Kleinschmidt, Georg; Helferich, Stefan; Henjes-Kunst, Friedhelm; Jackson, Chris; Frimmel, Hartwig E (2011): Geochemistry and ages of rock samples from Kirwanveggen, Antarctica. PANGAEA, https://doi.org/10.1594/PANGAEA.763714, Supplement to: Kleinschmidt, G et al. (2000): The pre-Permo-Carboniferous rocks and structures from southern Kirwanveggen, Dronning Maud Land, Antarctica. Polarforschung, 66(3), 7-18, hdl:10013/epic.29761.d001
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The basement of southern Kirwanveggen (western Dronning Maud Land) is formed by a SSW-dipping section consisting of (from SW to NE): migmatic gneisses; granitoid; low-grade/prograde meta-pelites, meta-psammites and meta-basalts (= "Polaris Formation"); ortho-gneiss; quartzite mylonite; Polaris Formation; quartzite mylonite; meta-turbidites.
These units are (partly) separated by at least four SSW-dipping, NE to N directed major thrusts. Most probably, this thrust system is of Pan-African age. Towards north, the section is followed by the molasse-like Urfjell Group, deposited later than approx. 550 Ma and earlier than 450 Ma. Similarities with the Pan-African of the Shackleton Range (thrusting, molasse) led to the assumption, that the East/West Gondwana suture runs from the Shackleton Range towards Sor Rondane (eastern Dronning Maud Land) passing southern Kirwanveggen at its south-east.
Latitude: -73.500000 * Longitude: -5.660000
Datasets listed in this publication series
- Kleinschmidt, G; Helferich, S; Henjes-Kunst, F et al. (2011): Tab. 2: Age determinations in southern Kirwanveggen. https://doi.org/10.1594/PANGAEA.763713
- Kleinschmidt, G; Helferich, S; Henjes-Kunst, F et al. (2011): Tab. 1: XRF analysis on selected rocks from southern Kirwanveggen. https://doi.org/10.1594/PANGAEA.763712