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Dissertations / Theses on the topic 'Namibia {Geologie}'

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Published: 4 June 2021
Last updated: 1 February 2022

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1

Raab, Matthias Johannes. "The geomorphic response of the passive continental margin of northern Namibia to Gondwana break-up and global scale tectonics." Doctoral thesis, [S.l.] : [s.n.], 2001. http://webdoc.sub.gwdg.de/diss/2001/raab/index.html.

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2

Hartmann, Kerstin. "Jungquartäre Reliefentwicklung, Substratgenese, Klimageschichte und aktuelle Morphodynamik am Ostrand der Namib in der Region Hartmannstal-Marienflusstal (NW-Namibia) /." Köln : Geograph. Inst. der Univ. zu Köln, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016293693&line_number=0002&func_code=DB_RECORDS&service_type=MEDIA.

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3

Van, der Merwe Hendrik Naude. "Remote sensing driven lithological discrimination within nappes of the Naukluft Nappe Complex, Namibia." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97147.

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Thesis (MSc)--Stellenbosch University, 2015.<br>ENGLISH ABSTRACT: Geological remote sensing is a powerful tool for lithological discrimination, especially in arid regions with minimal vegetative cover to obscure rock exposures. Commercial multispectral imaging satellites provide a broad spectral range with which to target specific rock types. Landsat ETM+ (7), ASTER, and SPOT 5 multispectral images were acquired and digitally processed: band ratioing, principle components analysis, and maximum likelihood supervised classification. The sensors were evaluated on the ability to discriminate
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4

Moroni, Marilena. "The geology, petrology and geochemistry of the mineralization and hydrothermal alteration at Ongeama, Ongombo and Matchless West Extension, Namibia." Thesis, Rhodes University, 1991. http://hdl.handle.net/10962/d1007693.

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The Matchless Amphibolite Belt (Damara Orogen, Namibia) hosts several volcanogenic-exhalative, sediment-hosted stratiform cupriferous pyrite deposits. These are thought to be related to submarine volcanism during the early evolutionary stages of a narrow Damaran ocean, the Matchless Trough. The mineralized bodies examined (Ongeama, Ongombo and Matchless West Extension) are deformed and metamorphosed to low-medium grade (greenschist-amphibolite facies). They are associated with metapelite and amphibolite country rocks, and crop out as prominent limonite-rich gossans. The elongated shape of the
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5

Cloete, Melissa. "Microbial diversity of the Namib Desert salt pans." University of the Western Cape, 2015. http://hdl.handle.net/11394/5230.

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>Magister Scientiae - MSc<br>Salt pans are a characteristic feature of many dry deserts. The microbial communities inhabiting salt pans are thought to be particularly complex and are generally dominated by halophilic microorganisms. Although saline pools are frequently found within the hyper-arid Namib Desert, the microbial communities of these saline sites have been scarcely investigated. The aim of the present study was to characterise the archaeal, bacterial and cyanobacterial diversity inhabiting these extreme saline pools using three culture independent molecular techniques (DGGE, T-RFLP
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6

Walraven, Felix Caspar. "The geology and alteration-mineralisation of the Gamigab Tin Prospect, Damaraland, Namibia." Thesis, Rhodes University, 1990. http://hdl.handle.net/10962/d1005568.

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The stratigraphy at the Gamigab Sn prospect consists of two mainly schistose units separated by a thick marble unit which have been assigned to the Orusewa, the Karibib and the Kuiseb Formations respectively. Four phases of folding affected the lithologies with the south-south-west trending F2 folds defining the main structures in the region. The area underwent low grades of metamorphism. Temperatures were in the range 420° to 500°C and pressures less than 2 kbars. The effects of contact metamorphism are seen in the south-east and south-west. Regional metamorphism outlasted the deformation and
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7

Guj, P., and P. Guj. "The Damara mobile belt in the south-Western Kaokoveld." Doctoral thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/23739.

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After the establishment of the N-S Andib-Ganamub trough, the ubiquitous Lower Nosib subarkose was succeeded in the west by the Upper Nosib greywacke which indicates that orthogeosynclinal subsidence was already active in pre-Damara times. A pulse of NNE folding (F₁N) concluded this sedinentary cycle and was accompanied by amphibolite-grade metamorphism (M₁), occasional migmatisation (A₁), and later feldspar blastesis. This episode was most intense in the west, so that the overlying Damara rocks paraconformable in the east, are unconformable there. Martin's (1965) separation of the succeeding D
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8

Viljoen, Wayne. "Geology, structure and mineralization of the Onguati area, Karibib district, central Namibia." Thesis, Rhodes University, 2005. http://hdl.handle.net/10962/d1005576.

