Cretaceous arc volcanism of Byers Peninsula, Livingston Island, Antarctica : new petrological, geochemical and isotope data
International audience
| Main Authors: | , , , |
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| Other Authors: | , , , , , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
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HAL CCSD
2004
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| Online Access: | https://hal.science/hal-02009163 |
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ftunivsavoie:oai:HAL:hal-02009163v1 |
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openpolar |
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Open Polar |
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Université Savoie Mont Blanc: HAL |
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ftunivsavoie |
| language |
English |
| topic |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.PE]Sciences of the Universe [physics]/Earth Sciences/Petrography [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
| spellingShingle |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.PE]Sciences of the Universe [physics]/Earth Sciences/Petrography [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Demant*, Alain Touron, Stéphanie Lapierre, Henriette Bosch, Delphine Cretaceous arc volcanism of Byers Peninsula, Livingston Island, Antarctica : new petrological, geochemical and isotope data |
| topic_facet |
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.PE]Sciences of the Universe [physics]/Earth Sciences/Petrography [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
| description |
International audience |
| author2 |
Laboratoire de recherche des monuments historiques (LRMH) Centre de Recherche sur la Conservation (CRC ) Muséum national d'Histoire naturelle (MNHN)-Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Géodynamique des Chaines Alpines (LGCA) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Tectonophysique (Tectonophysique) Université Montpellier 2 - Sciences et Techniques (UM2)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| format |
Article in Journal/Newspaper |
| author |
Demant*, Alain Touron, Stéphanie Lapierre, Henriette Bosch, Delphine |
| author_facet |
Demant*, Alain Touron, Stéphanie Lapierre, Henriette Bosch, Delphine |
| author_sort |
Demant*, Alain |
| title |
Cretaceous arc volcanism of Byers Peninsula, Livingston Island, Antarctica : new petrological, geochemical and isotope data |
| title_short |
Cretaceous arc volcanism of Byers Peninsula, Livingston Island, Antarctica : new petrological, geochemical and isotope data |
| title_full |
Cretaceous arc volcanism of Byers Peninsula, Livingston Island, Antarctica : new petrological, geochemical and isotope data |
| title_fullStr |
Cretaceous arc volcanism of Byers Peninsula, Livingston Island, Antarctica : new petrological, geochemical and isotope data |
| title_full_unstemmed |
Cretaceous arc volcanism of Byers Peninsula, Livingston Island, Antarctica : new petrological, geochemical and isotope data |
| title_sort |
cretaceous arc volcanism of byers peninsula, livingston island, antarctica : new petrological, geochemical and isotope data |
| publisher |
HAL CCSD |
| publishDate |
2004 |
| url |
https://hal.science/hal-02009163 |
| long_lat |
ENVELOPE(-60.283,-60.283,-63.900,-63.900) ENVELOPE(-61.066,-61.066,-62.633,-62.633) ENVELOPE(-60.500,-60.500,-62.600,-62.600) |
| geographic |
Byers Byers peninsula Livingston Island South Shetland Islands |
| geographic_facet |
Byers Byers peninsula Livingston Island South Shetland Islands |
| genre |
Antarc* Antarctica Livingston Island South Shetland Islands |
| genre_facet |
Antarc* Antarctica Livingston Island South Shetland Islands |
| op_source |
ISSN: 0037-9409 EISSN: 1777-5817 Bulletin de la Société Géologique de France https://hal.science/hal-02009163 Bulletin de la Société Géologique de France, 2004, 175 (2), pp.131-145 |
| op_relation |
hal-02009163 https://hal.science/hal-02009163 |
| _version_ |
1802651663385755648 |
| spelling |
ftunivsavoie:oai:HAL:hal-02009163v1 2024-06-23T07:47:32+00:00 Cretaceous arc volcanism of Byers Peninsula, Livingston Island, Antarctica : new petrological, geochemical and isotope data On Byers Peninsula, the largest summer ice-free area in the South Shetland Islands, a thick Upper Jurassic-Lower Cretaceous sedimentary sequence and penecontemporaneous igneous activity records the progressive emersion of a volcanic arc. The oldest rocks are represented by voluminous basaltic flows intercalated within late Jurassic shallow marine sediments. Following the emersion, Lower Cretaceous strata were deposited. Welded and nonwelded dacitic to rhyolitic ignimbrites are exposed locally at the base of the continental succession. However, the majority of the Outcrops consists of Lower Cretaceous basaltic to basaltic andesite plugs and dykes, representing the roots of a volcanic arc, which form most of the topographic highs of the peninsula. Byers Peninsula lavas are porphyritic with mineralogical associations typical of orogenic series. Major, trace and rare-earth element data show that all the rocks are relatively poor in K2O, enriched in large ion lithophile elements and that they have a clear subduction imprint (Nb-Ta anomaly). Furthermore, a tholeiitic tendency is shown by the REE patterns of some basaltic lavas. Sr- Nd- and Pb isotopic data support an origin from the sub-arc asthenosphere. Byers lavas have isotope signatures similar to that of the South Sandwich intra-oceanic arc. The enriched nature of most of the samples, revealed by Pb isotope ratios and Th/Yb enrichment, indicates that the MORB-like mantle source has been modified by fluids and sediments derived from the subducting slab. No clear temporal chemical change is observed during the evolution of this near-trench volcanic arc. Demant*, Alain Touron, Stéphanie Lapierre, Henriette Bosch, Delphine Laboratoire de recherche des monuments historiques (LRMH) Centre de Recherche sur la Conservation (CRC ) Muséum national d'Histoire naturelle (MNHN)-Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Géodynamique des Chaines Alpines (LGCA) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Tectonophysique (Tectonophysique) Université Montpellier 2 - Sciences et Techniques (UM2)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 2004-03-01 https://hal.science/hal-02009163 en eng HAL CCSD Société géologique de France - EDP Sciences hal-02009163 https://hal.science/hal-02009163 ISSN: 0037-9409 EISSN: 1777-5817 Bulletin de la Société Géologique de France https://hal.science/hal-02009163 Bulletin de la Société Géologique de France, 2004, 175 (2), pp.131-145 [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.PE]Sciences of the Universe [physics]/Earth Sciences/Petrography [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2004 ftunivsavoie 2024-06-10T23:56:05Z International audience Article in Journal/Newspaper Antarc* Antarctica Livingston Island South Shetland Islands Université Savoie Mont Blanc: HAL Byers ENVELOPE(-60.283,-60.283,-63.900,-63.900) Byers peninsula ENVELOPE(-61.066,-61.066,-62.633,-62.633) Livingston Island ENVELOPE(-60.500,-60.500,-62.600,-62.600) South Shetland Islands |