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McCarthy, T.S. and Metcalfe, J. 1990. Chemical sedimentation in the semi-arid environment of the Okavango Delta, Botswana. Chemical Geology, 89: 157-178


Description:

Chemical sedimentation in the semi-arid environment of the Okavango Delta.

Summary / Notes:

The Okavango basin is an area of active diagenetic carbonate and silica accumulation. Evapotranspiration exceeds presipitation by a factor of 3 and - 96% of the incoming water is lost to the atmosphere. Evaporative concentration of dissolved solids occurs and they precipitate in the capillary fringes of islands. The less soluble components CaCO3 and SiO2 precipitate in the soils, which results in a significant volume increase which has important implications for the topography of the area and the character of the sediment fill. Geomorphology; Water chemistry.

Year: 1990

Type: Journal Article

Origin: Bibliography compiled for Okavango River: The flow of a lifeline.

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McCarthy, T.S., Ellery, W.N. and Ellery, K. 1993. Vegetation-induced, subsurface precipitation of carbonates as an aggradational process in the permanent swamps of the Okavango delta (fan), Botswana. Chemical Geology, 107: 111-131
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1993Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article1.35 mb pdf
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McCarthy, T.S., McIver, J.R. and Verhagen, B. Th. 1991. Groundwater evolution, chemical sedimentation and carbonate brine formation on an island in the Okavango Delta swamp, Botswana. Applied Geochemistry, 6: 577-595
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1991Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article2.62 mb pdf
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Gumbricht, T., McCarthy, T.S. and Merry, C.L. 2001. The topography of the Okavango Delta, Botswana, and its tectonic and sedimentological implications. South African Journal of Geology, 104: 243-264
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2001Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article
McCarthy, T.S., McIver, J.R., Cairncross, J.R., Ellery,K. and Ellery, W.N. 1989. The Inorganic chemistry of peat from the Maunachira channel-swamp system, Okavango Delta, Botswana. Geochim. Cosmochim. Acta, 53: 1077-1089
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1989Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article1.02 mb pdf
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McCarthy, T.S., McIver, J.R., Cairncross, B., Ellery, W.N. and Ellery, K. 1990. The inorganic chemistry of peat from the Okavango Delta, Botswana: implications for low-ash coal formation. International Journal of Coal Geology, 16: 143-146
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1990Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article579 kb pdf
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Stanistreet, I.G. and McCarthy, T.S. 1993. The Okavango Fan and the classification of subaerial fan systems. Sedimentary Geology, 85 Elsevier Science Publishers B.V., Amsterdam: 115-133
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1993Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article1.32 mb pdf
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McCarthy, T.S. and Ellery, W.N. 1994. The effect of vegetation on soil and groundwater chemistry and hydrology of islands in the seasonal swamps of the Okavango Fan, Botswana. Journal of Hydrology, 154(1-4): 169-193
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1994Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article
Bereslawski, E. 1997. Geohydrology, geology and soils of the Cubango River Basin, Angolan sector. Okavango River Basin Preparatory Assessment Study, Okacom
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1997Bibliography compiled for Okavango River: The flow of a lifeline.Report487 kb pdf
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Cronberg, G., Gieske, A., Martins, E., Mengu, J.P. and Stenstrom, I-M. 1995. Hydrobiological studies of the Okavango Delta and Kwando /Lenyanti /Chobe River, Botswana, I surface water quality analysis. Botswana Notes and Records, 27: 151 - 226
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1995Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article6.43 mb pdf
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Gumbricht, T., McCarthy, J. and McCarthy, T.S. Channels, wetlands and islands in the Okavango Delta, Botswana, and their relation to hydrological and sedimentological processes. Earth Surface Processes and Landforms, In press
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Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article3.42 mb pdf
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Hutchins, D.G., Hutton, L.G., Hutton, S.M., Jones, C.R. and Loenhert, E.P. 1976. A summary of the geology, seismicity, geomorphology and hydrogeology of the Okavango Delta. Bulletin 7, Geological Survey Department, Lobatse, Botswana
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1976Bibliography compiled for Okavango River: The flow of a lifeline.Report1.61 mb pdf
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Biggs, R.C. 1976. The effects of seasonal flood regime on the ecology of Chief's Island and the adjacent floodplain system. Okavango Delta Symposium, Proceedings of the Symposium on the Okavango Delta and its future utilization, National Museum, Gaborone
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1976Bibliography compiled for Okavango River: The flow of a lifeline.Report4.46 mb pdf
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McCarthy, T.S., McIver, J.R. and Cairncross, B. 1986. Carbonate accumulation on islands in the Okavango Delta, Botswana. South African Journal of Science, 82Department of Geology and Botany, University of Witwatersrand, Johannesburg: 588-591
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1986Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article367 kb pdf
