Evidences of the Blake and Iceland Basin magnetic excursions in southeastern Iberia and chronological implications for the Padul sedimentary record
Acknowledgments This study was supported by the project B-RNM-144-UGR18 and ARNM- 336-UGR20 of the action “Proyectos I + D + i del Programa Operativo FEDER 2018 - Junta de Andalucía-UGR”, the projects CGL2013-47038-R and CGL2017-85415-R, of the “Ministerio de Economía y Competitividad of Spain and F...
Published in: | Quaternary Geochronology |
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Online Access: | https://hdl.handle.net/10481/79330 https://doi.org/10.1016/j.quageo.2022.101421 |
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ftunivgranada:oai:digibug.ugr.es:10481/79330 2023-05-15T16:48:02+02:00 Evidences of the Blake and Iceland Basin magnetic excursions in southeastern Iberia and chronological implications for the Padul sedimentary record Valero, Luis García-Alix Daroca, Antonio Jiménez Moreno, Gonzalo Camuera, Jon López Avilés, Alejandro Jesús Ramos-Román, María J. Jiménez-Espejo, Francisco José 2022-12-07 https://hdl.handle.net/10481/79330 https://doi.org/10.1016/j.quageo.2022.101421 eng eng Elsevier L. Valero et al. Evidences of the Blake and Iceland Basin magnetic excursions in southeastern Iberia and chronological implications for the Padul sedimentary record. Quaternary Geochronology 74 (2023) 101421 [https://doi.org/10.1016/j.quageo.2022.101421] https://hdl.handle.net/10481/79330 doi:10.1016/j.quageo.2022.101421 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess CC-BY-NC-ND Paleoclimate Magnetic excursion Blake Iceland Basin Padul Mediterranean paleoclimate info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2022 ftunivgranada https://doi.org/10.1016/j.quageo.2022.101421 2023-03-01T00:27:29Z Acknowledgments This study was supported by the project B-RNM-144-UGR18 and ARNM- 336-UGR20 of the action “Proyectos I + D + i del Programa Operativo FEDER 2018 - Junta de Andalucía-UGR”, the projects CGL2013-47038-R and CGL2017-85415-R, of the “Ministerio de Economía y Competitividad of Spain and Fondo Europeo de Desarrollo Regional FEDER”, and the research group RNM-190 (Junta de Andalucía), and the projects P18-RT-871 and Retos P20_00059 of Junta de Andalucia. A.G.-A. was also supported by a Ram´on y Cajal Fellowship RYC-2015-18966 of the Spanish Government (Ministerio de Economía y Competividad). A.L.-A PhD is funded by BES-2018-084293 (Ministerio de Economía y Competividad). We thank the Paleomagnetic Laboratory CCiTUB-Geo3Bcn CSIC for the support on paleomagnetic analysis. LV and EB thank the Geomodels Research Institute (UB). We are very grateful to two anonymous reviewers and to the editor Christian Zeeden. The Padul-15-05 sediment core provides an exceptional perspective of the paleoenvironmental and climate change in the Western Mediterranean region for the last ca. 200 kyr. However, even though a robust chronology mainly relying on radiometric dating is available for the last 50 ka, the chronology for the older sediments is not yet fully resolved. Ages for the bottom part of the core (>21 m) were previously inferred from amino-acid racemization dating and sediment accumulation rates. In this work, we provide a more accurate chronology for the older part (>100 kyr) of the Padul-15-05 sediment core record based on the recognition of past Earth's magnetic excursions. We identify an interval prone of reversed polarity samples close to MIS-5e/5 d transition that we correlate to the Blake geomagnetic excursion (116.5 kyr–112 kyr). In addition, we identify an interval of low inclinations and two reversed samples that we interpret as the Iceland Basin geomagnetic excursion (192.7 kyr–187.7 kyr: wide scenario of VGP <40°). Our new results, which include IRM acquisition curves that contribute to ... Article in Journal/Newspaper Iceland DIGIBUG: Repositorio Institucional de la Universidad de Granada Quaternary Geochronology 74 101421 |
institution |
Open Polar |
collection |
DIGIBUG: Repositorio Institucional de la Universidad de Granada |
op_collection_id |
ftunivgranada |
language |
English |
topic |
Paleoclimate Magnetic excursion Blake Iceland Basin Padul Mediterranean paleoclimate |
spellingShingle |
Paleoclimate Magnetic excursion Blake Iceland Basin Padul Mediterranean paleoclimate Valero, Luis García-Alix Daroca, Antonio Jiménez Moreno, Gonzalo Camuera, Jon López Avilés, Alejandro Jesús Ramos-Román, María J. Jiménez-Espejo, Francisco José Evidences of the Blake and Iceland Basin magnetic excursions in southeastern Iberia and chronological implications for the Padul sedimentary record |
