New Rb-Sr mineral ages temporally link plume events with accretion at the margin of Gondwana.

• Published in: New Rb-Sr Mineral Ages Temporally Link Plume Events with Accretion at the Margin of Gondwana
• Main Authors: Flowerdew, M.J., Daly, J. S., Riley, T.R.
• Other Authors: Cooper, A.K., Raymond, C.R., ISAES Editorial Team, .
• Format: Book Part
• Language: English
• Published: U.S. Geological Survey and National Academies Press 2007
• Subjects: Earth Sciences; West Antarctica; South Orkney Islands; Antarc*; Antarctica
• Online Access: http://nora.nerc.ac.uk/id/eprint/4502/; https://nora.nerc.ac.uk/id/eprint/4502/1/Flowerdew_et_al_2007_South_Orkney_RbSr.pdf; http://pubs.usgs.gov/of/2007/1047/srp/srp012/of2007-1047srp012.pdf; https://doi.org/10.3133/of2007-1047.srp012

Five of six Rb-Sr muscovite mineral isochron ages from the Scotia Metamorphic Complex of the South Orkney Islands, West Antarctica, average 190 ± 4 Ma. The muscovite ages are interpreted to date foliation-formation and thus also accretion and subduction at the Gondwana margin. Coincident picrite and...