Mafic Dykes from Heimefrontfjella and implications for the post-Grenvillian to pre-Pan-African geological evolution of western Dronning Maud Land, Antarctica

• Published in: Antarctic Science
• Main Authors: Bauer, Wolfgang, Fielitz, W., Jacobs, Jeffrey Bruce, Fanning, Christopher, Spaeth, G
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: British Antarctic Survey
• Subjects: Keywords: dike swarm; geochemistry; mafic rock; mid-ocean ridge basalt; Proterozoic; SHRIMP dating; tholeiite; Antarctica; Laurentia Geochemistry; Maud Belt; Tholeiitic dykes; U-Pb zircon SHRIMP data; Dronning Maud Land; Heimefrontfjella; Grunehogna; Antarc*; Antarctic Science
• Online Access: http://hdl.handle.net/1885/88651; https://doi.org/10.1017/S0954102003001391

Two groups of geochemical different dykes have been identified in the Grenville-aged basement of Heimefrontfjella. The first group comprises dykes of continental tholeiite composition which probably intruded during the final stage of indentation of the Kaapvaal-Grunehogna Craton into Laurentia. One...