Middle Miocene stepwise climate evolution in the Mediterranean region through high‐resolution stable isotopes and calcareous plankton records
The middle Miocene is marked by a changeover from a warm climatic period (Miocene Climatic Optimum, ~17- 14.7 Ma), to a transitional phase (Middle Miocene Climatic Transition), culminating in a cold stage (Icehouse Mode, ~13.8 Ma). This period is associated with a positive excursion of δ13C (“Monter...
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Online Access: | http://hdl.handle.net/11573/1611899 https://doi.org/10.1016/j.marmicro.2021.102030 |
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ftunivromairis:oai:iris.uniroma1.it:11573/1611899 2024-04-21T08:10:36+00:00 Middle Miocene stepwise climate evolution in the Mediterranean region through high‐resolution stable isotopes and calcareous plankton records Baldassini N Foresi L M Lirer F Sprovieri M Turco E Pelosi N Di Stefano A Baldassini, N Foresi, L M Lirer, F Sprovieri, M Turco, E Pelosi, N Di Stefano, A 2021 http://hdl.handle.net/11573/1611899 https://doi.org/10.1016/j.marmicro.2021.102030 eng eng Elsevier place:Amsterdam info:eu-repo/semantics/altIdentifier/wos/WOS:000687638100006 volume:167 numberofpages:21 journal:MARINE MICROPALEONTOLOGY http://hdl.handle.net/11573/1611899 doi:10.1016/j.marmicro.2021.102030 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85111323866 info:eu-repo/semantics/closedAccess DSDP Site 372 Neogene calcareous nannofossil planktonic foraminifera oxygen and carbon isotope surface-water conditions info:eu-repo/semantics/article 2021 ftunivromairis https://doi.org/10.1016/j.marmicro.2021.102030 2024-03-28T02:12:02Z The middle Miocene is marked by a changeover from a warm climatic period (Miocene Climatic Optimum, ~17- 14.7 Ma), to a transitional phase (Middle Miocene Climatic Transition), culminating in a cold stage (Icehouse Mode, ~13.8 Ma). This period is associated with a positive excursion of δ13C (“Monterey Excursion”), showing a series of δ13C maxima (CM events) highlighted by cooling peaks in the δ18O values (Mi events). DSDP Site 372 obtained a high-resolution record of the middle Miocene of the western Mediterranean (Balearic Islands), and represents one of the best marine sedimentary records for the considered time interval. In this study, highresolution stable isotope and quantitative calcareous plankton records for the Langhian to the early Serravallian time interval are presented. The stable oxygen and carbon isotope records allowed us to recognize and chronologically frame the Mi and CM events falling between 15.82 and 13.04 Ma. Furthermore, by integrating the stable isotope data with those obtained by the quantitative analyses of the calcareous plankton content, the three-folded climatic and environmental evolution was outlined for the considered time interval in the Mediterranean region. During the first stage (Miocene Climatic Optimum = MCO; from 17 up to 14.55 Ma), an initial warm-surfacewater, oligotrophic, high salinity and restricted environment is followed by an open marine setting (starting from 15.18 Ma) within still warm-surface-water and oligotrophic conditions. The re-opening of the connections between the Mediterranean Sea and the Indian Ocean would have likely triggered this latter environmental change. From 14.55 to 13.75 Ma (second stage; Middle Miocene Climatic Transition; MMCT) an initial (up to 14.05 Ma) temperate-warm-surface-water and eutrophic environment occurred, followed by the onset of warm-surfacewater, oligotrophic and slightly restricted marine conditions. The third stage (Icehouse Mode = IHM; from 13.75 Ma onwards) points to the development of a cold-water, eutrophic, high ... Article in Journal/Newspaper Planktonic foraminifera Sapienza Università di Roma: CINECA IRIS Marine Micropaleontology 167 102030 |
institution |
Open Polar |
collection |
Sapienza Università di Roma: CINECA IRIS |
op_collection_id |
ftunivromairis |
language |
English |
topic |
DSDP Site 372 Neogene calcareous nannofossil planktonic foraminifera oxygen and carbon isotope surface-water conditions |
spellingShingle |
