Smithian and Spathian (Early Triassic) ammonoid assemblages from terranes: paleoceanographic and paleogeographic implications.
14 pages International audience Early Triassic paleobiogeography is characterised by the stable supercontinental assembly of Pangea. However, at that time, several terranes such as the South Kitakami Massif (SK), South Primorye (SP) and Chulitna (respectively, and presently located in Japan, eastern...
Published in: | Journal of Asian Earth Sciences |
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Main Authors: | , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2009
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Online Access: | https://hal.science/hal-00413667 https://doi.org/10.1016/j.jseaes.2008.05.004 |
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ftunivnantes:oai:HAL:hal-00413667v1 |
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openpolar |
institution |
Open Polar |
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Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Early Triassic Ammonoids Biotic recovery Terranes Chulitna South Primorye South Kitakami Biogeography Paleoceanography [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
spellingShingle |
Early Triassic Ammonoids Biotic recovery Terranes Chulitna South Primorye South Kitakami Biogeography Paleoceanography [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology Brayard, Arnaud Escarguel, Gilles Bucher, Hugo Brühwiler, Thomas Smithian and Spathian (Early Triassic) ammonoid assemblages from terranes: paleoceanographic and paleogeographic implications. |
topic_facet |
Early Triassic Ammonoids Biotic recovery Terranes Chulitna South Primorye South Kitakami Biogeography Paleoceanography [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
description |
14 pages International audience Early Triassic paleobiogeography is characterised by the stable supercontinental assembly of Pangea. However, at that time, several terranes such as the South Kitakami Massif (SK), South Primorye (SP) and Chulitna (respectively, and presently located in Japan, eastern Russia and Alaska) straddled the vast oceans surrounding Pangea. By means of quantitative biogeographical methods including Cluster Analysis, Non-metric Multidimensional Scaling and Bootstrapped Spanning Network applied to Smithian and Spathian (Early Triassic) ammonoid assemblages; we analyze similarity relationships between faunas and suggest paleopositions for the above-cited terranes. Taxonomic similarities between faunas indicate that primary drivers of the ammonoid distribution were Sea Surface Temperature and currents. Possible connections due to current-controlled faunal exchanges between both sides of the Panthalassa are shown and terranes such as SK, SP and Chulitna played an important role as stepping stones in the dispersal of ammonoids. SK and SP terranes show strong subequatorial affinities during the Smithian, thus suggesting a location close to South China. At the same time, the Chulitna terrane shows strong affinities with equatorial faunas of the eastern Panthalassa. This paleoceanographic pattern was markedly altered during the Spathian, possibly indicating significant modifications of oceanic circulation at that time, as illustrated by the development of a marked intertropical faunal belt across Tethys and Panthalassa. |
author2 |
Laboratoire des Mécanismes et Transfert en Géologie (LMTG) Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) PaleoEnvironnements et PaleobioSphere (PEPS) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Paläontologisches Institut und Museum Universität Zürich Zürich = University of Zurich (UZH) Department of Earth Sciences Swiss Federal Institute of Technology - ETH Zürich (D-ERDW) Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich) Work supported by the Swiss NSF project 200020-113554. |
format |
Article in Journal/Newspaper |
author |
Brayard, Arnaud Escarguel, Gilles Bucher, Hugo Brühwiler, Thomas |
author_facet |
Brayard, Arnaud Escarguel, Gilles Bucher, Hugo Brühwiler, Thomas |
author_sort |
Brayard, Arnaud |
title |
Smithian and Spathian (Early Triassic) ammonoid assemblages from terranes: paleoceanographic and paleogeographic implications. |
title_short |
Smithian and Spathian (Early Triassic) ammonoid assemblages from terranes: paleoceanographic and paleogeographic implications. |
title_full |
Smithian and Spathian (Early Triassic) ammonoid assemblages from terranes: paleoceanographic and paleogeographic implications. |
title_fullStr |
