The Initial Opening of the Drake Passage Occurred During ca. 62‐59 Ma

Autores
Gao, Liang; Guo, Xiaoqian; Pei, Junling; Gelfo, Javier Nicolás; Hu, Xinwei; Li, Sha; Jiang, Tian; Shi, Meinan; You, Xuelian; Gu, Fang; Zhang, Yunying; Sun, Zhen; He, Zhiliang; Li, Ruoshuang; Tong, Yabo; Yang, Zhenyu; Zhao, Yue
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Although the Drake Passage has been considered a critical component of ocean circulation and climate, its initial opening age remains controversial due to the weak constraints on the paleoposition of the Antarctic Peninsula. The biotic impact of this initial opening indicates, for example, that land-mammal faunas probably stopped their gene flow between Antarctica and South America. Here, new zircon U‐Pb geochronological studies are conducted on the Barchans Islands, providing a critical age constraint on the paleopole (Latitude = 76.9°S, Longitude = 332.1°E, A95 = 5.9°) of the peninsula at ca. 59 Ma. Geochronological and paleomagnetic studies on Anagram Island and King George Island provide a new paleopole (Latitude = 77.4°S, Longitude = 23.5°E, A95 = 4.4°) of the Antarctic Peninsula at ca. 55 Ma. When combined with existing evidence, the initial separation between the Antarctic Peninsula and the Patagonian Andes is restricted to be between ca. 62 and 59 Ma, caused by the clockwise rotation of the Antarctic Peninsula. The separation induced the initial opening of the Drake Passage and the formation of the shallow proto‐Antarctic circumpolar current, as well as Paleocene global cooling.
Fil: Gao, Liang. China University Of Geosciences; China
Fil: Guo, Xiaoqian. China University Of Geosciences; China
Fil: Pei, Junling. East China University Of Technology; China
Fil: Gelfo, Javier Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina
Fil: Hu, Xinwei. China University Of Geosciences; China
Fil: Li, Sha. Chinese Academy of Sciences; República de China
Fil: Jiang, Tian. China University Of Geosciences; China
Fil: Shi, Meinan. China University Of Geosciences; China
Fil: You, Xuelian. China University Of Geosciences; China
Fil: Gu, Fang. China University Of Geosciences; China. Universität Göttingen; Alemania
Fil: Zhang, Yunying. Chinese Academy of Sciences; República de China
Fil: Sun, Zhen. Chinese Academy of Sciences; República de China
Fil: He, Zhiliang. China University Of Geosciences; China
Fil: Li, Ruoshuang. China University Of Geosciences; China
Fil: Tong, Yabo. Ministry of Land and Resources; China
Fil: Yang, Zhenyu. Capital Normal University; China
Fil: Zhao, Yue. China University Of Geosciences; China
Materia
Gondwana Break-up
Antarctica
South America
Drake Passage
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/271920
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/271920
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The Initial Opening of the Drake Passage Occurred During ca. 62‐59 MaGao, LiangGuo, XiaoqianPei, JunlingGelfo, Javier NicolásHu, XinweiLi, ShaJiang, TianShi, MeinanYou, XuelianGu, FangZhang, YunyingSun, ZhenHe, ZhiliangLi, RuoshuangTong, YaboYang, ZhenyuZhao, YueGondwana Break-upAntarcticaSouth AmericaDrake Passagehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Although the Drake Passage has been considered a critical component of ocean circulation and climate, its initial opening age remains controversial due to the weak constraints on the paleoposition of the Antarctic Peninsula. The biotic impact of this initial opening indicates, for example, that land-mammal faunas probably stopped their gene flow between Antarctica and South America. Here, new zircon U‐Pb geochronological studies are conducted on the Barchans Islands, providing a critical age constraint on the paleopole (Latitude = 76.9°S, Longitude = 332.1°E, A95 = 5.9°) of the peninsula at ca. 59 Ma. Geochronological and paleomagnetic studies on Anagram Island and King George Island provide a new paleopole (Latitude = 77.4°S, Longitude = 23.5°E, A95 = 4.4°) of the Antarctic Peninsula at ca. 55 Ma. When combined with existing evidence, the initial separation between the Antarctic Peninsula and the Patagonian Andes is restricted to be between ca. 62 and 59 Ma, caused by the clockwise rotation of the Antarctic Peninsula. The separation induced the initial opening of the Drake Passage and the formation of the shallow proto‐Antarctic circumpolar current, as well as Paleocene global cooling.Fil: Gao, Liang. China University Of Geosciences; ChinaFil: Guo, Xiaoqian. China