Geology Reference
In-Depth Information
Fig. 19.1
General map of Cental Africa (CA), showing countries with DRC highlighted. The general areas of mineral deposits are shown
Shield (CAS and CS, as defined in de Wit and Linol, Chap.
2
,
this Topic; Fig.
19.3
). We then use this data of the CA, CAS
and CS to define an
layers: geology, structure/tectonics, and minerals; for sim-
plicity the structure/tectonic layer (e.g. lineaments, faults,
foliations etc.) is excluded in this study.
The geology layer of the Gondwana database includes the
chronostratigraphy and limited lithostratigraphy modified and
updated from the Geological Map of Gondwana (de Wit et al.
1988
) fromwhich Central Africa is simplified and displayed in
Fig.
19.2
. For the purpose here, five different geologic time-
domains (e.g. æons, eras) are distinguished (Archean [A],
Meso-Paleoproterozoic [MPP]; Neoproterozoic remobilised
Archean [NprA]; Neoproterozoic remobilised Proterozoic
[NprP]; and Neoproterozoic [Np]; see Thiart and de Wit
2008
; Fig.
19.2
). Remobilised (r) spacial-domains domains
fingerprint that reflects
an expected mineral endowment in the basement beneath the
Phanerozoic cover of the Congo Basin (CB).
“
expert weight
”
19.2 GO-GEOID: The Geology and Mineral
Deposit Data Base
The GO-GEOID
GO
ndwana—
GEO
scientific
I
ndexing
D
atabase is a relational database, commonly referred to as
the Gondwana database, which consists of three thematic
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