Central Mediterranean Mid-Pleistocene paleoclimatic variability and its association with global climate
Planktonic foraminiferal assemblages were studied at high-resolution in core KC01B from the Ionian Sea. Quantitative analysis allowed us to distinguish the main climatic features and associated paleoceanographic changes, that occurred between Marine Isotopic Stages (MIS) 13 and 9 (~500-300 ka). MIS...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/329859 2024-04-28T08:28:35+00:00 Central Mediterranean Mid-Pleistocene paleoclimatic variability and its association with global climate Capotondi, Lucilla Girone, Angela Lirer, Fabrizio Bergami, Caterina Verducci, Marina Vallefuoco, Mattia Afferri, Angelica Ferraro, Luciana Pelosi, Nicola De Lange, Gert J. Geochemistry General geochemistry 2016-01-15 application/pdf https://dspace.library.uu.nl/handle/1874/329859 en eng 0031-0182 https://dspace.library.uu.nl/handle/1874/329859 info:eu-repo/semantics/OpenAccess Central Mediterranean Middle Pleistocene Paleoceanographic changes Planktonic foraminifera Taverne Ecology Evolution Behavior and Systematics Palaeontology Earth-Surface Processes Oceanography Article 2016 ftunivutrecht 2024-04-03T14:03:13Z Planktonic foraminiferal assemblages were studied at high-resolution in core KC01B from the Ionian Sea. Quantitative analysis allowed us to distinguish the main climatic features and associated paleoceanographic changes, that occurred between Marine Isotopic Stages (MIS) 13 and 9 (~500-300 ka). MIS 12 and MIS 10 are characterized by relatively temperate conditions and an oligotrophic oceanographic regime in the early part and by colder conditions and nutrient supply in the sub-surface water masses in the upper part. During these intervals, small but distinct peaks of Neogloboquadrina pachyderma sinistral (sin) are detected at times of extremely negative values of the planktonic foraminifera paleoclimatic curve. Their co-occurrence with similar episodes in the Atlantic suggests that the climate in the Central Mediterranean was associated with north-Atlantic millennial-scale climate instability. MIS 11 and MIS 9 are dominated by surficial warm-water taxa. The climate optimum is reached in the middle part of each of these stages, as denoted by the presence of Globigerinoides sacculifer, and persists for approximately 20 and 6ka during MIS 11 and MIS 9 respectively. This warming is not constant but is characterized by three distinct intervals with elevated winter temperatures and/or weak winter mixing. Distribution of Globigerina bulloides, Turborotalita quinqueloba and N. pachyderma dextral (dex) indicates that significant environmental changes occur across the transitions from glacial to interglacial MIS 12/MIS 11 (Termination V) and MIS 10/MIS 9 (Termination IV). The studied record documents a close linkage between Mediterranean climate evolution and higher- and lower-latitude climate change throughout MIS 13-9. Article in Journal/Newspaper Neogloboquadrina pachyderma North Atlantic Planktonic foraminifera Utrecht University Repository |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
topic |
Central Mediterranean Middle Pleistocene Paleoceanographic changes Planktonic foraminifera Taverne Ecology Evolution Behavior and Systematics Palaeontology Earth-Surface Processes Oceanography |
spellingShingle |
Central Mediterranean Middle Pleistocene Paleoceanographic changes Planktonic foraminifera Taverne Ecology Evolution Behavior and Systematics Palaeontology Earth-Surface Processes Oceanography Capotondi, Lucilla Girone, Angela Lirer, Fabrizio Bergami, Caterina Verducci, Marina Vallefuoco, Mattia Afferri, Angelica Ferraro, Luciana Pelosi, Nicola De Lange, Gert J. Central Mediterranean Mid-Pleistocene paleoclimatic variability and its association with global climate |
topic_facet |
Central Mediterranean Middle Pleistocene Paleoceanographic changes Planktonic foraminifera Taverne Ecology Evolution Behavior and Systematics Palaeontology Earth-Surface Processes Oceanography |
description |
Planktonic foraminiferal assemblages were studied at high-resolution in core KC01B from the Ionian Sea. Quantitative analysis allowed us to distinguish the main climatic features and associated paleoceanographic changes, that occurred between Marine Isotopic Stages (MIS) 13 and 9 (~500-300 ka). MIS 12 and MIS 10 are characterized by relatively temperate conditions and an oligotrophic oceanographic regime in the early part and by colder conditions and nutrient supply in the sub-surface water masses in the upper part. During these intervals, small but distinct peaks of Neogloboquadrina pachyderma sinistral (sin) are detected at times of extremely negative values of the planktonic foraminifera paleoclimatic curve. Their co-occurrence with similar episodes in the Atlantic suggests that the climate in the Central Mediterranean was associated with north-Atlantic millennial-scale climate instability. MIS 11 and MIS 9 are dominated by surficial warm-water taxa. The climate optimum is reached in the middle part of each of these stages, as denoted by the presence of Globigerinoides sacculifer, and persists for approximately 20 and 6ka during MIS 11 and MIS 9 respectively. This warming is not constant but is characterized by three distinct intervals with elevated winter temperatures and/or weak winter mixing. Distribution of Globigerina bulloides, Turborotalita quinqueloba and N. pachyderma dextral (dex) indicates that significant environmental changes occur across the transitions from glacial to interglacial MIS 12/MIS 11 (Termination V) and MIS 10/MIS 9 (Termination IV). The studied record documents a close linkage between Mediterranean climate evolution and higher- and lower-latitude climate change throughout MIS 13-9. |
author2 |
Geochemistry General geochemistry |
format |
Article in Journal/Newspaper |
author |
Capotondi, Lucilla Girone, Angela Lirer, Fabrizio Bergami, Caterina Verducci, Marina Vallefuoco, Mattia Afferri, Angelica Ferraro, Luciana Pelosi, Nicola De Lange, Gert J. |
author_facet |
Capotondi, Lucilla Girone, Angela Lirer, Fabrizio Bergami, Caterina Verducci, Marina Vallefuoco, Mattia Afferri, Angelica Ferraro, Luciana Pelosi, Nicola De Lange, Gert J. |
author_sort |
Capotondi, Lucilla |
title |
Central Mediterranean Mid-Pleistocene paleoclimatic variability and its association with global climate |
title_short |
Central Mediterranean Mid-Pleistocene paleoclimatic variability and its association with global climate |
title_full |
Central Mediterranean Mid-Pleistocene paleoclimatic variability and its association with global climate |
title_fullStr |
Central Mediterranean Mid-Pleistocene paleoclimatic variability and its association with global climate |
title_full_unstemmed |
Central Mediterranean Mid-Pleistocene paleoclimatic variability and its association with global climate |
title_sort |
central mediterranean mid-pleistocene paleoclimatic variability and its association with global climate |
publishDate |
2016 |
url |
https://dspace.library.uu.nl/handle/1874/329859 |
genre |
Neogloboquadrina pachyderma North Atlantic Planktonic foraminifera |
genre_facet |
Neogloboquadrina pachyderma North Atlantic Planktonic foraminifera |
op_relation |
0031-0182 https://dspace.library.uu.nl/handle/1874/329859 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1797587066519814144 |