Mesoproterozoic and Paleoproterozoic subcontinental lithospheric mantle domains beneath southern Patagonia: Isotopic evidence for its connection to Africa and Antarctica
New isotopic studies on mantle xenoliths from Santa Cruz Province, southern Patagonia, Argentina, reveal that at least three discrete subcontinental lithospheric mantle (SCLM) domains—the Deseado Massif, Tres Lagos, and Pali Aike—form the southernmost part of South America. Re-Os systematics yield e...
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ftconicet:oai:ri.conicet.gov.ar:11336/6492 2023-10-09T21:47:16+02:00 Mesoproterozoic and Paleoproterozoic subcontinental lithospheric mantle domains beneath southern Patagonia: Isotopic evidence for its connection to Africa and Antarctica Mundl, Andrea Ntaflos, Theodoros Ackerman, Lukas Bizimis, Michael Bjerg, Ernesto Alfredo Hauzenberger, Christoph A. application/pdf http://hdl.handle.net/11336/6492 eng eng Geological Society of America info:eu-repo/semantics/altIdentifier/doi/ info:eu-repo/semantics/altIdentifier/doi/10.1130/G36344.1 info:eu-repo/semantics/altIdentifier/url/http://geology.gsapubs.org/content/43/1/39 info:eu-repo/semantics/altIdentifier/url/http://geology.geoscienceworld.org/content/43/1/39 http://hdl.handle.net/11336/6492 Mundl, Andrea; Ntaflos, Theodoros; Ackerman, Lukas; Bizimis, Michael; Bjerg, Ernesto Alfredo; et al.; Mesoproterozoic and Paleoproterozoic subcontinental lithospheric mantle domains beneath southern Patagonia: Isotopic evidence for its connection to Africa and Antarctica; Geological Society of America; Geology; 43; 1; 1-2015; 39-42 0091-7613 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ MESOPROTEROZOIC PALEOPROTEROZOIC MANTLE PATAGONIA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1130/G36344.1 2023-09-24T19:11:06Z New isotopic studies on mantle xenoliths from Santa Cruz Province, southern Patagonia, Argentina, reveal that at least three discrete subcontinental lithospheric mantle (SCLM) domains—the Deseado Massif, Tres Lagos, and Pali Aike—form the southernmost part of South America. Re-Os systematics yield early Paleoproterozoic (up to 2.5 Ga) SCLM formation ages (rhenium depletion ages, TRD) for Pali Aike spinel peridotites, while samples from the Deseado Massif and Tres Lagos indicate a younger SCLM origin with Neoproterozoic to Mesoproterozoic (0.9–1.3 Ga) and Mesoproterozoic to late Paleoproterozoic (1.3–1.9 Ga) TRD ages, respectively. Hf-Sr-Nd isotopic compositions indicate metasomatic overprinting of the majority of the samples, which, however, has not affected the Os isotopic system. Based on similar formation ages, the geological evolution of the Deseado Massif is most likely connected to the evolution of the Namaqua-Natal belt of South Africa. TRD ages from SCLM domains underneath Tres Lagos and Pali Aike indicate a common origin with crustal sections from Shackleton Range, Antarctica, positioning the southern tip of South America closer to west Antarctica in the reconstructed Rodinia supercontinent than previously assumed. Fil: Mundl, Andrea. University of Vienna.Department of Lithospheric Research; Austria Fil: Ntaflos, Theodoros. University of Vienna. Department of Lithospheric Research; Austria Fil: Ackerman, Lukas. Academy of Sciences of the Czech Republic; República Checa. Czech Geological Survey; República Checa Fil: Bizimis, Michael. University of South Carolina; Estados Unidos Fil: Bjerg, Ernesto Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahía Blanca. Instituto Geológico del Sur; Argentina. Universidad Nacional del Sur; Argentina Fil: Hauzenberger, Christoph A. University of Graz. Institute for Earth Sciences; Austria Article in Journal/Newspaper Antarc* Antarctica West Antarctica CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Patagonia West Antarctica Shackleton Argentina Shackleton Range ENVELOPE(-26.000,-26.000,-80.833,-80.833) Geology 43 1 39 42 |
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Open Polar |
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CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
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ftconicet |
language |
English |
topic |
MESOPROTEROZOIC PALEOPROTEROZOIC MANTLE PATAGONIA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
MESOPROTEROZOIC PALEOPROTEROZOIC MANTLE PATAGONIA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Mundl, Andrea Ntaflos, Theodoros Ackerman, Lukas Bizimis, Michael Bjerg, Ernesto Alfredo Hauzenberger, Christoph A. Mesoproterozoic and Paleoproterozoic subcontinental lithospheric mantle domains beneath southern Patagonia: Isotopic evidence for its connection to Africa and Antarctica |
topic_facet |
MESOPROTEROZOIC PALEOPROTEROZOIC MANTLE PATAGONIA https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
