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Grootpenseiland Complex, Karasburg West, ǁKaras Region, Namibiai
Regional Level Types
Grootpenseiland ComplexComplex
Karasburg WestConstituency
ǁKaras RegionRegion
NamibiaCountry

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Latitude & Longitude (WGS84):
28° South , 18° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~82km
GRN:
S19E12
Type:
Complex
Age:
529 ± 24 Ma
Geologic Time:
Terreneuvian
Dating method:
Rb-Sr whole rock
Reference for age:
Smithies, R. H., & Marsh, J. S. (1996). Alkaline rocks in the Kuboos-Bremen Igneous Province, southern Namibia: the Grootpenseiland and Marinkas Kwela Complexes. Communications of the Geological Survey of Namibia, 11, 13-20. http://www.mme.gov.na/files/publications/2a2_Smithies%20and%20Marsh_Grootpenseiland_Marinkas%20Kwela.pdf
Köppen climate type:
BWh : Hot deserts climate
Mindat Locality ID:
408382
Long-form identifier:
mindat:1:2:408382:8
GUID (UUID V4):
0


Grootpenseiland and Marinkas Kwela, Karasburg West, ǁKaras Region, Namibia are 2 complexes which are in contact and define a NE-SW-trending 14 km long line which appears to end at the Orange River (Smithies & Marsh 1996).

Grootpenseiland is a smaller complex in the SW, varies from nepheline syenite in the SW through syenite to a granite stock in the NE.

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

AfricaContinent
African PlateTectonic Plate

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References

Bernasconi, A. (1981). The marinkas kwela alkali-granite intrusive, a probable porphyry molybdenum system of cambrian age, namibia. Mineralium Deposita, 16(3), 447-454. doi.org/10.1007%252FBF01798969
Bernasconi, A. (1986). The Marinkas kwela alkali intrusive: A porphyry molybdenum system of Cambrian age in Southern South West Africa/Namibia. In Mineral Deposits of Southern Africa (pp. 1587-1591).
Smithies, R. H., Marsh, J. S. (1996) Alkaline rocks in the Kuboos-Bremen Igneous Province, southern Namibia: the Grootpenseiland and Marinkas Kwela Complexes. Communications of the Geological Survey of Namibia, 11. 13-20
Woolley, A. R. (2001) Alkaline Rocks and Carbonatites of the World, Part 3: Africa - Alkaline Rocks and Carbonatites of the World. The Geological Society of London.p.218
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