Articles | Volume 35, issue 6
https://doi.org/10.5194/ejm-35-969-2023
https://doi.org/10.5194/ejm-35-969-2023
Research article
 | 
14 Nov 2023
Research article |  | 14 Nov 2023

Symplectite and kelyphite formation during decompression of mafic granulite from Gjelsvikfjella, central Dronning Maud Land, Antarctica

Synnøve Elvevold, Joachim Jacobs, Leif-Erik Rydland Pedersen, Øyvind Sunde, Ane K. Engvik, and Per Inge Myhre

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Cited articles

Anderson, E. D. and Moecher, D. P.: Omphacite breakdown reactions and relation to eclogite exhumation rates, Contrib. Mineral. Petr., 154, 253–277, https://doi.org/10.1007/s00410-007-0192-x, 2007. 
Austrheim, H., Putnis, C. V., Engvik, A. K., and Putnis, A.: Zircon coronas around Fe–Ti oxides: a physical reference frame for metamorphic and metasomatic reactions, Contrib. Mineral. Petr., 156, 517–527, https://doi.org/10.1007/s00410-008-0299-8, 2008. 
Baba, S., Hokada, T., Kaiden, H., Dunkley, D. J., Owada, M., and Shiraishi, K.: SHRIMP zircon U-Pb dating of sapphirine-bearing granulite and biotite hornblende gneiss in the Schirmacher Hills, east Antarctica: implications for Neoproterozoic ultrahigh-temperature metamorphism predating the assembly of Gondwana, J. Geol., 118, 621–39, 2010. 
Baba, S., Horie, K., Hokada, T., Owada, M., Adachi, T., and Shiraishi, K.: Multiple collisions in the East African-Antarctic Orogen: Constraints from timing of metamorphism in the Filchnerfjella and Hochlinfjellet terranes in central Dronning Maud Land, J. Geol., 123, 55–78, 2015. 
Baldwin, S. L.: Highlights and breakthroughs. Zircon dissolution and growth during metamorphism, Am. Mineral., 100, 1019–1020, https://doi.org/10.2138/am-2015-5279, 2015. 
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Short summary
The present study of mafic rocks from Jutulsessen, Gjelsvikfjella, extends the presence of high-pressure rocks in the Maud Belt in Dronning Maud Land, Antarctica. The physical conditions necessary for the development of these rocks were attained during continent–continent collision along the East African–Antarctic Orogen. The new data in this study largely confirm the geodynamic implication outlined by others for the region.