Geology and Resource Potential of the Congo Basin by Maarten J. de Wit, François Guillocheau, Michiel C. J. de

By Maarten J. de Wit, François Guillocheau, Michiel C. J. de Wit

This ebook summarizes the geomorphology, geology, geochronology, geophysics and mineral assets of the Congo Basin, one of many world’s so much enigmatic and poorly understood significant intra-continental sedimentary basins, and its flanking components of primary Africa. It presents an up to the moment research of the big region’s foundation and evolution. The book’s nineteen chapters take the reader in the course of the whole basement heritage, in addition to the Basin’s ca. seven-hundred million years of canopy sequences. ranging from its Archean cratons and Proterozoic cellular belts, and continuing during the Phanerozoic sequences, together with the newest Cenozoic successions, the booklet additionally explores the current drainage structures and the sophisticated yet advanced topography of the Congo Basin. It additionally provides and evaluates new basin types and similar dynamic methods, in addition to revised correlation schemes with its Gondwana opposite numbers in South the United States, all of which supply key insights into its wealthy diamond deposits and different mineral wealth, that are documented within the ultimate chapters.

A particular function of this ebook is its synthesis, played by means of groups of energetic specialists, of an unlimited volume of geoscientific info formerly basically recorded in study experiences, corporation experiences, survey announcements, and scattered magazine articles and books.

The sheer dimension of the Congo Basin (ca.1.8 million km2, or simply less than part the world of the ecu) and important Africa (some 7 million km2, or greater than 70% of the realm of the us) will make this a sought-after resource of data and thought in this particular region.

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Hartley and Allen (1994) proposed that this anomaly was unlikely to be supported by variations in crustal structure, and Hartley et al. (1996) suggested that the correlations between gravity anomalies and topography are indicative of convective processes in the underlying mantle. A number of recent studies have discussed the cause of the long wavelength gravity anomaly and the potential relationship to basin formation. Downey and Gurnis (2009) suggested that there must be an anomalously dense body, possibly made of eclogite, within the mantle beneath the basin.

2008; Toteu et al. 1994; De Wit et al. 2008; see also de Wit and Linol, Chap. 2, this Book). J. de Wit et al. 1007/978-3-642-29482-2_1, # Springer-Verlag Berlin Heidelberg 2015 3 1 4 A. Raveloson et al. 0˚ 10˚ 20˚ 30˚ 40˚ 50˚ 10˚ 10˚ Bomu Craton Ntem Craton 0˚ S M 0˚ GD K-A Belt t Bangweulu Block -10˚ id e Be lt Kiba Kasai Craton -10˚ ran B elt Tanzania Craton Iru m Fig. 1 Topographic map of central and southern Africa showing the major Archean cratons (Kaapvaal, Zimbabwe, Tanzania, Kasai, Bomu, Ntem; solid black lines), the greater Congo Shield (dashed black line), the zero thickness contour for the Mesozoic and Cenozoic sediments of the Congo Basin (blue line), the inferred location of Neoproterozoic rifts within the Congo Basin (red dashed lines), and the outline of the Bouguer gravity map in Kadima et al.

1), the fastest velocities are found beneath the southern and central portions of the Congo Basin. The regions of fast velocity extending from coastal regions offshore Angola, Namibia and South Africa probably result from smearing of upper mantle structure across the continent-ocean boundary. In the resolution tests (Fig. 10), checkers in these regions are less well resolved than within the interior of the continent. Similarly, the region of fast upper mantle velocities in South Sudan probably results from structure in that part of the model being less well resolved than to the south.

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