Preboreal onset of cold-water coral growth beyond the Arctic Circle revealed by coupled radiocarbon and U-series dating and neodymium isotopes
Cold-water coral mounds of Lophelia pertusa are widespread across the Scandinavian shelf, which was completely ice-covered during the Last Glacial Maximum between 22 to 18 ka BP. Rapid deglacial meltdown of the Fennoscandian inland ice and the retreat of its ice-streams freed most of the shelf of ic...
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ftoceanrep:oai:oceanrep.geomar.de:13792 2023-05-15T14:27:16+02:00 Preboreal onset of cold-water coral growth beyond the Arctic Circle revealed by coupled radiocarbon and U-series dating and neodymium isotopes López Correa, M. Montagna, P. Joseph, N. Rüggeberg, Andres Fietzke, Jan Flögel, Sascha Dorschel, B. Goldstein, S. L. Wheeler, A. Freiwald, Andre 2012 text https://oceanrep.geomar.de/id/eprint/13792/ https://oceanrep.geomar.de/id/eprint/13792/1/2012_LopezCorrea_eaFietzke_QSR_.pdf https://doi.org/10.1016/j.quascirev.2011.12.005 en eng Elsevier https://oceanrep.geomar.de/id/eprint/13792/1/2012_LopezCorrea_eaFietzke_QSR_.pdf López Correa, M., Montagna, P., Joseph, N., Rüggeberg, A., Fietzke, J. , Flögel, S., Dorschel, B., Goldstein, S. L., Wheeler, A. and Freiwald, A. (2012) Preboreal onset of cold-water coral growth beyond the Arctic Circle revealed by coupled radiocarbon and U-series dating and neodymium isotopes. Quaternary Science Reviews, 34 . pp. 24-43. DOI 10.1016/j.quascirev.2011.12.005 <https://doi.org/10.1016/j.quascirev.2011.12.005>. doi:10.1016/j.quascirev.2011.12.005 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2012 ftoceanrep https://doi.org/10.1016/j.quascirev.2011.12.005 2023-04-07T15:03:08Z Cold-water coral mounds of Lophelia pertusa are widespread across the Scandinavian shelf, which was completely ice-covered during the Last Glacial Maximum between 22 to 18 ka BP. Rapid deglacial meltdown of the Fennoscandian inland ice and the retreat of its ice-streams freed most of the shelf of ice by ∼15 ka BP. However, cold-water coral growth commenced only after the Pleistocene–Holocene transition at 11.65 ka BP, when modern-like climatic patterns and oceanographic conditions were established. A tight climatic coupling has been constrained with U-series ages. Coupled 14C ages provide local reservoir ages from various gravity cores in a fjord-setting in Stjernsund at 70°N and on the open shelf in Trænadjupet at 66°N. Reinvestigation of earlier 14C coral chronologies suggests that coral ecosystems widely established themselves across the entire 3000 km long Scandinavian shelf prior to ∼10 ka BP. The earliest occurrence of Madrepora oculata at ∼2.4 ka BP suggests a late Holocene colonization of the Norwegian shelf, which is linked to a prominent mound growth hiatus in Trænadjupet (64°N). Mound growth rates near the northern biogeographic boundary of L. pertusa with up to ∼614 cm ka−1 during certain growth periods are much higher than the previously reported fastest rates of ∼220 cm ka−1 from the Irish margin. Contemporaneous rapid fjordbasin sedimentation is slower with ∼63 cm ka−1. Matrix 14C ages overlap with coral 14C ages from the same horizon. This indicates rapid framework construction and efficient trapping of background sediment. Hiatuses are frequent in on-mound sediments and only short periods of coral growth are recorded. Coupled Δ14C and εNd values indicate a persistent Holocene inflow of the North Atlantic Current in Stjernsund, but also deglacial meltwater mixing during the early Holocene prior to ∼9.5 ka BP. Reservoir ages are overall close to the surface marine reservoir age, but ΔR is highly localized. Article in Journal/Newspaper Arctic Arctic Fennoscandian Lophelia pertusa north atlantic current North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Freed ENVELOPE(164.333,164.333,-71.483,-71.483) Quaternary Science Reviews 34 24 43 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Cold-water coral mounds of Lophelia pertusa are widespread across the Scandinavian shelf, which was completely ice-covered during the Last Glacial Maximum between 22 to 18 ka BP. Rapid deglacial meltdown of the Fennoscandian inland ice and the retreat of its ice-streams freed most of the shelf of ice by ∼15 ka BP. However, cold-water coral growth commenced only after the Pleistocene–Holocene transition at 11.65 ka BP, when modern-like climatic patterns and oceanographic conditions were