University Of Geosciences; ChinaFil: Pei, Junling. East China University Of Technology; ChinaFil: Gelfo, Javier Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; ArgentinaFil: Hu, Xinwei. China University Of Geosciences; ChinaFil: Li, Sha. Chinese Academy of Sciences; República de ChinaFil: Jiang, Tian. China University Of Geosciences; ChinaFil: Shi, Meinan. China University Of Geosciences; ChinaFil: You, Xuelian. China University Of Geosciences; ChinaFil: Gu, Fang. China University Of Geosciences; China. Universität Göttingen; AlemaniaFil: Zhang, Yunying. Chinese Academy of Sciences; República de ChinaFil: Sun, Zhen. Chinese Academy of Sciences; República de ChinaFil: He, Zhiliang. China University Of Geosciences; ChinaFil: Li, Ruoshuang. China University Of Geosciences; ChinaFil: Tong, Yabo. Ministry of Land and Resources; ChinaFil: Yang, Zhenyu. Capital Normal University; ChinaFil: Zhao, Yue. China University Of Geosciences; ChinaAmerican Geophysical Union2025-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/271920Gao, Liang; Guo, Xiaoqian; Pei, Junling; Gelfo, Javier Nicolás; Hu, Xinwei; et al.; The Initial Opening of the Drake Passage Occurred During ca. 62‐59 Ma; American Geophysical Union; Geophysical Research Letters; 52; 7; 4-2025; 1-110094-8276CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024GL111455info:eu-repo/semantics/altIdentifier/doi/10.1029/2024GL111455info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:35:03Zoai:ri.conicet.gov.ar:11336/271920instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:35:03.859CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The Initial Opening of the Drake Passage Occurred During ca. 62‐59 Ma
title The Initial Opening of the Drake Passage Occurred During ca. 62‐59 Ma
spellingShingle The Initial Opening of the Drake Passage Occurred During ca. 62‐59 Ma
Gao, Liang
Gondwana Break-up
Antarctica
South America
Drake Passage
title_short The Initial Opening of the Drake Passage Occurred During ca. 62‐59 Ma
title_full The Initial Opening of the Drake Passage Occurred During ca. 62‐59 Ma
title_fullStr The Initial Opening of the Drake Passage Occurred During ca. 62‐59 Ma
title_full_unstemmed The Initial Opening of the Drake Passage Occurred During ca. 62‐59 Ma
title_sort The Initial Opening of the Drake Passage Occurred During ca. 62‐59 Ma
dc.creator.none.fl_str_mv Gao, Liang
Guo, Xiaoqian
Pei, Junling
Gelfo, Javier Nicolás
Hu, Xinwei
Li, Sha
Jiang, Tian
Shi, Meinan
You, Xuelian
Gu, Fang
Zhang, Yunying
Sun, Zhen
He, Zhiliang
Li, Ruoshuang
Tong, Yabo
Yang, Zhenyu
Zhao, Yue
author Gao, Liang
author_facet Gao, Liang
Guo, Xiaoqian
Pei, Junling
Gelfo, Javier Nicolás
Hu, Xinwei
Li, Sha
Jiang, Tian
Shi, Meinan
You, Xuelian
Gu, Fang
Zhang, Yunying
Sun, Zhen
He, Zhiliang
Li, Ruoshuang
Tong, Yabo
Yang, Zhenyu
Zhao, Yue
author_role author
author2 Guo, Xiaoqian
Pei, Junling
Gelfo, Javier Nicolás
Hu, Xinwei
Li, Sha
Jiang, Tian
Shi, Meinan
You, Xuelian
Gu, Fang
Zhang, Yunying
Sun, Zhen
He, Zhiliang
Li, Ruoshuang
Tong, Yabo
Yang, Zhenyu
Zhao, Yue
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Gondwana Break-up
Antarctica
South America
Drake Passage
topic Gondwana Break-up
Antarctica
South America
Drake Passage
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Although the Drake Passage has been considered a critical component of ocean circulation and climate, its initial opening age remains controversial due to the weak constraints on the paleoposition of the Antarctic Peninsula. The biotic impact of this initial opening indicates, for example, that land-mammal faunas probably stopped their gene flow between Antarctica and South America. Here, new zircon U‐Pb geochronological studies are conducted on the Barchans Islands, providing a critical age constraint on the paleopole (Latitude = 76.9°S, Longitude = 332.1°E, A95 = 5.9°) of the peninsula at ca. 59 Ma. Geochronological and paleomagnetic studies on Anagram Island and King George Island provide a new paleopole (Latitude = 77.4°S, Longitude = 23.5°E, A95 = 4.4°) of the Antarctic Peninsula at ca. 55 Ma. When combined with existing evidence, the initial separation between the Antarctic Peninsula and the Patagonian Andes is restricted to be between ca. 62 and 59 Ma, caused by the clockwise rotation of the Antarctic Peninsula. The separation induced the initial opening of the Drake Passage and the formation of the shallow proto‐Antarctic circumpolar current, as well as Paleocene global cooling.
