Late cenozoic shallow marine diamond placers off the northern Sperrgebiet, Namibia

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dc.contributor.advisorCompton, Johnen_ZA
dc.contributor.authorOelofsen, Andréen_ZA
dc.date.accessioned2014-07-30T17:27:32Z
dc.date.available2014-07-30T17:27:32Z
dc.date.issued2008en_ZA
dc.descriptionIncludes bibliographical references (leaves 185-193).
dc.description.abstractSmall scale diver-assisted diamond mining has taken place since 1990 in the shallow marin (<30 m water depth) portions of Mining Licence 45 (Elizabeth Bay) between Halifax Island and Elizabeth Bay along the southwestern coast of Namibia. These operations in the northern part off the coast of the Sperrgebiet have produced almost 400,000 carats over a period of 17 years. Although sparse records remain from the early days, sufficient data from various sources were collected, collated and summarised to make meaningful observations. From historic and current diamond diving records, 4 submarine areas which have yielded high returns were described in terms of their geomorphology, sedimentology and diamond occurrence. Using detailed geophysical survey data (Sidescan Sonar and Multi-beam Bathymetry), the deposition of diamonds at these sites were modelled in GIS-based reconstructions. The diamond size frequency distribution (SFO) of the Shallow Marine (0 to -30 m) deposits in the study area is similar to the proximal aeolian deposit mined on land at Elizabeth Bay and the deeper Midwater (-30 to -70 m depth) deposits situated southwest of the study area.en_ZA
dc.identifier.apacitationOelofsen, A. (2008). <i>Late cenozoic shallow marine diamond placers off the northern Sperrgebiet, Namibia</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Geological Sciences. Retrieved from http://hdl.handle.net/11427/4215en_ZA
dc.identifier.chicagocitationOelofsen, André. <i>"Late cenozoic shallow marine diamond placers off the northern Sperrgebiet, Namibia."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Geological Sciences, 2008. http://hdl.handle.net/11427/4215en_ZA
dc.identifier.citationOelofsen, A. 2008. Late cenozoic shallow marine diamond placers off the northern Sperrgebiet, Namibia. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Oelofsen, André AB - Small scale diver-assisted diamond mining has taken place since 1990 in the shallow marin (&lt;30 m water depth) portions of Mining Licence 45 (Elizabeth Bay) between Halifax Island and Elizabeth Bay along the southwestern coast of Namibia. These operations in the northern part off the coast of the Sperrgebiet have produced almost 400,000 carats over a period of 17 years. Although sparse records remain from the early days, sufficient data from various sources were collected, collated and summarised to make meaningful observations. From historic and current diamond diving records, 4 submarine areas which have yielded high returns were described in terms of their geomorphology, sedimentology and diamond occurrence. Using detailed geophysical survey data (Sidescan Sonar and Multi-beam Bathymetry), the deposition of diamonds at these sites were modelled in GIS-based reconstructions. The diamond size frequency distribution (SFO) of the Shallow Marine (0 to -30 m) deposits in the study area is similar to the proximal aeolian deposit mined on land at Elizabeth Bay and the deeper Midwater (-30 to -70 m depth) deposits situated southwest of the study area. DA - 2008 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2008 T1 - Late cenozoic shallow marine diamond placers off the northern Sperrgebiet, Namibia TI - Late cenozoic shallow marine diamond placers off the northern Sperrgebiet, Namibia UR - http://hdl.handle.net/11427/4215 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/4215
dc.identifier.vancouvercitationOelofsen A. Late cenozoic shallow marine diamond placers off the northern Sperrgebiet, Namibia. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Geological Sciences, 2008 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/4215en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Geological Sciencesen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherGeological Sciencesen_ZA
dc.titleLate cenozoic shallow marine diamond placers off the northern Sperrgebiet, Namibiaen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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