Younger Dryas to Early Holocene paleoclimate in Cantabria (N Spain): Constraints from speleothem Mg, annual fluorescence banding and stable isotope records
The Younger Dryas (YD) stadial represents the most abrupt climate change of the Earth's recent history. Thus, understanding its causes and different local responses is relevant for Quaternary paleoclimatology. We present a speleothem high-resolution proxy record of the Lateglacial to Early Holo...
Published in: | Quaternary Science Reviews |
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Elsevier
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ftunivcmadrid:oai:www.ucm.es:49849 2023-05-15T16:29:58+02:00 Younger Dryas to Early Holocene paleoclimate in Cantabria (N Spain): Constraints from speleothem Mg, annual fluorescence banding and stable isotope records Rossi, Carlos Bajo, Petra Lozano, Rafael P. Hellstrom, John 2018-07-15 application/pdf https://eprints.ucm.es/id/eprint/49849/ https://eprints.ucm.es/id/eprint/49849/1/Younger%20Dryas%20to%20Early%20Holocene%20paleoclimate%20in%20Cantabria.pdf https://www.sciencedirect.com/science/article/pii/S0277379118300763 https://doi.org/10.1016/j.quascirev.2018.05.025 en eng Elsevier https://eprints.ucm.es/id/eprint/49849/1/Younger%20Dryas%20to%20Early%20Holocene%20paleoclimate%20in%20Cantabria.pdf info:eu-repo/semantics/restrictedAccess Geología estratigráfica Geoquímica info:eu-repo/semantics/article PeerReviewed 2018 ftunivcmadrid https://doi.org/10.1016/j.quascirev.2018.05.025 2022-05-12T20:07:18Z The Younger Dryas (YD) stadial represents the most abrupt climate change of the Earth's recent history. Thus, understanding its causes and different local responses is relevant for Quaternary paleoclimatology. We present a speleothem high-resolution proxy record of the Lateglacial to Early Holocene paleoclimate of the Cantabrian Cordillera (N Spain), a strategic location to evaluate the influence of North Atlantic events such as the YD on South-Western Europe. Fluorescence lamination, growth-rate, stable-isotope, and [Mg] records from stalagmite SIR-1 were dated using an age-depth model constrained by U-Th dates and annual-lamina counting. The YD is recorded as a prominent positive δ13C excursion whose chronology (12.95 ± 0.14 to 11.62 ± 0.16 ka) and shape closely agree with the GS-1 stadial as defined in Greenland ice, supporting the event synchronicity in both areas. A colder and drier YD climate limited soil productivity and dripwater availability, leading to higher δ13C and [Mg], reduced growth rate, and virtually absent fluorescence lamination. The early YD record (until ∼12.5 ka) reflects increasing aridity, whereas the late YD (from ∼12.2 ka on) shows the opposite trend. At the YD boundaries, temperature changes influenced the [Mg] record by modifying the Mg partition into calcite. However, this effect was superseded by major changes in dripwater Mg/Ca linked to rainfall variations. During the Early Holocene, the Arnero Sierra was forested and had a relatively warm and humid seasonal climate, indicated in SIR-1 by higher growth rates, lower δ13C and [Mg], and well-developed fluorescent lamination. Similar to other high-resolution stalagmitic records of the Cordillera, from ∼8.5 to 8.0 ka SIR-1 reflects a temporary trend of increasing aridity. Article in Journal/Newspaper Greenland North Atlantic Universidad Complutense de Madrid (UCM): E-Prints Complutense Greenland Quaternary Science Reviews 192 71 85 |
institution |
Open Polar |
collection |
Universidad Complutense de Madrid (UCM): E-Prints Complutense |
op_collection_id |
ftunivcmadrid |
language |
English |
topic |
Geología estratigráfica Geoquímica |
spellingShingle |
Geología estratigráfica Geoquímica Rossi, Carlos Bajo, Petra Lozano, Rafael P. Hellstrom, John Younger Dryas to Early Holocene paleoclimate in Cantabria (N Spain): Constraints from speleothem Mg, annual fluorescence banding and stable isotope records |
