The Africa Special Natural Features Dataset (Faults, Escarpments, Kimberlites)

New-ID: NBI34

The Africa Special Natural Features Dataset documentation

This dataset shows escarpments, faults and kimberlites.

Files: SPF08.E00 Code: 100059-001
SPF09.E00 100059-002
SPF10.E00 100059-003
Vector Members The E00 files are in Arc/Info Export format and
should be imported with the Arc/Info command Import cover In-Filename
Out-Filename. The Africa special natural features dataset is part of
the UNEP/FAO/ESRI Database project that covers the entire world but
focuses here on Africa. The maps were prepared by Environmental
Systems Research Institute (ESRI), USA. Most data for the database
were provided by the Food and Agriculture Organization"'"s (FAO"'"s)
Soil Resources, Management and Conservation Service, Land and Water
Development Division, Italy. The Database was developed in
collaboration with the United Nations Environment Program (UNEP),
Kenya. The base maps used were the FAO Soil Map of the world (1977)
in Miller Oblated Stereographic projection, the Geological World Atlas
and the UNESCO International Tectonic Map of Africa. All sources were
re-registered to the basemap by comparing known features on the
basemap and the source maps. The digitizing was done with a spatial
resolution of 0.002 inches. The maps were then transformed from inch
coordinates to latitude/ longitude degrees. The transformation was
done by an unpublished algorithm (by US Geological Survey and ESRI) to
create coverage"'"s for one-degree graticules. This dataset shows
escarpments, faults and kimberlites. The location of the faults were
verified by Landsat imagery.

Contact : UNEP/GRID-Nairobi, P O Box 30552, Nairobi, Kenya
FAO, Soil Resources, Management ...., 00100, Rome, Italy.
ESRI, 380 New York Street, Redlands, CA 92373, USA

WARNING: ITEMS cannot be explained with the documentation. In
documentation 7 classes are named while in file only numbers 1 to 4.

The SPF08 line data shows faults etc North West of African continent
The SPF09 line data shows faults etc North East of African continent
The SPF10 line data shows faults etc South of African continent

References:

ESRI. Final Report UNEP/FAO world and Africa GIS data base (1984). Internal
Publication from ESRI, FAO and UNEP

FAO, UNESCO. Soil Map of the World(1977). Scale 1:5000000. UNESCO, Paris

UNESCO. Geological World Atlas (1976) 1:10000000. Commision for
the Geological Map of the World. Paris

G.Choubert. International Tectonic Map of Africa (1969). Scale 1:5000000
Map and explanatory note, Earth Science no.4. UNESCO, Paris

Source : UNESCO/FAO Soil Map of the World. Scale 1:5000000
Publication Date : Dec 1984
Projection : Miller (Arc/Info commands revmil and ADJUST to change to
Geographic)
Type : Line
Format : Arc/Info Export non-compressed
Related Datasets : All UNEP/FAO/ESRI Datasets
WSHDLL &WSHDPT 100018-xxx) Watersheds with prominent water divides.
Intergrated terrain units ITU (100004-xxx).