topic_facet |
Paleoclimate Magnetic excursion Blake Iceland Basin Padul Mediterranean paleoclimate |
description |
Acknowledgments This study was supported by the project B-RNM-144-UGR18 and ARNM- 336-UGR20 of the action “Proyectos I + D + i del Programa Operativo FEDER 2018 - Junta de Andalucía-UGR”, the projects CGL2013-47038-R and CGL2017-85415-R, of the “Ministerio de Economía y Competitividad of Spain and Fondo Europeo de Desarrollo Regional FEDER”, and the research group RNM-190 (Junta de Andalucía), and the projects P18-RT-871 and Retos P20_00059 of Junta de Andalucia. A.G.-A. was also supported by a Ram´on y Cajal Fellowship RYC-2015-18966 of the Spanish Government (Ministerio de Economía y Competividad). A.L.-A PhD is funded by BES-2018-084293 (Ministerio de Economía y Competividad). We thank the Paleomagnetic Laboratory CCiTUB-Geo3Bcn CSIC for the support on paleomagnetic analysis. LV and EB thank the Geomodels Research Institute (UB). We are very grateful to two anonymous reviewers and to the editor Christian Zeeden. The Padul-15-05 sediment core provides an exceptional perspective of the paleoenvironmental and climate change in the Western Mediterranean region for the last ca. 200 kyr. However, even though a robust chronology mainly relying on radiometric dating is available for the last 50 ka, the chronology for the older sediments is not yet fully resolved. Ages for the bottom part of the core (>21 m) were previously inferred from amino-acid racemization dating and sediment accumulation rates. In this work, we provide a more accurate chronology for the older part (>100 kyr) of the Padul-15-05 sediment core record based on the recognition of past Earth's magnetic excursions. We identify an interval prone of reversed polarity samples close to MIS-5e/5 d transition that we correlate to the Blake geomagnetic excursion (116.5 kyr–112 kyr). In addition, we identify an interval of low inclinations and two reversed samples that we interpret as the Iceland Basin geomagnetic excursion (192.7 kyr–187.7 kyr: wide scenario of VGP <40°). Our new results, which include IRM acquisition curves that contribute to ... |
format |
Article in Journal/Newspaper |
author |
Valero, Luis García-Alix Daroca, Antonio Jiménez Moreno, Gonzalo Camuera, Jon López Avilés, Alejandro Jesús Ramos-Román, María J. Jiménez-Espejo, Francisco José |
author_facet |
Valero, Luis García-Alix Daroca, Antonio Jiménez Moreno, Gonzalo Camuera, Jon López Avilés, Alejandro Jesús Ramos-Román, María J. Jiménez-Espejo, Francisco José |
author_sort |
Valero, Luis |
title |
Evidences of the Blake and Iceland Basin magnetic excursions in southeastern Iberia and chronological implications for the Padul sedimentary record |
title_short |
Evidences of the Blake and Iceland Basin magnetic excursions in southeastern Iberia and chronological implications for the Padul sedimentary record |
title_full |
Evidences of the Blake and Iceland Basin magnetic excursions in southeastern Iberia and chronological implications for the Padul sedimentary record |
title_fullStr |
Evidences of the Blake and Iceland Basin magnetic excursions in southeastern Iberia and chronological implications for the Padul sedimentary record |
title_full_unstemmed |
Evidences of the Blake and Iceland Basin magnetic excursions in southeastern Iberia and chronological implications for the Padul sedimentary record |
title_sort |
evidences of the blake and iceland basin magnetic excursions in southeastern iberia and chronological implications for the padul sedimentary record |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://hdl.handle.net/10481/79330 https://doi.org/10.1016/j.quageo.2022.101421 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
L. Valero et al. Evidences of the Blake and Iceland Basin magnetic excursions in southeastern Iberia and chronological implications for the Padul sedimentary record. Quaternary Geochronology 74 (2023) 101421 [https://doi.org/10.1016/j.quageo.2022.101421] https://hdl.handle.net/10481/79330 doi:10.1016/j.quageo.2022.101421 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.quageo.2022.101421 |
container_title |
Quaternary Geochronology |
container_volume |
74 |
container_start_page |
101421 |
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1766038126106509312 |