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The study area is situated in the Southern Central Zone of the intracontinental Pan-African Damara Orogen, approximately 20km NNE of Navachab Gold Mine in the Karibib district of Namibia. Mesothermal vein systems with Cu-Fe±Au mineralization are hosted by amphibolite facies calcitic and dolomitic marbles belonging to the Navachab Member of the Karibib Formation, and are best developed around the defunct Onguati Copper Mine, Brown Mountain and Western Workings areas. The Onguati study area is located in the saddle region of a moderately-to-gently inclined anticlinorium that experienced signific
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9

Johnson, Shannon D. "Structural geology of the Usakos Dome in the Damara Belt, Namibia." Thesis, Stellenbosch : Stellenbosch University, 2005. http://hdl.handle.net/10019.1/50457.

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Thesis (MSc)--Stellenbosch University, 2005.<br>ENGLISH ABSTRACT: The northeast-trending south Central Zone (sCZ) of the Pan-African Damara belt in central Namibia is structurally characterized by kilometer-scale, northeast-trending dome structures developed in Neoproterozoic rocks of the Damara Sequence. A number of different structural models have been proposed for the formation of these domes in the literature. This study describes the structural geology of the Usakos dome. The study discusses the structural evolution of the dome within the regional framework of the cSZ that represen
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10

Nagel, Rudolf. "Eine Milliarde Jahre geologischer Entwicklung am NW-Rand des Kalahari-Kratons." [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=963612484.

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11

Eckardt, Frank. "THe distribution and origin of gypsum in the Central Namib Desert, Namibia : a study of the sulphur cycle in a coastal hyper-arid desert." Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285262.

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12

Milner, Simon Charles, and Simon Charles Milner. "The geology and geochemistry of the Etendeka Formation quartz latites, Namibia." Doctoral thesis, University of Cape Town, 1988. http://hdl.handle.net/11427/23306.

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The Etendeka Formation volcanics of north-western Namibia form part of the Karoo Igneous Province of southern Africa and consist of a series of basalts interbedded with quartz latites and minor volumes of latite. This thesis examines various aspects of the geology and geochemistry of the quartz latites, in particular the volcanological and petrogenetic origin of these rocks . This study has involved the geological mapping of ca. 5000 km² of the southern Etendeka region and the documentation of the field and petrographic characteristics of the quartz latites. 183 whole rock quartz latite sample
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13

Weismiller, Heather C. "Sediment Accumulation on Basalt Flows (Jurassic Kalkrand Formation, Namibia)." Ohio University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1338565913.

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14

Petzel, V. "Vein and replacement type Sn and Sn-W mineralization in the Southern Kaoko Zone, Damara Province, South West Africa/Namibia." Thesis, Rhodes University, 1986. http://hdl.handle.net/10962/d1007633.

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The ENE trending Brandberg West - Goantagab Sn-W belt is located in the Southern Kaoko Zone of the northern coastal branch of the Damara Orogen. The lithologies in this area are turbiditic and consist of three schist units separated by two marble horizons, all of which are correlated with the Swakop Group. The formations are intensely folded by at least three episodes of which the first two are coaxial and resulted in prominent, approximately N-S trending, structures. Sn and Sn-W mineralization predominantly occurs as vein and replacement type mineralization. Vein type mineralization occurs as
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15

Clemson, Jon. "Segmentation of the Namibian passive margin." Thesis, Imperial College London, 1997. http://hdl.handle.net/10044/1/8498.

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16

Corbett, Ian Bedford. "The sedimentology of diamondiferous deflation deposits within the Sperrgebiet, Namibia." Doctoral thesis, University of Cape Town, 1989. http://hdl.handle.net/11427/17696.

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Bibliography: p. 420-430.<br>In this thesis the processes that produced diamond placer deposits within closed endoreic basins along the west coast of Namibia are addressed. These deposits, first discovered in 1908, and documented by Kaiser in 1926, occur in an area of wind deflation between latitudes 26 and 28 degrees South. Salt rock weathering and aeolian abrasion has eroded elongated depressions that are up to 120 m deep, that happen to be parallel with the dominant wind flow from the south and south-southeast, which governs aeolian processes in the coastal tract. The velocity of winds from
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17

Siegfried, P. R. "Aspects of the geology of the mountain ore body, Rosh Pinah mine, Namibia." Master's thesis, University of Cape Town, 1990. http://hdl.handle.net/11427/8370.

