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Spaeth, Gerhard; Schüll, P (1987): Tab. 2: Average geochemical composition of dolerites from Neuschwabenland. PANGAEA,, Supplement to: Spaeth, G; 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

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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
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 InvestigatorMethod/DeviceComment
1Event labelEvent
2--Spaeth, Gerhard
3Loss on ignitionLOI%Spaeth, GerhardX-ray fluorescence (XRF)
4Silicon dioxideSiO2%Spaeth, GerhardX-ray fluorescence (XRF)
5Aluminium oxideAl2O3%Spaeth, GerhardX-ray fluorescence (XRF)
6Calcium oxideCaO%Spaeth, GerhardX-ray fluorescence (XRF)
7Magnesium oxideMgO%Spaeth, GerhardX-ray fluorescence (XRF)
8Sodium oxideNa2O%Spaeth, GerhardX-ray fluorescence (XRF)
9Potassium oxideK2O%Spaeth, GerhardX-ray fluorescence (XRF)
10Titanium dioxideTiO2%Spaeth, GerhardX-ray fluorescence (XRF)
11Iron oxide, Fe2O3Fe2O3%Spaeth, GerhardX-ray fluorescence (XRF)as whole iron
12Manganese oxideMnO%Spaeth, GerhardX-ray fluorescence (XRF)
13Phosphorus pentoxideP2O5%Spaeth, GerhardX-ray fluorescence (XRF)
14BariumBamg/kgSpaeth, GerhardX-ray fluorescence (XRF)
15StrontiumSrmg/kgSpaeth, GerhardX-ray fluorescence (XRF)
16RubidiumRbmg/kgSpaeth, GerhardX-ray fluorescence (XRF)
17ZirconiumZrmg/kgSpaeth, GerhardX-ray fluorescence (XRF)
18YttriumYmg/kgSpaeth, GerhardX-ray fluorescence (XRF)
19VanadiumVmg/kgSpaeth, GerhardX-ray fluorescence (XRF)
20ChromiumCrmg/kgSpaeth, GerhardX-ray fluorescence (XRF)
21ZincZnmg/kgSpaeth, GerhardX-ray fluorescence (XRF)
22NickelNimg/kgSpaeth, GerhardX-ray fluorescence (XRF)
23CobaltComg/kgSpaeth, GerhardX-ray fluorescence (XRF)
24Potassium/Rubidium ratioK/RbSpaeth, GerhardCalculated
25Potassium/Barium ratioK/BaSpaeth, Gerhard
216 data points

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