established. A tight climatic coupling has been constrained with U-series ages. Coupled 14C ages provide local reservoir ages from various gravity cores in a fjord-setting in Stjernsund at 70°N and on the open shelf in Trænadjupet at 66°N. Reinvestigation of earlier 14C coral chronologies suggests that coral ecosystems widely established themselves across the entire 3000 km long Scandinavian shelf prior to ∼10 ka BP. The earliest occurrence of Madrepora oculata at ∼2.4 ka BP suggests a late Holocene colonization of the Norwegian shelf, which is linked to a prominent mound growth hiatus in Trænadjupet (64°N). Mound growth rates near the northern biogeographic boundary of L. pertusa with up to ∼614 cm ka−1 during certain growth periods are much higher than the previously reported fastest rates of ∼220 cm ka−1 from the Irish margin. Contemporaneous rapid fjordbasin sedimentation is slower with ∼63 cm ka−1. Matrix 14C ages overlap with coral 14C ages from the same horizon. This indicates rapid framework construction and efficient trapping of background sediment. Hiatuses are frequent in on-mound sediments and only short periods of coral growth are recorded. Coupled Δ14C and εNd values indicate a persistent Holocene inflow of the North Atlantic Current in Stjernsund, but also deglacial meltwater mixing during the early Holocene prior to ∼9.5 ka BP. Reservoir ages are overall close to the surface marine reservoir age, but ΔR is highly localized. |
format |
Article in Journal/Newspaper |
author |
López Correa, M. Montagna, P. Joseph, N. Rüggeberg, Andres Fietzke, Jan Flögel, Sascha Dorschel, B. Goldstein, S. L. Wheeler, A. Freiwald, Andre |
spellingShingle |
López Correa, M. Montagna, P. Joseph, N. Rüggeberg, Andres Fietzke, Jan Flögel, Sascha Dorschel, B. Goldstein, S. L. Wheeler, A. Freiwald, Andre Preboreal onset of cold-water coral growth beyond the Arctic Circle revealed by coupled radiocarbon and U-series dating and neodymium isotopes |
author_facet |
López Correa, M. Montagna, P. Joseph, N. Rüggeberg, Andres Fietzke, Jan Flögel, Sascha Dorschel, B. Goldstein, S. L. Wheeler, A. Freiwald, Andre |
author_sort |
López Correa, M. |
title |
Preboreal onset of cold-water coral growth beyond the Arctic Circle revealed by coupled radiocarbon and U-series dating and neodymium isotopes |
title_short |
Preboreal onset of cold-water coral growth beyond the Arctic Circle revealed by coupled radiocarbon and U-series dating and neodymium isotopes |
title_full |
Preboreal onset of cold-water coral growth beyond the Arctic Circle revealed by coupled radiocarbon and U-series dating and neodymium isotopes |
title_fullStr |
Preboreal onset of cold-water coral growth beyond the Arctic Circle revealed by coupled radiocarbon and U-series dating and neodymium isotopes |
title_full_unstemmed |
Preboreal onset of cold-water coral growth beyond the Arctic Circle revealed by coupled radiocarbon and U-series dating and neodymium isotopes |
title_sort |
preboreal onset of cold-water coral growth beyond the arctic circle revealed by coupled radiocarbon and u-series dating and neodymium isotopes |
publisher |
Elsevier |
publishDate |
2012 |
url |
https://oceanrep.geomar.de/id/eprint/13792/ https://oceanrep.geomar.de/id/eprint/13792/1/2012_LopezCorrea_eaFietzke_QSR_.pdf https://doi.org/10.1016/j.quascirev.2011.12.005 |
long_lat |
ENVELOPE(164.333,164.333,-71.483,-71.483) |
geographic |
Arctic Freed |
geographic_facet |
Arctic Freed |
genre |
Arctic Arctic Fennoscandian Lophelia pertusa north atlantic current North Atlantic |
genre_facet |
Arctic Arctic Fennoscandian Lophelia pertusa north atlantic current North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/13792/1/2012_LopezCorrea_eaFietzke_QSR_.pdf López Correa, M., Montagna, P., Joseph, N., Rüggeberg, A., Fietzke, J. , Flögel, S., Dorschel, B., Goldstein, S. L., Wheeler, A. and Freiwald, A. (2012) Preboreal onset of cold-water coral growth beyond the Arctic Circle revealed by coupled radiocarbon and U-series dating and neodymium isotopes. Quaternary Science Reviews, 34 . pp. 24-43. DOI 10.1016/j.quascirev.2011.12.005 <https://doi.org/10.1016/j.quascirev.2011.12.005>. doi:10.1016/j.quascirev.2011.12.005 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2011.12.005 |
container_title |
Quaternary Science Reviews |
container_volume |
34 |
container_start_page |
24 |
op_container_end_page |
43 |
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1766300911195389952 |