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McCarthy, T.S., Rogers, K.H., Stanistreet, I.G., Ellery, W.N., Cairncross, B. and Ellery, K. 1988. Features of Channel Margins in the Okavango Delta. Palaeoecology of Africa and the Surrounding Islands, 19. Southern African Society for Quaternary Research
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1988Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article665 kb pdf
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Cairnicross, B., Stanistreet, I.G., McCarthy, T.S., Ellery W.N., Ellery K. and Grobicki T.S.A. 1988. Palaeochannels (stone-rolls) in coal seams: Modern analogues from fluvial deposits of the Okavango Delta, Botswana, southern Africa. Sedimentary Geology, 57: 107-118
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1988Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article812 kb pdf
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McCarthy, T.S. 1992. Physical and Biological Processes Controlling the Okavango Delta - a Review of Recent Research. Botswana Notes and Records, 24: 57-86
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1992Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article5.24 mb pdf
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Ellery, W.N., Ellery, K. and McCarthy, T.S. 1993. Plant distribution in islands of the Okavango Delta, Botswana: determinants and feedback interactions. African Journal of Ecology, 31: 118-134
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1993Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article1.08 mb pdf
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McCarthy, T.S., Green, R.W. and Franey, N.J. 1993. The influence of neo-tectonics on water dispersal in the northeastern regions of the Okavango swamps, Botswana. Journal of African Earth Sciences, 17(1): 23-32
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1993Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article
Ellery, W.N., McCarthy, T.S. and Dangerfield, J.M. 1998. Biotic Factors in Mima Mound development: Evidence from the Floodplains of the Okavango Delta, Botswana. International Journal of Ecology and Enviromental Sciences, 24: 293-313
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1998Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article1.26 mb pdf
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McCarthy, T.S. and Cadle, A.B. 1995. Alluvial fans and their natural distinction from rivers based on morphology, hydraulic processes, sedimentary processes, and facies assemblages - discussion. Journal of Sedimentary Research, A65: 581-583
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1995 Journal Article232 kb pdf
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McCarthy, T.S. and Ellery, W.N. 1995. Sedimentation on the distal reaches of the Okavango Fan, Botswana, and its nearing on calcrete and silcrete (Ganister) formation. Journal of Sedimentary Research, A65, No. 1: 77-9
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1995 Journal Article1.01 mb pdf
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Approximate boundaries of old fluvial sediments, Okavango
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2004Data compiled for Okavango River: The flow of a lifeline.Shapefile4 kb zip
Kalahari age sediments, Okavango
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2004Data compiled for Okavango River: The flow of a lifeline.Shapefile696 kb zip
Simmonds, E.B. 2000. Natural Resource Mapping of the Kavango Region, Specialist Report 2: Soils of the Kavango Region. A Report for the Kavango Environmental Profile Programme. Ministry of Environment and Tourism, Directorate of Environmental Affairs
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2000 Report8.42 mb pdf
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Gumbricht, T. and McCarthy, T.S. 2003. Spatial patterns of islands and salt crusts in the Okavango Delta, Botswana. South African Geographical Journal, 85(2): 164-169
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2003 Journal Article664 kb pdf
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Gieske, A. 1996. Modelling of surface outflow from the Okavango Delta. Botswana Notes and Records, 28: 165-192
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1996 Journal Article
Cassidy, L. 1997. The human environment, Botswana Sector. Okavango River Basin Preparatory Assessment Study, OKACOM
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1997Bibliography compiled for Okavango River: The flow of a lifeline.Report1.35 mb pdf
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Shaw, P.A. 1988. Review of geomorphological history of the Delta
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1988Bibliography compiled for Okavango River: The flow of a lifeline.Report
Worthington, E.B. 1976. The conservation of wetlands in Africa. Okavango Delta Symposium, Proceedings of the Symposium on the Okavango Delta and its future utilization, National Museum, Gaborone, (Botswana Society): 61-66
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1976Bibliography compiled for Okavango River: The flow of a lifeline.Report6.74 mb pdf
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Thompson, K. 1976. The primary productivity of African wetlands, with particular reference to the Okavango Delta. Okavango Delta Symposium, Proceedings of the Symposium on the Okavango Delta and its future utilisation, National Museum, Gaborone, Botswana
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1976Bibliography compiled for Okavango River: The flow of a lifeline.Report5.32 mb pdf
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Afriyie, E.K. 1976. Human resources of the Okavango Area: Some implication for development projects. Okavango Delta Symposium, Proceedings of the Symposium on the Okavango Delta and its future utilization, National Museum, Gaborone, (Botswana Society): 17
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1976Bibliography compiled for Okavango River: The flow of a lifeline.Report3.5 mb pdf
