| Titre | Age and geochemistry of the boucaut volcanics in the neoproterozoic Adelaide rift complex, South Australia |
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| Auteur | Armistead, S E ;
Collins, A S; Buckman, S; Atkins, R |
| Source | Australian Journal of Earth Sciences 2020 p. 1-10, https://doi.org/10.1080/08120099.2021.1840435  Accès ouvert |
| Image |  |
| Année | 2020 |
| Séries alt. | Ressources naturelles Canada, Contribution externe 20200589 |
| Éditeur | Taylor & Francis Ltd. |
| Document | publication en série |
| Lang. | anglais |
| DOI | https://doi.org/10.1080/08120099.2021.1840435 |
| Media | papier; en ligne; numérique |
| Formats | pdf |
| Région | Adelaide |
| Lat/Long OENS | 137.0000 141.0000 -30.5000 -35.5000 |
| Sujets | processus volcanogènes; Rodinie; géochimie; géochronologie; Sciences et technologie; Protérozoïque |
| Illustrations | cartes de localisation; diagrammes; tableaux; graphiques |
| Diffusé | 2020 11 18 |
| Résumé | (disponible en anglais seulement)
The Adelaide Rift Complex in South Australia records the break-up of Rodinia at a time of great climatic and biological evolution. The Boucaut Volcanics within
the Neoproterozoic Adelaide Rift Complex of the Adelaide Superbasin lie at the base of the Burra Group, marking the boundary between the Burra Group and underlying Callanna Group. Despite their significance as one of the few volcanic units within the
rift complex, there has been no robust age determination published for the Boucaut Volcanics. We use U–Pb zircon LA-ICP-MS data to determine an age of 788?±?6?Ma for the eruption of the bimodal Boucaut Volcanics. This has important implications for
constraining the timing of stratigraphy within the Adelaide Superbasin. This also has far-reaching implications for plate tectonic reconstructions of Australia and Laurentia, and for correlating global isotope anomalies for the
Neoproterozoic. |
| GEOSCAN ID | 327845 |
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