topic_facet |
Geología estratigráfica Geoquímica |
description |
The Younger Dryas (YD) stadial represents the most abrupt climate change of the Earth's recent history. Thus, understanding its causes and different local responses is relevant for Quaternary paleoclimatology. We present a speleothem high-resolution proxy record of the Lateglacial to Early Holocene paleoclimate of the Cantabrian Cordillera (N Spain), a strategic location to evaluate the influence of North Atlantic events such as the YD on South-Western Europe. Fluorescence lamination, growth-rate, stable-isotope, and [Mg] records from stalagmite SIR-1 were dated using an age-depth model constrained by U-Th dates and annual-lamina counting. The YD is recorded as a prominent positive δ13C excursion whose chronology (12.95 ± 0.14 to 11.62 ± 0.16 ka) and shape closely agree with the GS-1 stadial as defined in Greenland ice, supporting the event synchronicity in both areas. A colder and drier YD climate limited soil productivity and dripwater availability, leading to higher δ13C and [Mg], reduced growth rate, and virtually absent fluorescence lamination. The early YD record (until ∼12.5 ka) reflects increasing aridity, whereas the late YD (from ∼12.2 ka on) shows the opposite trend. At the YD boundaries, temperature changes influenced the [Mg] record by modifying the Mg partition into calcite. However, this effect was superseded by major changes in dripwater Mg/Ca linked to rainfall variations. During the Early Holocene, the Arnero Sierra was forested and had a relatively warm and humid seasonal climate, indicated in SIR-1 by higher growth rates, lower δ13C and [Mg], and well-developed fluorescent lamination. Similar to other high-resolution stalagmitic records of the Cordillera, from ∼8.5 to 8.0 ka SIR-1 reflects a temporary trend of increasing aridity. |
format |
Article in Journal/Newspaper |
author |
Rossi, Carlos Bajo, Petra Lozano, Rafael P. Hellstrom, John |
author_facet |
Rossi, Carlos Bajo, Petra Lozano, Rafael P. Hellstrom, John |
author_sort |
Rossi, Carlos |
title |
Younger Dryas to Early Holocene paleoclimate in Cantabria (N Spain): Constraints from speleothem Mg, annual fluorescence banding and stable isotope records |
title_short |
Younger Dryas to Early Holocene paleoclimate in Cantabria (N Spain): Constraints from speleothem Mg, annual fluorescence banding and stable isotope records |
title_full |
Younger Dryas to Early Holocene paleoclimate in Cantabria (N Spain): Constraints from speleothem Mg, annual fluorescence banding and stable isotope records |
title_fullStr |
Younger Dryas to Early Holocene paleoclimate in Cantabria (N Spain): Constraints from speleothem Mg, annual fluorescence banding and stable isotope records |
title_full_unstemmed |
Younger Dryas to Early Holocene paleoclimate in Cantabria (N Spain): Constraints from speleothem Mg, annual fluorescence banding and stable isotope records |
title_sort |
younger dryas to early holocene paleoclimate in cantabria (n spain): constraints from speleothem mg, annual fluorescence banding and stable isotope records |
publisher |
Elsevier |
publishDate |
2018 |
url |
https://eprints.ucm.es/id/eprint/49849/ https://eprints.ucm.es/id/eprint/49849/1/Younger%20Dryas%20to%20Early%20Holocene%20paleoclimate%20in%20Cantabria.pdf https://www.sciencedirect.com/science/article/pii/S0277379118300763 https://doi.org/10.1016/j.quascirev.2018.05.025 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland North Atlantic |
genre_facet |
Greenland North Atlantic |
op_relation |
https://eprints.ucm.es/id/eprint/49849/1/Younger%20Dryas%20to%20Early%20Holocene%20paleoclimate%20in%20Cantabria.pdf |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2018.05.025 |
container_title |
Quaternary Science Reviews |
container_volume |
192 |
container_start_page |
71 |
op_container_end_page |
85 |
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1766019675294007296 |