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Fioretti, A M; Lanza, R (2000): Chemical analysis of various geological samples from Northern Victoria Land, Antarctica [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.548525, Supplement to: Fioretti, AM; Lanza, R (2000): Preliminary palaeomagnetic results from the Devono-Carboniferous Admiralty intrusives (Northern Victoria Land, Antarctica). Terra Antartica, 7(5), 657-664, hdl:10013/epic.28242.d001

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Published: 2000 (exact date unknown) • DOI registered: 2006-12-25

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Abstract:
This paper reports the results of a preliminary palaeomagnetic investigation of the Admiralty Intrusives complex of northern Victoria Land, Antarctica. The samples were collected at Mt. Supernal and Inferno Peak, two pinions mainly formed of granodiorite and minor tonalite and emplaced at ab. 350 Ma at a high crustal level, as shown by amphibole geobarometric data and occurrence of miarolitic cavities. Microprobe and isothermal remanence analyses showed that magnetite. characterized by low coercivity and Curic point in the range 550-570 °C is the only primary ferromagnetic mineral. Stepwise thermaldemagnetization succeeded in isolatingamagnetization component. stable up to 530 °C.
The virtual geomagnetic poles (VGPs) of the two plutons are different. That of Inferno Peak is consistent with the Australian palaeopoles of late Devonian-early Carboniferous age, whereas the location of the Mt. Supernal VGP probably results from the tectonic activity which affected the Ross Sea region during the Cenozoic.
Project(s):
Cape Roberts Project (CRP)
Coverage:
Median Latitude: -72.591667 * Median Longitude: 165.841667 * South-bound Latitude: -73.066667 * West-bound Longitude: 165.700000 * North-bound Latitude: -72.116667 * East-bound Longitude: 165.983333
Event(s):
Inferno_Peak * Latitude: -72.116667 * Longitude: 165.983333 * Location: Inferno Peak, Victoria Land, Antarctica * Method/Device: Geological sample (GEOS)
Mt_Supernal * Latitude: -73.066667 * Longitude: 165.700000 * Location: Mount Supernal, Victoria Land, Antarctica * Method/Device: Geological sample (GEOS)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
6 datasets

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Datasets listed in this publication series

  1. Fioretti, AM; Lanza, R (2000): Bulk chemical composition of samples of the Admiralty Intrusive complex from Inferno Peak, northern Victoria Land, Antarctica (Table 1). https://doi.org/10.1594/PANGAEA.545240
  2. Fioretti, AM; Lanza, R (2000): Chemical composition of green hornblende crystals from samples of the Admiralty Intrusive complex from Inferno Peak, northern Victoria Land, Antarctica (Table 3). https://doi.org/10.1594/PANGAEA.547962
  3. Fioretti, AM; Lanza, R (2000): Microprobe analyses of opaque minerals in samples of the Admiralty Intrusive complex from Inferno Peak, northern Victoria Land, Antarctica (Table 1). https://doi.org/10.1594/PANGAEA.545238
  4. Fioretti, AM; Lanza, R (2000): Bulk chemical composition of samples of the Admiralty Intrusive complex from Mt. Supernal, northern Victoria Land, Antarctica (Table 1). https://doi.org/10.1594/PANGAEA.545241
  5. Fioretti, AM; Lanza, R (2000): Chemical composition of green hornblende crystals from samples of the Admiralty Intrusive complex from Mt. Supernal, northern Victoria Land, Antarctica (Table 3). https://doi.org/10.1594/PANGAEA.547963
  6. Fioretti, AM; Lanza, R (2000): Microprobe analyses of opaque minerals in samples of the Admiralty Intrusive complex from Mt. Supernal, northern Victoria Land, Antarctica (Table 1). https://doi.org/10.1594/PANGAEA.545239