Mid-Jurassic age for the Botany Bay Group: implications for Weddell Sea Basin creation and southern hemisphere biostratigraphy

• Published in: Journal of the Geological Society
• Main Authors: Hunter, Morag A., Cantrill, David J., Flowerdew, Michael J., Millar, Ian L.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Geological Society of London 2005
• Subjects: Earth Sciences; Antarctic; Antarctic Peninsula; Botany Bay; Latady; The Antarctic; Weddell; Weddell Sea; Antarc*
• Online Access: http://nora.nerc.ac.uk/id/eprint/1818/

New U–Pb zircon ion-microprobe ages from the alluvial conglomerates and flood plain sediments of the Botany Bay Group demonstrate that sedimentation occurred at c. 167 Ma, coeval with rift-related silicic volcanism in the northern Antarctic Peninsula. In contrast, rift-related volcanism and sediment...