Data Description

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Spaeth, G; Schüll, P (1987): Tab. 2: Average geochemical composition of dolerites from Neuschwabenland. doi:10.1594/PANGAEA.761606,
Supplement to: Spaeth, Gerhard; Schüll, P (1987): A survey of mesozoic dolerite dikes from western Neuschwabenland, Antarctica, and their geotectonic significance. Polarforschung, 57(1/2), 93-113, hdl:10013/epic.29585.d001
In western Neuschwabenland basic dikes occur in the Jurassic lavas and Permian sediments of Vestfjella as weil as in the Precambrian sedimentary-volcanogenic rock sequence of the Ahlmannryggen and in the Precambrian crystalline complexes of Heimefrontfjella and Mannefallknausane. The concentration of the dikes in Vestfjella is conspicuous. Two main directions of strike perpendicular to each other are recognizable, from which the NE-SW striking one is predominant. The direction of the dikes coincides with the Mesozoic and younger fracture tectonics. Age relationships by structural, petrographical and geochemical observations are confirmed by palaeomagnetic and radiometrie age determinations from PETERS et al. (1986). Considerations on the geochemistry of further dolerite occurrences from Antarctica and other regions of the Gondwana continent are pointed out. Finally comparisons with the analogous South African dike system show the geotectonic significance of the dolerite dikes for the break-up of Gondwana.
Median Latitude: -73.233333 * Median Longitude: -9.000000 * South-bound Latitude: -75.000000 * West-bound Longitude: -15.000000 * North-bound Latitude: -71.700000 * East-bound Longitude: -1.000000
Ahlmannryggen * * Latitude Start: -72.000000 * Longitude Start: -3.000000 * Latitude End: -71.700000 * Longitude End: -1.000000 * Location: Ahlmannryggen, Neuschwabenland, Antarctica *
Heimefrontfjella * * Latitude Start: -74.200000 * Longitude Start: -13.000000 * Latitude End: -75.000000 * Longitude End: -9.000000 * Location: Heimefrontfjella, Antarctica * * Device: Geological mapping (GEOMAP) *
Vestfjella * * Latitude Start: -73.000000 * Longitude Start: -15.000000 * Latitude End: -73.500000 * Longitude End: -13.000000 * Location: Vestfjella, Kraul Mountains, Neuschwabenland, Antarctica *
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event label *Event
2- *-Spaeth, Gerhard *
3Loss on ignition *LOI%Spaeth, Gerhard *X-ray fluorescence (XRF) *
4Silicon dioxide *SiO2%Spaeth, Gerhard *X-ray fluorescence (XRF) *
5Aluminium oxide *Al2O3%Spaeth, Gerhard *X-ray fluorescence (XRF) *
6Calcium oxide *CaO%Spaeth, Gerhard *X-ray fluorescence (XRF) *
7Magnesium oxide *MgO%Spaeth, Gerhard *X-ray fluorescence (XRF) *
8Sodium oxide *Na2O%Spaeth, Gerhard *X-ray fluorescence (XRF) *
9Potassium oxide *K2O%Spaeth, Gerhard *X-ray fluorescence (XRF) *
10Titanium oxide *TiO2%Spaeth, Gerhard *X-ray fluorescence (XRF) *
11Iron oxide, Fe2O3 *Fe2O3%Spaeth, Gerhard *X-ray fluorescence (XRF) *as whole iron
12Manganese oxide *MnO%Spaeth, Gerhard *X-ray fluorescence (XRF) *
13Phosphorus oxide *P2O5%Spaeth, Gerhard *X-ray fluorescence (XRF) *
14Barium *Bamg/kgSpaeth, Gerhard *X-ray fluorescence (XRF) *
15Strontium *Srmg/kgSpaeth, Gerhard *X-ray fluorescence (XRF) *
16Rubidium *Rbmg/kgSpaeth, Gerhard *X-ray fluorescence (XRF) *
17Zirconium *Zrmg/kgSpaeth, Gerhard *X-ray fluorescence (XRF) *
18Yttrium *Ymg/kgSpaeth, Gerhard *X-ray fluorescence (XRF) *
19Vanadium *Vmg/kgSpaeth, Gerhard *X-ray fluorescence (XRF) *
20Chromium *Crmg/kgSpaeth, Gerhard *X-ray fluorescence (XRF) *
21Zinc *Znmg/kgSpaeth, Gerhard *X-ray fluorescence (XRF) *
22Nickel *Nimg/kgSpaeth, Gerhard *X-ray fluorescence (XRF) *
23Cobalt *Comg/kgSpaeth, Gerhard *X-ray fluorescence (XRF) *
24Potassium/Rubidium ratio *K/RbSpaeth, Gerhard *Calculated *
25Potassium/Barium ratio *K/BaSpaeth, Gerhard *
216 data points

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