Palynological evidence supporting widespread synchronicity of Early Jurassic silicic volcanism throughout the Transantarctic Basin
Throughout the Transantarctic Mountains, Early Jurassic silicic magmatism preceding the emplacement of the Ferrar flood-basalt province (Heimann et al. 1994) is documented by the increasing input of silicic ash into otherwise epiclastic, fluviolacustrine deposits of the Beacon Supergroup (see Elliot...
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crcambridgeupr:10.1017/s0954102020000346 2024-09-15T17:49:05+00:00 Palynological evidence supporting widespread synchronicity of Early Jurassic silicic volcanism throughout the Transantarctic Basin Unverfärth, Jan Mörs, Thomas Bomfleur, Benjamin 2020 http://dx.doi.org/10.1017/s0954102020000346 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102020000346 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Antarctic Science volume 32, issue 5, page 396-397 ISSN 0954-1020 1365-2079 journal-article 2020 crcambridgeupr https://doi.org/10.1017/s0954102020000346 2024-07-31T04:03:56Z Throughout the Transantarctic Mountains, Early Jurassic silicic magmatism preceding the emplacement of the Ferrar flood-basalt province (Heimann et al. 1994) is documented by the increasing input of silicic ash into otherwise epiclastic, fluviolacustrine deposits of the Beacon Supergroup (see Elliot et al. 2017). Vertebrate biostratigraphy and radiometric analyses indicate a Sinemurian to Pliensbachian age span for silicic volcaniclastic deposits in the central Transantarctic Mountains (CTMs) (Elliot et al. 2017). For northern Victoria Land (NVL), radiometric geochronology and palynostratigraphy revealed that explosive silicic volcanism began with minor pulses during the early Sinemurian ( c . 195 Ma) and reached a peak phase beginning in the middle Pliensbachian ( c . 187 Ma) (Bomfleur et al. 2014). A basin-wide correlation of these widely separated age frameworks has so far been hampered by the scarcity of data on coeval deposits in southern Victoria Land (SVL). Here, we present new palynostratigraphic data from mixed epiclastic–volcaniclastic deposits in the Prince Albert Mountains that provide supporting evidence for the widespread synchronicity of silicic volcanic episodes preceding Ferrar magmatism. Article in Journal/Newspaper Antarctic Science Victoria Land Cambridge University Press Antarctic Science 32 5 396 397 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
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English |
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Throughout the Transantarctic Mountains, Early Jurassic silicic magmatism preceding the emplacement of the Ferrar flood-basalt province (Heimann et al. 1994) is documented by the increasing input of silicic ash into otherwise epiclastic, fluviolacustrine deposits of the Beacon Supergroup (see Elliot et al. 2017). Vertebrate biostratigraphy and radiometric analyses indicate a Sinemurian to Pliensbachian age span for silicic volcaniclastic deposits in the central Transantarctic Mountains (CTMs) (Elliot et al. 2017). For northern Victoria Land (NVL), radiometric geochronology and palynostratigraphy revealed that explosive silicic volcanism began with minor pulses during the early Sinemurian ( c . 195 Ma) and reached a peak phase beginning in the middle Pliensbachian ( c . 187 Ma) (Bomfleur et al. 2014). A basin-wide correlation of these widely separated age frameworks has so far been hampered by the scarcity of data on coeval deposits in southern Victoria Land (SVL). Here, we present new palynostratigraphic data from mixed epiclastic–volcaniclastic deposits in the Prince Albert Mountains that provide supporting evidence for the widespread synchronicity of silicic volcanic episodes preceding Ferrar magmatism. |
format |
Article in Journal/Newspaper |
author |
Unverfärth, Jan Mörs, Thomas Bomfleur, Benjamin |
spellingShingle |
Unverfärth, Jan Mörs, Thomas Bomfleur, Benjamin Palynological evidence supporting widespread synchronicity of Early Jurassic silicic volcanism throughout the Transantarctic Basin |
author_facet |
Unverfärth, Jan Mörs, Thomas Bomfleur, Benjamin |
author_sort |
Unverfärth, Jan |
title |
Palynological evidence supporting widespread synchronicity of Early Jurassic silicic volcanism throughout the Transantarctic Basin |
title_short |
Palynological evidence supporting widespread synchronicity of Early Jurassic silicic volcanism throughout the Transantarctic Basin |
title_full |
Palynological evidence supporting widespread synchronicity of Early Jurassic silicic volcanism throughout the Transantarctic Basin |
title_fullStr |
Palynological evidence supporting widespread synchronicity of Early Jurassic silicic volcanism throughout the Transantarctic Basin |
title_full_unstemmed |
Palynological evidence supporting widespread synchronicity of Early Jurassic silicic volcanism throughout the Transantarctic Basin |
title_sort |
palynological evidence supporting widespread synchronicity of early jurassic silicic volcanism throughout the transantarctic basin |
publisher |
Cambridge University Press (CUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1017/s0954102020000346 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102020000346 |
genre |
Antarctic Science Victoria Land |
genre_facet |
Antarctic Science Victoria Land |
op_source |
Antarctic Science volume 32, issue 5, page 396-397 ISSN 0954-1020 1365-2079 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/s0954102020000346 |
container_title |
Antarctic Science |
container_volume |
32 |
container_issue |
5 |
container_start_page |
396 |
op_container_end_page |
397 |
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1810290775971332096 |