mohr, B Nielsen, S. H. H Petrushak, S Raine, J. I Warny, S. PERSICO, Davide |
author_sort |
Taviani, M |
title |
Palaeontological characterisation and analysis of the AND-2A core, ANDRILL southern McMurdo sound project, Antarctica |
title_short |
Palaeontological characterisation and analysis of the AND-2A core, ANDRILL southern McMurdo sound project, Antarctica |
title_full |
Palaeontological characterisation and analysis of the AND-2A core, ANDRILL southern McMurdo sound project, Antarctica |
title_fullStr |
Palaeontological characterisation and analysis of the AND-2A core, ANDRILL southern McMurdo sound project, Antarctica |
title_full_unstemmed |
Palaeontological characterisation and analysis of the AND-2A core, ANDRILL southern McMurdo sound project, Antarctica |
title_sort |
palaeontological characterisation and analysis of the and-2a core, andrill southern mcmurdo sound project, antarctica |
publishDate |
2008 |
url |
http://hdl.handle.net/11381/2819991 |
geographic |
Antarctic McMurdo Sound Ross Sea The Antarctic Victoria Land |
geographic_facet |
Antarctic McMurdo Sound Ross Sea The Antarctic Victoria Land |
genre |
Antarc* Antarctic Antarctica McMurdo Sound Ross Sea Tundra Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Sound Ross Sea Tundra Victoria Land |
op_relation |
volume:15 issue:1-2 firstpage:113 lastpage:146 numberofpages:34 journal:TERRA ANTARTICA http://hdl.handle.net/11381/2819991 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-71849096489 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1796297840245342208 |