Astronomical tuning of the La Vedova High Cliff section (Ancona, Italy)—Implications of the Middle Miocene Climate Transition for Mediterranean sapropel formation.
Continuous marine successions covering the Middle Miocene Climate Transition (MMCT; ∼15–13.7 Ma) are scarce and the lack of a high-resolution magnetobiostratigraphic framework hampers the construction of astronomically tuned age models for this time interval. The La Vedova High Cliff section, expose...
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Online Access: | http://hdl.handle.net/11381/2316623 https://doi.org/10.1016/j.epsl.2010.06.026 |
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ftunivparmairis:oai:air.unipr.it:11381/2316623 2024-04-14T08:02:43+00:00 Astronomical tuning of the La Vedova High Cliff section (Ancona, Italy)—Implications of the Middle Miocene Climate Transition for Mediterranean sapropel formation. A. A. Mourik J. F. Bijkerk A. Cascella S. K. Hüsing F. J. Hilgen L. J. Lourens TURCO, Elena A. A., Mourik J. F., Bijkerk A., Cascella S. K., Hüsing F. J., Hilgen L. J., Louren Turco, Elena 2010 http://hdl.handle.net/11381/2316623 https://doi.org/10.1016/j.epsl.2010.06.026 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000282110100025 volume:297 firstpage:249 lastpage:261 numberofpages:13 journal:EARTH AND PLANETARY SCIENCE LETTERS http://hdl.handle.net/11381/2316623 doi:10.1016/j.epsl.2010.06.026 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77956057886 info:eu-repo/semantics/closedAccess info:eu-repo/semantics/article 2010 ftunivparmairis https://doi.org/10.1016/j.epsl.2010.06.026 2024-03-21T03:24:26Z Continuous marine successions covering the Middle Miocene Climate Transition (MMCT; ∼15–13.7 Ma) are scarce and the lack of a high-resolution magnetobiostratigraphic framework hampers the construction of astronomically tuned age models for this time interval. The La Vedova High Cliff section, exposed along the coast of the Cònero Riviera near Ancona (Italy), is one of the few Mediterranean sections covering the critical time interval of the MMCT. Starting from an initial magnetobiostratigraphic age model, a robust astronomical tuning was constructed for the interval between 14.2 and 13.5 Ma, using geochemical element data and time series analysis. A shift in δ18O of bulk sediment towards heavier values occurs between ∼13.92 and 13.78 Ma and could be related to the Mi3b oxygen isotope event, which reflects the rapid expansion of the East Antarctic Ice Sheet in the middle Miocene. The onset of the CM6 carbon excursion is reflected in the bulk record by a rapid increase in δ13C at 13.86 Ma. Our results confirm the proposition that these events coincide with a 405-kyr minimum in eccentricity and a node in obliquity related to the ∼1.2 Myr cycle. From 13.8 Ma onwards, distinct quadruplet cycles containing sapropelitic sediments were deposited. This may suggest a causal connection between the main middle Miocene cooling step and the onset of sapropel formation in the Mediterranean. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Archivio della ricerca dell'Università di Parma (CINECA IRIS) Antarctic East Antarctic Ice Sheet High Cliff ENVELOPE(166.450,166.450,-77.617,-77.617) Earth and Planetary Science Letters 297 1-2 249 261 |
institution |
Open Polar |
collection |
Archivio della ricerca dell'Università di Parma (CINECA IRIS) |
op_collection_id |
ftunivparmairis |
language |
English |
description |
Continuous marine successions covering the Middle Miocene Climate Transition (MMCT; ∼15–13.7 Ma) are scarce and the lack of a high-resolution magnetobiostratigraphic framework hampers the construction of astronomically tuned age models for this time interval. The La Vedova High Cliff section, exposed along the coast of the Cònero Riviera near Ancona (Italy), is one of the few Mediterranean sections covering the critical time interval of the MMCT. Starting from an initial magnetobiostratigraphic age model, a robust astronomical tuning was constructed for the interval between 14.2 and 13.5 Ma, using geochemical element data and time series analysis. A shift in δ18O of bulk sediment towards heavier values occurs between ∼13.92 and 13.78 Ma and could be related to the Mi3b oxygen isotope event, which reflects the rapid expansion of the East Antarctic Ice Sheet in the middle Miocene. The onset of the CM6 carbon excursion is reflected in the bulk record by a rapid increase in δ13C at 13.86 Ma. Our results confirm the proposition that these events coincide with a 405-kyr minimum in eccentricity and a node in obliquity related to the ∼1.2 Myr cycle. From 13.8 Ma onwards, distinct quadruplet cycles containing sapropelitic sediments were deposited. This may suggest a causal connection between the main middle Miocene cooling step and the onset of sapropel formation in the Mediterranean. |
author2 |
A. A., Mourik J. F., Bijkerk A., Cascella S. K., Hüsing F. J., Hilgen L. J., Louren Turco, Elena |
format |
Article in Journal/Newspaper |
author |
A. A. Mourik J. F. Bijkerk A. Cascella S. K. Hüsing F. J. Hilgen L. J. Lourens TURCO, Elena |
spellingShingle |
A. A. Mourik J. F. Bijkerk A. Cascella S. K. Hüsing F. J. Hilgen L. J. Lourens TURCO, Elena Astronomical tuning of the La Vedova High Cliff section (Ancona, Italy)—Implications of the Middle Miocene Climate Transition for Mediterranean sapropel formation. |
author_facet |
A. A. Mourik J. F. Bijkerk A. Cascella S. K. Hüsing F. J. Hilgen L. J. Lourens TURCO, Elena |
author_sort |
A. A. Mourik |
title |
Astronomical tuning of the La Vedova High Cliff section (Ancona, Italy)—Implications of the Middle Miocene Climate Transition for Mediterranean sapropel formation. |
title_short |
Astronomical tuning of the La Vedova High Cliff section (Ancona, Italy)—Implications of the Middle Miocene Climate Transition for Mediterranean sapropel formation. |
title_full |
Astronomical tuning of the La Vedova High Cliff section (Ancona, Italy)—Implications of the Middle Miocene Climate Transition for Mediterranean sapropel formation. |
title_fullStr |
Astronomical tuning of the La Vedova High Cliff section (Ancona, Italy)—Implications of the Middle Miocene Climate Transition for Mediterranean sapropel formation. |
title_full_unstemmed |
Astronomical tuning of the La Vedova High Cliff section (Ancona, Italy)—Implications of the Middle Miocene Climate Transition for Mediterranean sapropel formation. |
title_sort |
astronomical tuning of the la vedova high cliff section (ancona, italy)—implications of the middle miocene climate transition for mediterranean sapropel formation. |
publishDate |
2010 |
url |
http://hdl.handle.net/11381/2316623 https://doi.org/10.1016/j.epsl.2010.06.026 |
long_lat |
ENVELOPE(166.450,166.450,-77.617,-77.617) |
geographic |
Antarctic East Antarctic Ice Sheet High Cliff |
geographic_facet |
Antarctic East Antarctic Ice Sheet High Cliff |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000282110100025 volume:297 firstpage:249 lastpage:261 numberofpages:13 journal:EARTH AND PLANETARY SCIENCE LETTERS http://hdl.handle.net/11381/2316623 doi:10.1016/j.epsl.2010.06.026 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77956057886 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.epsl.2010.06.026 |
container_title |
Earth and Planetary Science Letters |
container_volume |
297 |
container_issue |
1-2 |
container_start_page |
249 |
op_container_end_page |
261 |
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1796316931009019904 |