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Bridgens, A.B. 1976. International co-operation in Southern Africa with special reference to SARCCUS and the Okavango Delta. Okavango Delta Symposium, Proceedings of the Symposium on the Okavango Delta and its future utilization, National Museum, Gaborone
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1976Bibliography compiled for Okavango River: The flow of a lifeline.Report8.19 mb pdf
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Ernest, H.M. 1976. Manipulation of the Okavango Delta for increased outflow: its impact and constraints. Okavango Delta Symposium, Proceedings of the Symposium on the Okavango Delta and its future utilization, National Museum, Gaborone, (Botswana Society)
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1976Bibliography compiled for Okavango River: The flow of a lifeline.Report7.93 mb pdf
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Thomas, D.S.G. 1987. Discrimination of depositional environments using sedimentary characteristics in the Mega Kalahari, central southern Africa. In: Frostick L. and Reid I. (eds), 1987, Desert Sediments: Ancient and Modern, Geological Society Special Publication
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1987Bibliography compiled for Okavango River: The flow of a lifeline.Book, Book Section, Booklet2.99 mb pdf
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Ellery, W.N., Ellery, K., Rogers, K.H., McCarthy, T.S. and Walker, B.H. 1990. Vegetation of channels of the northeastern Okavango Delta, Botswana. African Journal of Ecology, 28: 276-280
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1990Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article899 kb pdf
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McCarthy, T.S., Stanistreet, I.G. and Cairncross, B. 1991. The sedimentary dynamics of active fluvial channels on the Okavango fan, Botswana. Sedimentology, 38: 471-487
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1991Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article2.85 mb pdf
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McCarthy, T.S., Franey, N.J., Ellery, W.N. and Ellery, K. 1993. The use of SPOT imaginary in the study of environmental processes of the Okavango Delta, Botswana. South African Journal of Science, 89: 432-436
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1993Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article458 kb pdf
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Ellery, W.N. and McCarthy, T.S. 1994. Principles for the sustainable utilization of the Okavango Delta ecosystem, Botswana. Biological Conservation, 70(2): 159-168
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1994 Journal Article
Simplification of geological features in the Okavango Basin
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2004Data compiled for Okavango River: The flow of a lifeline.Shapefile428 kb zip
Interpolation of the GOTOPO 1-km interval grid data set of spot elevations, Okavango. African elevations
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2004Data compiled for Okavango River: The flow of a lifeline.Shapefile221 kb zip
Okavango River Panhandle Management Plan. Prepared for the Tawana Land Board by NRP. Draft Final Report Volume 2, Background Information. Ministry of Lands, Housing and Environment
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2001 Report7.44 mb pdf
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Masamba, W.R.L., Mapila, H., Ringrose, S. and Wolski, P. 2008. Hydrological, geomorphological and geochemical processes in the Okavango Delta : water resource management implications. Proceedings of the second IASTED Africa Conference on Water Resource Management (Africa WRM 2008), September 8-10, 2008, Gaborone, Botswana, 240-245
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2008 Report445 kb pdf
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Humphries, M.S., McCarthy, T.S., Cooper, G.R.J., Stewart, R.A. and Stewart, R.D. 2014. The role of airborne dust in the growth of tree islands in the Okavango Delta, Botswana. Geomorphology, 206: 307–317
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2014 Journal Article
McCarthy, T.S., Humphries, M.S., Mahomed, I., Le Roux, P. and Verhagen, B.T. 2012. Island forming processes in the Okavango Delta, Botswana. Geomorphology, 179: 249–257
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2012 Journal Article
Pröpper, M., Gröngröft, A., Finckh, M., Stirn, S., de Cauwer, V., Lages, F., Masamba, W., Murray-Hudson, M., Schmidt, L., Strohbach, B. and Jürgens, N. 2015. The Future Okavango - Findings, Scenarios and Recommendations for Action. Research Project Final Synthesis, Report 2010 - 2015, 190 pages
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2015 Book, Book Section, Booklet9.37 mb pdf
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McCarthy, T.S. 1992. Processes in the formation of the OKavango Fan Delta. Abstract: Kalahari Symposium 1992
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1992 Report585 kb pdf
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Biggs, R. 1975. An ecological survey of Chief's Island and the adjacent floodplain. Botswana Notes and Records, 7: 203-204
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1975 Journal Article
Wilkinson, M. J. 1988. Tertiary events in the Tumas River basin, central Namib Desert: geology and geomorphology of the Naarip plain. Conference Proceedings. Symposium on the geomorphology of Southern Africa. Southern African landscapes: a geomorphological field guide. Transkei, 137-164
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1998 Presentation
Lancaster, N. 1984. Late Cenozoic fluvial deposits of the Tsondab Valley, central Namib Desert. Madoqua, 13(4): 257-269
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1984DRFN DLIBJournal Article13.46 mb pdf
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Scholz, H. 1968. Die Böden der Wüste Namib/Südwestafrika. Zeitschrift für Pflanzenernährung und Bodenkunde, 119(2): 91-107
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1968DRFN DLIBJournal Article

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