New isotopic studies on mantle xenoliths from Santa Cruz Province, southern Patagonia, Argentina, reveal that at least three discrete subcontinental lithospheric mantle (SCLM) domains—the Deseado Massif, Tres Lagos, and Pali Aike—form the southernmost part of South America. Re-Os systematics yield early Paleoproterozoic (up to 2.5 Ga) SCLM formation ages (rhenium depletion ages, TRD) for Pali Aike spinel peridotites, while samples from the Deseado Massif and Tres Lagos indicate a younger SCLM origin with Neoproterozoic to Mesoproterozoic (0.9–1.3 Ga) and Mesoproterozoic to late Paleoproterozoic (1.3–1.9 Ga) TRD ages, respectively. Hf-Sr-Nd isotopic compositions indicate metasomatic overprinting of the majority of the samples, which, however, has not affected the Os isotopic system. Based on similar formation ages, the geological evolution of the Deseado Massif is most likely connected to the evolution of the Namaqua-Natal belt of South Africa. TRD ages from SCLM domains underneath Tres Lagos and Pali Aike indicate a common origin with crustal sections from Shackleton Range, Antarctica, positioning the southern tip of South America closer to west Antarctica in the reconstructed Rodinia supercontinent than previously assumed. Fil: Mundl, Andrea. University of Vienna.Department of Lithospheric Research; Austria Fil: Ntaflos, Theodoros. University of Vienna. Department of Lithospheric Research; Austria Fil: Ackerman, Lukas. Academy of Sciences of the Czech Republic; República Checa. Czech Geological Survey; República Checa Fil: Bizimis, Michael. University of South Carolina; Estados Unidos Fil: Bjerg, Ernesto Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Bahía Blanca. Instituto Geológico del Sur; Argentina. Universidad Nacional del Sur; Argentina Fil: Hauzenberger, Christoph A. University of Graz. Institute for Earth Sciences; Austria |
format |
Article in Journal/Newspaper |
author |
Mundl, Andrea Ntaflos, Theodoros Ackerman, Lukas Bizimis, Michael Bjerg, Ernesto Alfredo Hauzenberger, Christoph A. |
author_facet |
Mundl, Andrea Ntaflos, Theodoros Ackerman, Lukas Bizimis, Michael Bjerg, Ernesto Alfredo Hauzenberger, Christoph A. |
author_sort |
Mundl, Andrea |
title |
Mesoproterozoic and Paleoproterozoic subcontinental lithospheric mantle domains beneath southern Patagonia: Isotopic evidence for its connection to Africa and Antarctica |
title_short |
Mesoproterozoic and Paleoproterozoic subcontinental lithospheric mantle domains beneath southern Patagonia: Isotopic evidence for its connection to Africa and Antarctica |
title_full |
Mesoproterozoic and Paleoproterozoic subcontinental lithospheric mantle domains beneath southern Patagonia: Isotopic evidence for its connection to Africa and Antarctica |
title_fullStr |
Mesoproterozoic and Paleoproterozoic subcontinental lithospheric mantle domains beneath southern Patagonia: Isotopic evidence for its connection to Africa and Antarctica |
title_full_unstemmed |
Mesoproterozoic and Paleoproterozoic subcontinental lithospheric mantle domains beneath southern Patagonia: Isotopic evidence for its connection to Africa and Antarctica |
title_sort |
mesoproterozoic and paleoproterozoic subcontinental lithospheric mantle domains beneath southern patagonia: isotopic evidence for its connection to africa and antarctica |
publisher |
Geological Society of America |
url |
http://hdl.handle.net/11336/6492 |
long_lat |
ENVELOPE(-26.000,-26.000,-80.833,-80.833) |
geographic |
Patagonia West Antarctica Shackleton Argentina Shackleton Range |
geographic_facet |
Patagonia West Antarctica Shackleton Argentina Shackleton Range |
genre |
Antarc* Antarctica West Antarctica |
genre_facet |
Antarc* Antarctica West Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/ info:eu-repo/semantics/altIdentifier/doi/10.1130/G36344.1 info:eu-repo/semantics/altIdentifier/url/http://geology.gsapubs.org/content/43/1/39 info:eu-repo/semantics/altIdentifier/url/http://geology.geoscienceworld.org/content/43/1/39 http://hdl.handle.net/11336/6492 Mundl, Andrea; Ntaflos, Theodoros; Ackerman, Lukas; Bizimis, Michael; Bjerg, Ernesto Alfredo; et al.; Mesoproterozoic and Paleoproterozoic subcontinental lithospheric mantle domains beneath southern Patagonia: Isotopic evidence for its connection to Africa and Antarctica; Geological Society of America; Geology; 43; 1; 1-2015; 39-42 0091-7613 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
op_doi |
https://doi.org/10.1130/G36344.1 |
container_title |
Geology |
container_volume |
43 |
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1 |
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39 |
op_container_end_page |
42 |
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1779310265922224128 |