“Bangui anomaly” is the name given to one of the Earth's largest crustal magnetic anomalies and the largest over the African continent. It covers two‐thirds of the Central African Republic and the name derives from the capital city Bangui that is near the center of this feature. From surface magnetic survey data, Godivier and Le Donche (1962) were the first to describe this anomaly. Subsequently high‐altitude world magnetic surveying (see Aeromagnetic surveying ) by the US Naval Oceanographic Office (Project Magnet) recorded a greater than 1000 nT dipolar, peak‐to‐trough anomaly with the major portion being negative (Figure B5). Satellite observations (Cosmos 49) were first reported in 1964 (Benkova et al., 1973); these revealed a –40nT anomaly at 350 km altitude. Subsequently the higher altitude (417–499 km) Polar Orbiting Geomagnetic Observatory (POGO) satellites data recorded peak‐to‐trough anomalies of 20 nT. These data were added to Cosmos 49 measurements by Regan et al. (1973)...
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Bibliography
Benkova, N.P., Dolginow, S.S., and Simonenko, T.N., 1973. Residual magnetic field from the satellite Cosmos 49. Journal of Geophysical Research, 78: 798–803.
Boukeke, D.B., 1994. Structures crustales D'Afrique Centrale Déduites des Anomalies Gravimétriques et magnétiques: Le domaine précambrien de la République Centrafricaine et du Sud‐Cameroun. ORSTOM TDM 129.
De, S., Heaney, P.J., Hargraves, R.B., Vicenzi, E.P., and Taylor, P.T., 1998. Microstructural observations of polycrystalline diamond: a contribution to the carbonado conundrum. Earth and Planetary Science Letters, 164: 421–433.
Godivier, R., and Le Donche, L., 1962. Réseau magnétique ramené au 1er Janvier 1956: République Centrafricaine, Tchad Méridonial. 19 pages: 6 maps 1:2,500,000, Cahiers ORSTOM/Geophysique, No. 1.
Girdler, R.W., Taylor, P.T., and Frawley, J.J., 1992. A possible impact origin for the Bangui magnetic anomaly (Central Africa). Tectonophysics, 212: 45–58.
Green, A.G., 1976. Interpretation of Project MAGNET aeromagnetic profiles across Africa. Journal of the Royal Astronomical Society, 44: 203–208.
Magee, C.W. Jr., 2001. Constraints on the origin and history of carbonado diamond. PhD thesis, The Australian National University, Canberra.
Ravat, D., Wang, B., Widermuth, E., and Taylor, P.T., 2002. Gradients in the interpretation of satellite‐altitude magnetic data: and example from central Africa. Journal of Geodynamics, 33: 131–142.
Regan, R.D., Davis, W.M., and Cain, J.C., 1973. The detection of “intermediate” size magnetic anomalies in Cosmos49 and 0602.4.6 data. Space Research, 13: 619–623.
Regan, R.D., and Marsh, B.D., 1982. The Bangui magnetic anomaly: Its geological origin. Journal of Geophysical Research, 87: 1107–1120.
Rollin, P., 1995. Carte Tectonique de République Centrafricaine. Université de Besançon.
Smith, J.V., and Dawson, J.B., 1985. Carbonado: diamond aggregates from early impacts of crustal rocks? Geology, 13: 342–343.
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Taylor, P.T. (2007). Bangui Anomaly. In: Gubbins, D., Herrero-Bervera, E. (eds) Encyclopedia of Geomagnetism and Paleomagnetism. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-4423-6_13
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