Smithian and Spathian (Early Triassic) ammonoid assemblages from terranes: paleoceanographic and paleogeographic implications. |
title_full_unstemmed |
Smithian and Spathian (Early Triassic) ammonoid assemblages from terranes: paleoceanographic and paleogeographic implications. |
title_sort |
smithian and spathian (early triassic) ammonoid assemblages from terranes: paleoceanographic and paleogeographic implications. |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.science/hal-00413667 https://doi.org/10.1016/j.jseaes.2008.05.004 |
long_lat |
ENVELOPE(-63.992,-63.992,-64.786,-64.786) |
geographic |
Stepping Stones |
geographic_facet |
Stepping Stones |
genre |
Alaska Stepping Stones |
genre_facet |
Alaska Stepping Stones |
op_source |
ISSN: 0743-9547 Journal of Southeast Asian earth sciences https://hal.science/hal-00413667 Journal of Southeast Asian earth sciences, 2009, 36 (6), pp.420-433. ⟨10.1016/j.jseaes.2008.05.004⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jseaes.2008.05.004 hal-00413667 https://hal.science/hal-00413667 doi:10.1016/j.jseaes.2008.05.004 |
op_doi |
https://doi.org/10.1016/j.jseaes.2008.05.004 |
container_title |
Journal of Asian Earth Sciences |
container_volume |
36 |
container_issue |
6 |
container_start_page |
420 |
op_container_end_page |
433 |
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1766242401542733824 |
spelling |
ftunivnantes:oai:HAL:hal-00413667v1 2023-05-15T18:48:59+02:00 Smithian and Spathian (Early Triassic) ammonoid assemblages from terranes: paleoceanographic and paleogeographic implications. Brayard, Arnaud Escarguel, Gilles Bucher, Hugo Brühwiler, Thomas Laboratoire des Mécanismes et Transfert en Géologie (LMTG) Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) PaleoEnvironnements et PaleobioSphere (PEPS) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Paläontologisches Institut und Museum Universität Zürich Zürich = University of Zurich (UZH) Department of Earth Sciences Swiss Federal Institute of Technology - ETH Zürich (D-ERDW) Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich) Work supported by the Swiss NSF project 200020-113554. 2009 https://hal.science/hal-00413667 https://doi.org/10.1016/j.jseaes.2008.05.004 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jseaes.2008.05.004 hal-00413667 https://hal.science/hal-00413667 doi:10.1016/j.jseaes.2008.05.004 ISSN: 0743-9547 Journal of Southeast Asian earth sciences https://hal.science/hal-00413667 Journal of Southeast Asian earth sciences, 2009, 36 (6), pp.420-433. ⟨10.1016/j.jseaes.2008.05.004⟩ Early Triassic Ammonoids Biotic recovery Terranes Chulitna South Primorye South Kitakami Biogeography Paleoceanography [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology info:eu-repo/semantics/article Journal articles 2009 ftunivnantes https://doi.org/10.1016/j.jseaes.2008.05.004 2023-02-22T00:32:38Z 14 pages International audience Early Triassic paleobiogeography is characterised by the stable supercontinental assembly of Pangea. However, at that time, several terranes such as the South Kitakami Massif (SK), South Primorye (SP) and Chulitna (respectively, and presently located in Japan, eastern Russia and Alaska) straddled the vast oceans surrounding Pangea. By means of quantitative biogeographical methods including Cluster Analysis, Non-metric Multidimensional Scaling and Bootstrapped Spanning Network applied to Smithian and Spathian (Early Triassic) ammonoid assemblages; we analyze similarity relationships between faunas and suggest paleopositions for the above-cited terranes. Taxonomic similarities between faunas indicate that primary drivers of the ammonoid distribution were Sea Surface Temperature and currents. Possible connections due to current-controlled faunal exchanges between both sides of the Panthalassa are shown and terranes such as SK, SP and Chulitna played an important role as stepping stones in the dispersal of ammonoids. SK and SP terranes show strong subequatorial affinities during the Smithian, thus suggesting a location close to South China. At the same time, the Chulitna terrane shows strong affinities with equatorial faunas of the eastern Panthalassa. This paleoceanographic pattern was markedly altered during the Spathian, possibly indicating significant modifications of oceanic circulation at that time, as illustrated by the development of a marked intertropical faunal belt across Tethys and Panthalassa. Article in Journal/Newspaper Alaska Stepping Stones Université de Nantes: HAL-UNIV-NANTES Stepping Stones ENVELOPE(-63.992,-63.992,-64.786,-64.786) Journal of Asian Earth Sciences 36 6 420 433 |