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Alps to Apennines zircon roller coaster along the Adria microplate margin
We have traced the particle path of high-pressure metasedimentary rocks on Elba Island, Northern Apennines, with the help of a U-Pb-Hf detrital zircon study. One quarter of the analysed zircons are surprisingly young, 41-30 Ma, with a main age peak at ca. 32 Ma, indicating an unexpected early Oligoc...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5807382/ https://www.ncbi.nlm.nih.gov/pubmed/29426906 http://dx.doi.org/10.1038/s41598-018-20979-w |
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author | Jacobs, J. Paoli, G. Rocchi, S. Ksienzyk, A. K. Sirevaag, H. Elburg, M. A. |
author_facet | Jacobs, J. Paoli, G. Rocchi, S. Ksienzyk, A. K. Sirevaag, H. Elburg, M. A. |
author_sort | Jacobs, J. |
collection | PubMed |
description | We have traced the particle path of high-pressure metasedimentary rocks on Elba Island, Northern Apennines, with the help of a U-Pb-Hf detrital zircon study. One quarter of the analysed zircons are surprisingly young, 41-30 Ma, with a main age peak at ca. 32 Ma, indicating an unexpected early Oligocene maximum deposition age. These Oligocene ages with negative εHf indicate a volcanic source region in the central-southern Alps. Though young by geological means, these zircons record an extraordinary geodynamic history. They originated in a volcanic arc, during the convergence/collision of the the Adria microplate with Europe from ca. 65 to 30 Ma. Thereafter, the Oligocene zircons travelled ca. 400 km southward along the Adria margin and the accretionary prism to present-day Tuscany, where they were subducted to depths of at least 40 km. Shortly thereafter, they were brought to the surface again in the wake of hinge roll back of the Apennine subduction zone and the resulting rapid extensional exhumation. Such a zircon roller coaster requires a microplate that has back-to-back subduction zones with opposing polarities on two sides. |
format | Online Article Text |
id | pubmed-5807382 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-58073822018-02-14 Alps to Apennines zircon roller coaster along the Adria microplate margin Jacobs, J. Paoli, G. Rocchi, S. Ksienzyk, A. K. Sirevaag, H. Elburg, M. A. Sci Rep Article We have traced the particle path of high-pressure metasedimentary rocks on Elba Island, Northern Apennines, with the help of a U-Pb-Hf detrital zircon study. One quarter of the analysed zircons are surprisingly young, 41-30 Ma, with a main age peak at ca. 32 Ma, indicating an unexpected early Oligocene maximum deposition age. These Oligocene ages with negative εHf indicate a volcanic source region in the central-southern Alps. Though young by geological means, these zircons record an extraordinary geodynamic history. They originated in a volcanic arc, during the convergence/collision of the the Adria microplate with Europe from ca. 65 to 30 Ma. Thereafter, the Oligocene zircons travelled ca. 400 km southward along the Adria margin and the accretionary prism to present-day Tuscany, where they were subducted to depths of at least 40 km. Shortly thereafter, they were brought to the surface again in the wake of hinge roll back of the Apennine subduction zone and the resulting rapid extensional exhumation. Such a zircon roller coaster requires a microplate that has back-to-back subduction zones with opposing polarities on two sides. Nature Publishing Group UK 2018-02-09 /pmc/articles/PMC5807382/ /pubmed/29426906 http://dx.doi.org/10.1038/s41598-018-20979-w Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Jacobs, J. Paoli, G. Rocchi, S. Ksienzyk, A. K. Sirevaag, H. Elburg, M. A. Alps to Apennines zircon roller coaster along the Adria microplate margin |
title | Alps to Apennines zircon roller coaster along the Adria microplate margin |
title_full | Alps to Apennines zircon roller coaster along the Adria microplate margin |
title_fullStr | Alps to Apennines zircon roller coaster along the Adria microplate margin |
title_full_unstemmed | Alps to Apennines zircon roller coaster along the Adria microplate margin |
title_short | Alps to Apennines zircon roller coaster along the Adria microplate margin |
title_sort | alps to apennines zircon roller coaster along the adria microplate margin |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5807382/ https://www.ncbi.nlm.nih.gov/pubmed/29426906 http://dx.doi.org/10.1038/s41598-018-20979-w |
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