DSDP Site 372 Neogene calcareous nannofossil planktonic foraminifera oxygen and carbon isotope surface-water conditions Baldassini N Foresi L M Lirer F Sprovieri M Turco E Pelosi N Di Stefano A Middle Miocene stepwise climate evolution in the Mediterranean region through high‐resolution stable isotopes and calcareous plankton records |
topic_facet |
DSDP Site 372 Neogene calcareous nannofossil planktonic foraminifera oxygen and carbon isotope surface-water conditions |
description |
The middle Miocene is marked by a changeover from a warm climatic period (Miocene Climatic Optimum, ~17- 14.7 Ma), to a transitional phase (Middle Miocene Climatic Transition), culminating in a cold stage (Icehouse Mode, ~13.8 Ma). This period is associated with a positive excursion of δ13C (“Monterey Excursion”), showing a series of δ13C maxima (CM events) highlighted by cooling peaks in the δ18O values (Mi events). DSDP Site 372 obtained a high-resolution record of the middle Miocene of the western Mediterranean (Balearic Islands), and represents one of the best marine sedimentary records for the considered time interval. In this study, highresolution stable isotope and quantitative calcareous plankton records for the Langhian to the early Serravallian time interval are presented. The stable oxygen and carbon isotope records allowed us to recognize and chronologically frame the Mi and CM events falling between 15.82 and 13.04 Ma. Furthermore, by integrating the stable isotope data with those obtained by the quantitative analyses of the calcareous plankton content, the three-folded climatic and environmental evolution was outlined for the considered time interval in the Mediterranean region. During the first stage (Miocene Climatic Optimum = MCO; from 17 up to 14.55 Ma), an initial warm-surfacewater, oligotrophic, high salinity and restricted environment is followed by an open marine setting (starting from 15.18 Ma) within still warm-surface-water and oligotrophic conditions. The re-opening of the connections between the Mediterranean Sea and the Indian Ocean would have likely triggered this latter environmental change. From 14.55 to 13.75 Ma (second stage; Middle Miocene Climatic Transition; MMCT) an initial (up to 14.05 Ma) temperate-warm-surface-water and eutrophic environment occurred, followed by the onset of warm-surfacewater, oligotrophic and slightly restricted marine conditions. The third stage (Icehouse Mode = IHM; from 13.75 Ma onwards) points to the development of a cold-water, eutrophic, high ... |
author2 |
Baldassini, N Foresi, L M Lirer, F Sprovieri, M Turco, E Pelosi, N Di Stefano, A |
format |
Article in Journal/Newspaper |
author |
Baldassini N Foresi L M Lirer F Sprovieri M Turco E Pelosi N Di Stefano A |
author_facet |
Baldassini N Foresi L M Lirer F Sprovieri M Turco E Pelosi N Di Stefano A |
author_sort |
Baldassini N |
title |
Middle Miocene stepwise climate evolution in the Mediterranean region through high‐resolution stable isotopes and calcareous plankton records |
title_short |
Middle Miocene stepwise climate evolution in the Mediterranean region through high‐resolution stable isotopes and calcareous plankton records |
title_full |
Middle Miocene stepwise climate evolution in the Mediterranean region through high‐resolution stable isotopes and calcareous plankton records |
title_fullStr |
Middle Miocene stepwise climate evolution in the Mediterranean region through high‐resolution stable isotopes and calcareous plankton records |
title_full_unstemmed |
Middle Miocene stepwise climate evolution in the Mediterranean region through high‐resolution stable isotopes and calcareous plankton records |
title_sort |
middle miocene stepwise climate evolution in the mediterranean region through high‐resolution stable isotopes and calcareous plankton records |
publisher |
Elsevier |
publishDate |
2021 |
url |
http://hdl.handle.net/11573/1611899 https://doi.org/10.1016/j.marmicro.2021.102030 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000687638100006 volume:167 numberofpages:21 journal:MARINE MICROPALEONTOLOGY http://hdl.handle.net/11573/1611899 doi:10.1016/j.marmicro.2021.102030 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85111323866 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.marmicro.2021.102030 |
container_title |
Marine Micropaleontology |
container_volume |
167 |
container_start_page |
102030 |
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1796952100817600512 |