Fil: Gao, Liang. China University Of Geosciences; China
Fil: Guo, Xiaoqian. China University Of Geosciences; China
Fil: Pei, Junling. East China University Of Technology; China
Fil: Gelfo, Javier Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina
Fil: Hu, Xinwei. China University Of Geosciences; China
Fil: Li, Sha. Chinese Academy of Sciences; República de China
Fil: Jiang, Tian. China University Of Geosciences; China
Fil: Shi, Meinan. China University Of Geosciences; China
Fil: You, Xuelian. China University Of Geosciences; China
Fil: Gu, Fang. China University Of Geosciences; China. Universität Göttingen; Alemania
Fil: Zhang, Yunying. Chinese Academy of Sciences; República de China
Fil: Sun, Zhen. Chinese Academy of Sciences; República de China
Fil: He, Zhiliang. China University Of Geosciences; China
Fil: Li, Ruoshuang. China University Of Geosciences; China
Fil: Tong, Yabo. Ministry of Land and Resources; China
Fil: Yang, Zhenyu. Capital Normal University; China
Fil: Zhao, Yue. China University Of Geosciences; China
description Although the Drake Passage has been considered a critical component of ocean circulation and climate, its initial opening age remains controversial due to the weak constraints on the paleoposition of the Antarctic Peninsula. The biotic impact of this initial opening indicates, for example, that land-mammal faunas probably stopped their gene flow between Antarctica and South America. Here, new zircon U‐Pb geochronological studies are conducted on the Barchans Islands, providing a critical age constraint on the paleopole (Latitude = 76.9°S, Longitude = 332.1°E, A95 = 5.9°) of the peninsula at ca. 59 Ma. Geochronological and paleomagnetic studies on Anagram Island and King George Island provide a new paleopole (Latitude = 77.4°S, Longitude = 23.5°E, A95 = 4.4°) of the Antarctic Peninsula at ca. 55 Ma. When combined with existing evidence, the initial separation between the Antarctic Peninsula and the Patagonian Andes is restricted to be between ca. 62 and 59 Ma, caused by the clockwise rotation of the Antarctic Peninsula. The separation induced the initial opening of the Drake Passage and the formation of the shallow proto‐Antarctic circumpolar current, as well as Paleocene global cooling.
publishDate 2025
dc.date.none.fl_str_mv 2025-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/271920
Gao, Liang; Guo, Xiaoqian; Pei, Junling; Gelfo, Javier Nicolás; Hu, Xinwei; et al.; The Initial Opening of the Drake Passage Occurred During ca. 62‐59 Ma; American Geophysical Union; Geophysical Research Letters; 52; 7; 4-2025; 1-11
0094-8276
CONICET Digital
CONICET
url http://hdl.handle.net/11336/271920
identifier_str_mv Gao, Liang; Guo, Xiaoqian; Pei, Junling; Gelfo, Javier Nicolás; Hu, Xinwei; et al.; The Initial Opening of the Drake Passage Occurred During ca. 62‐59 Ma; American Geophysical Union; Geophysical Research Letters; 52; 7; 4-2025; 1-11
0094-8276
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024GL111455
info:eu-repo/semantics/altIdentifier/doi/10.1029/2024GL111455
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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