Crustal framework of Namibia derived from magnetic and gravity data
The National aeromagnetic and gravity data sets covering Namibia and its offshore areas, merged with satellite-derived offshore gravity data and ship-track magnetic data, provide an invaluable basis for mapping regional crustal structure. This study represents an interpretation of these potential field data sets, facilitating the compilation of a more cohesive map of the crustal framework of Namibia. A number of new structural features, both lineaments and ring structures, are identiied. Merging with the offshore data has also facilitated the mapping of the extensions offshore of the major tectono-stratigraphic domains and associated domain boundaries. Major intrusions and intrusive complexes are shown in relation to the mapped structures and a number of intrusions have been newly identified. The mapped structural framework provides an important basis for mineral exploration thinking and strategy. In particular, the ring structures, major lineaments and lineament zones, and their associated intrusions, could provide the conduits for and sources of mineralising fluids respectively.
Communications of the Geological Survey of Namibia
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Crustal framework of Namibia derived from magnetic and gravity data.pdf | 3.26 MB |