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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
Sefe, F.T.K. 1998. Climate and water resources (Botswana sector). Okavango River Basin Preparatory Assessment Study, Department of Environmental Science, University of Botswana, Gaborone
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1998Bibliography compiled for Okavango River: The flow of a lifeline.Report6.65 mb pdf
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Carruthers, R.M. and Greenwood, P.G. 1973. Geophysical surveys in the Okavango Delta. Geophysical surveys in the Okavango Delta, report no. 15, Applied Geophysics Unit, IGS, London
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1973Bibliography compiled for Okavango River: The flow of a lifeline.Report
Gieske, A. 1996. Vegetation driven groundwater recharge below Okavango Delta, Botswana as a solute sink mechanism - an indicative model. Boswana Journal of Earth Science, 3: 33-37
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1996Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article344 kb pdf
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Gumbricht, T., McCarthy, J. and McCarthy,T.S. 2000. Portraying the geophysiology of the Okavango Delta, Botswana. Department of Geology, Witwatersrand University, South Africa
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2000Bibliography compiled for Okavango River: The flow of a lifeline.Report225 kb pdf
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McCarthy, J. 2002. Remote sensing for detection of landscape form and function of the Okavango Delta, Botswana. Royal Institute of Technology, Stockholm (Ph D. thesis.)
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2002Bibliography compiled for Okavango River: The flow of a lifeline.Thesis7.85 mb pdf
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Scholtz, C.H. 1975. Seismicity, tectonics and seismic hazard of the Okavango Delta. DP/BOT/71/506 Project report, Gaborone, UN/FAO
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1975Bibliography compiled for Okavango River: The flow of a lifeline.Report
Shaw, P.A. and Cooke, H.J. 1986. Geomorphic evidence for the late Quaternary paleoclimates of the middle Kalahari of northern Botswana. Catena, 13(4): 349-359
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1986Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article
Hutchins, D.G, Hutton, S.M and Jones, C.R. 1976. The geology of the Okavango Delta. Okavango Delta Symposium, Proceedings of the Symposium on the Okavango Delta and its future utilization, National Museum, Gaborone, (Botswana Society): 13-19
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1976Bibliography compiled for Okavango River: The flow of a lifeline.Report364 kb pdf
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Cooke, H.J. 1976. The paleogeography of the middle Kalahari of northern Botswana and adjacent areas. Okavango Delta Symposium, Proceedings of the Symposium on the Okavango Delta and its future utilization, National Museum, Gaborone, (Botswana Society): 20
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1976Bibliography compiled for Okavango River: The flow of a lifeline.Report5.84 mb pdf
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Wilson, B.H. and Dincer, T. 1976. An introduction to the hydrology and hydrography of the Okavango Delta. 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.Report4.53 mb pdf
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Russel-Smith, A. 1976. Preliminary observation on the effects of insecticide application on the aquatic fauna of the Okavango Delta. Okavango Delta Symposium, Proceedings of the Symposium on the Okavango Delta and its future utilization, National Museum
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1976Bibliography compiled for Okavango River: The flow of a lifeline.Report7.25 mb pdf
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Dando, B.C. 1976. Human health problems associated with the Okavango Delta. Okavango Delta Symposium, Proceedings of the Symposium on the Okavango Delta and its future utilization, National Museum, Gaborone, (Botswana Society): 248-262
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1976Bibliography compiled for Okavango River: The flow of a lifeline.Report7.45 mb pdf
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Astle, W.L. and Braun, H.B. 1977. Selected soil profile descriptions. Investigation of the Okavango Delta as a Primary Water Resource for Botswana, Technical note No. 35, UNDP, FAO
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1977Bibliography compiled for Okavango River: The flow of a lifeline.Report
McCarthy, T.S., Ellery, W.N. and Rogers, K.H. 1987. Observation on the abandoned Nqoga Channel of the Okavango Delta. Botswana Notes and Records, 19: 83-89
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1987Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article364 kb pdf
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McCarthy, T.S., Stanistreet, I.G., Cairncross, B., Ellery, W.N., Ellery, K., Oelofse, R. and Grobicki, T.S.A. 1988. Incremental aggradation on the Okavango Delta-fan, Botswana. Geomorphology, 1: 267-278
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1988Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article832 kb pdf
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Ellery, W. N., Ellery, K., Rogers, K.H., McCarthy, T.S.and Walker, B.H. 1993. Vegetation, hydrology and sedimentation processes as determinants of channel form and dynamics in the northeastern Okavango Delta, Botswana. African Journal of Ecology, 31: 10-25
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1993Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article3.02 mb pdf
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Ellery, W.N. and McCarthy, T.S. 1998. Environmental change over two decades since dredging and excavation of the lower Boro River, Okavango Delta, Botswana. Journal of Biogeography, 25: 361-378
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1998Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article989 kb pdf
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Merry, C.l., Heister, H., Barry, M., Ellery, W.N., McCarthy, T.S., Ruther, H. and Sternberg, H. 1988. GPS Heighting in the Okavango Delta. Journal of Surveying Engineering, 145: 153-163
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1988Bibliography compiled for Okavango River: The flow of a lifeline.Journal Article1.96 mb pdf
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Bonyongo, M.C., Mubyana, T., Totolo, O. and Veenandaal, E.M. 2002. Flooding and soil nutrient status in the Okavango Delta's seasonal floodplains. Botswana Notes and Records, 34: 123-130
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2002 Journal Article
Wolski, P., Murry-Hudson, M., Fernkvist, P., Lidén, A., Huntsman-Mapila, P. and Ramberg, L. 2005. Islands in the Okavango Delta as sinks of water-borne nutrients. Botswana Notes and Records, 37 (Special Edition on Human Interactions and Natural Resource Dynamics in the Okavango Delta and Ngamiland): 253-263
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2005 Journal Article1.6 mb pdf
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Modisi, M.P. 2000. Fault system at the southeastern boundary of the Okavango Rift, Botswana. Journal of African Earth Sciences, 30(3): 569–578
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2000 Journal Article
Ward, J.D. 1984. A reappraisal of the cenozoic stratigraphy in the Kuiseb valley of the central Namib desert. Proceedings of an International Symposium by the South African Society for Quaternary Research. Late Cainozoic palaeoclimates of the Southern Hemisphere. A.A. Balkema. Rotterdam, 455-464
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1984DRFN DLIBReport
Watson, A. 1979. Gypsum crusts in deserts. Journal of Arid Environments, 2(1): 3-21
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1979DRFN DLIBJournal Article
Heine, K. and Walter, R. 1996. Gypcretes of the central Namib Desert, Namibia. In: Palaeoecology of Africa and the surrounding islands, Rotterdam, A.A.Balkema
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1996DRFN DLIBBook, Book Section, Booklet15 mb pdf
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