Geology Reference
In-Depth Information
Fig. 15.4
Examples of the drainage types found within the Congo
Basin, with stream channels derived from the SRTM data. The
corresponding drainage types are : (A) Dendritic, (B) Sub-dendritic,
(C) Parallel,
locations of the drainage examples. Refer to Table
15.1
for pattern
descriptions and Table
15.2
for drainage pattern classification. Stream
channels were generated from SRTM DSM V3 90 m (Reuter et al.
2007
; Jarvis et al.
2008
)
(D) Sub-parallel,
(E) Trellis,
(F) Rectangular,
(G)
Rectangular-angulate,
(H) Contorted.
(I) shows the approximate
Lomami and Tshuapa Rivers (Figs.
15.2
and
15.5
). Late
Neogene and Quaternary alluvium mantling this oval, shal-
low bowl like depression overlie thick continental sediments
continental sediments are thought to originate from the ero-
sion of the surrounding periphery of the basin and have been
accumulating in the basin since the mid Paleozoic (e.g. Linol
of
deposits and reworked sediments of the Congo River, has
lead several authors to suggest that the central CB has
experienced a tendency for recurrent subsidence, with
corresponding uplift around its edges (Linol et al., Chap.
11
, this topic).
The southern reaches of the Congo Basin are dominated
by the northward extension of the Kalahari Plateau
(Figs.
15.2
and
15.5
). It is along this plateau that the water-
shed of
the
Cuvette Central
, along with thick sedimentary
the northward flowing Congo rivers and the
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