| The
Regional Geoscience Division is responsible for conducting geological
mapping and the production of geological map data, which are available
both in digital and hardcopy format. Details of available maps and
digital data are given in the downloadable catalogue.
The Regional Geoscience Division Subdivisions:
The
Regional Geoscience Division has three subdivisions:
Tectonics,
which deals with the structurally deformed and metamorphosed Proterozoic
geology
Stratigraphy,
which deals with the largely undeformed Phanerozoic geology
GIS & Remote Sensing, whose
task it is to convert field and archival map data into digital format,
assess and compile information from various sources to produce digital
maps, and employ such remote sensing techniques as are available
to improve existing field data.
However, final implementation of this structure awaits the funding
and filling of additional posts; at present many of the above tasks
are shared among the subdivisions.
Geological maps and data available
The 1:1 000 000 Geological Map of Namibia, which was first published
in 1965 and edited in 1980, covers the entire country, while the
compilation of 1:250 000 scale maps is still ongoing. At present
twenty-five out of forty-four 250k maps are completed, of which
eight have been printed and the remainder are available as provisional
colour plots under the open file system.
Click here for a Summary of the Namibian
Geology.
A simplified geological map of Namibia
is available here.
For the compilation of the 250k geological map series 50k and 100k
base maps were used, as well as reconnaissance maps, where no detailed
mapping was available. Thus, the resolution of these maps varies
considerably, as only some 40% of the country’s outcrop area
(ca. 50% of the surface area) have been mapped at 50k scale. Larger
scale maps (from 2k to 50k ) have been produced within the framework
of university research and mineral exploration and are stored in
the archive of the National Earth Science and Energy Information
Centre or digitally in the Earth Data Namibia Database.
|
| In addition to
these regional geological maps the following thematic maps are available:
1)
Map of the Damara Orogen
The 1:500 000 scale map of the Pan-African Damara Orogen, was published
as part of a special publication by the Geological Society of South
Africa (1983). The information contained in this map is also available
in shapefile format.
2)
Hydrogeological Map of Namibia
The
Hydrogeological Map of Namibia (Scale 1:1 000 000) was published
in 2001. It was compiled as a collaboration project between the
Department of Water Affairs (Namibia) and the Geological Survey
of Namibia, under the auspices of the Federal Institute for Geosciences
and Mineral Resources (BGR, Germany), who provided funding as well
as expertise in GIS map compilation. The map is accompanied by a
booklet, describing the various groundwater domains of the country,
source of data and containing other relevant information. The map
shown here is a simplified version.
3)
The Nama Group of Namibia
A map showing
the distribution of the Neoproterozoic to Cambrian Nama Group in
Namibia, with as much detailed as has been mapped to date, was compiled
in connection with IGCP Project 493. This map is unpublished, but
1:500 000 scale color plots are available upon request under the
open file system. Due to the extent of the Nama Group the most detailed
version (scale 1:250 000) is only available in digital format (ESRI
shapefiles, Projection: UTM Zone 33S). The map shown on this site
is a simplified version.
3)
Mesoproterozoic Belts of Namibia
A map showing
the Mesoproterozoic Belts of Namibia (Namaqua Belt, Rehoboth Inlier,
Sinclair Sequence and equivalents) was produced for a combined field
workshop of IGCP Projects 418 and 440 in 2002. The map, which was
compiled at scale 1:1 000 000 is unpublished, but color plots are
available upon request under the open file system.
4)
Metamorphic Map of Namibia
The metamorphic
map is based on the 1:1 000 000 geological map of Namibia. Information
from various studies was used to determine metamorphic grade and
domain, and compiled as a draft map. The map is unpublished, but
may be made available upon request.
International
Research Co-operation
The Regional
Geoscience division actively participates in the following international
research projects, including a number of IGCP (International Geological
Correlation Programme) projects:
- Fluviomarine
terraces, drainages and sea level changes (University of Aachen
, Germany)
- Structural
and metamorphic evolution of the lower Ugab and Goantagab zones
(University of Mainz, Germany)
- Sm-Nd, U-Pb,
Rb-Sr and K-Ar isotope systematics of the Huab Metamorphic Complex
(University of Gottingen, Germany)
- Palaeontology,
sequence stratigraphy and sedimentary evolution of the Nama Group,
southern Namibia (Monash University, Melbourne, Australia; Russian
Academy of Sciences, Moscow, Russia)
- Tectonic
evolution of the Hoanib River Valley, Kaoko Belt (Federal University
of Rio Grande do Sul, Brazil)
- Potential
of hyperspectral remote sensing for geological mapping and resource
evaluation in arid regions (South Dakota School of Mines and Technology,
USA)
- Sequence
stratigraphy and structural analysis of the Otavi Group and the
relationship to mineralization (University of Heidelberg, Germany)
IGCP
418 |
Evolution
of Mesoproterozoic Orogenic Belts of central and
south western Africa |
IGCP
419 |
Foreland
basins of the Neoproterozoic Belts of central southern Africa
and South America |
IGCP
440 |
Mesoproterozoic
assembly and Neoproterozoic breakup of the Rodina Supercontinent |
IGCP
470 |
The 600
Ma Pan-African Belt of central Africa: Sedimentation, deformation
history, magmatism, metamorphism and geotectonic evolution (link:
http://www.igcp470.org/
) |
IGCP
478 |
Neoproterozoic
– Early Palaeozoic events in southwest Gondwana: Palaeogeographic,
palaeoclimatic, palaeobiologic and tectonomagmatic events within
the framework of southwest Gondwana (link: http://www.vssagi.com/igcp478/igcp478.htm
) |
IGCP
493 |
Rise and
fall of the Vendian biota: Palaeoenvironmental, palaeoclimatic
and plate tectonic controls on the preservation and biodiversity
of the Vendian biota, with a comparison of Gondwana and northern
assemblages
(link: http://www.geosci.monash.edu.au/precsite/
) |
IGCP
509 |
Palaeoproterozoic.
Supercontinents and Global Evolution
(link: http://earth.geology.yale.edu/igcp509/
) |
For more detail
on geological maps available and information on how to order products
click here.
|