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Includes bibliography.<br>Directly underlying the ore bodies are zones of stockwork alteration as well as extensive brecciation. The aim of this thesis is to determine the cause of brecciation and its relationship to the ore body and mineralization. Methods of identification include field observations, transmitted and reflected light microscopy, staining and quantitative electron-microprobe analyses, carbonate isotope determination and an extensive literature survey.
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18

Tregoning, Trevor Denzil. "The tectono-metallogenesis during the irumide and pan-African events in South West Africa/Namibia." Thesis, Rhodes University, 1987. http://hdl.handle.net/10962/d1004490.

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A large portion of South west Africa/Namibia is underlain by 2 great orogens. They are the Irumide (Sinclair/Rehoboth) and Damara Orogenies. The L-shaped Irumide Province forms part of a belt which extends over the subcontinent from Namaqualand to as far as Zambia. The volcano-sedimentary sequences of the Irumide are believed to have formed in intracratonic rifts and pull-apart basins during the period 1400 to 900 Ma. The evolution of the NW trending Sinclair Group proceeded by means of 3 major cycles each beginning with the emplacement of basic to intermediate magmas followed by felsic ones.
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19

Whitfield, Derek. "The genesis and controls of gold mineralization south of Rehoboth, Namibia." Thesis, Rhodes University, 1991. http://hdl.handle.net/10962/d1005560.

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Gold mineralization is hosted within gossanous quartz-haematite veins in volcano-sedimentary lithologies of the Klein Aub - Rehoboth basin of the Irumide Belt, Namibia. Mineralization and hydrothermal alteration are restricted to deformed lithologies particularly the metasediments. Lithological relationships, geochemistry and metallogenic characteristics of the Irumide Belt suggest an intra-continental rift setting. Copper mineralization is well known along the length of the belt, from Klein Aub in the southwest to Ghanzi in the northeast, whereas gold mineralization appears restricted to the
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20

Apollus, Leonard. "The distribution of diamonds on a Late Cainozoic gravel beach, southwestern Namibia." Thesis, University of Glasgow, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266459.

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21

Poli, Lucio Colin. "Mid-crustal geodynamics of the southern central zone, Damara Orogen, Namibia." Thesis, University of St Andrews, 1997. http://hdl.handle.net/10023/15573.

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Two areas of well exposed mid-crustal structures in the axial zone of the Pan-African Damaran orogenic belt show that basement has formed domes which have amoeboid forms on the scale of tens of km with steep sided overturned non-planar, non- cylindrical geometry. These are surrounded by open to tight synclinal cover envelopes that converge at depressions between the domes. The domes are found in association with a strong regional WSW moderately plunging lineation. Strain analysis demonstrates that domes have formed in a moderately plunging constrictional field. Structural features which normal
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22

Creus, Pieter Koenraad. "Geology and structural controls of lode-gold mineralisation around the Navachab Gold Mine in the Pan-African Damara Belt of Namibia." Thesis, Stellenbosch : Stellenbosch University, 2011. http://hdl.handle.net/10019.1/17845.

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Thesis (MSc)--Stellenbosch University, 2011.<br>ENGLISH ABSTRACT: Numerous quartz-vein hosted gold prospects in the Karibib district in central Namibia testify to the presence of a large hydrothermal system during Pan-African times in rocks of the Damara Belt and centred around the Navachab Gold Mine. This study presents the results of the regional and detailed mapping of the Navachab synform, a NE-SW trending, regional-scale structure hosting a number of these gold prospects, locally referred to as the “zoo prospects”, in the direct vicinity of the main Navachab Gold Mine. The zoo prospects
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23

Negonga, Lisias. "Geochemistry, stable isotopes and fluid inclusion studies of the Otjikoto gold deposit, Central Namibia." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29190.

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The Otjikoto gold deposit is located within the Damara Orogenic Belt which is part of the system of Pan-African mobile belts. The Damara Belt is a northwest trending orogenic belt which formed through sequences of spreading, rifting, subduction and from continental collision between the Congo, Kalahari and Rio Delta Plata Cratons between 900 Ma and 450 Ma. Mineralisation at Otjikoto is hosted by a group of metamorphic rocks which consist of biotite schists from the Okonguarri Formation, albitites from the Oberwasser member and marble units from the Okawayo member. The gold mineralization occur
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24

McMillan, I. K. "Late Quaternary foraminifera from the southern part of offshore south west Africa/Namibia." Thesis, Aberystwyth University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239620.

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25

Misiewicz, Julian Edward. "The geology and metallogeny of the Otavi mountain land, Damara orogen, SWA/Namibia, with particular reference to the Berg Aukas Zn-Pb-V deposit a model of ore genesis." Thesis, Rhodes University, 1988. http://hdl.handle.net/10962/d1005571.

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The Olavi Mountain Land is a 10 000 km2 mineral province located at the eastern extremity of the exposed Northern Platform of the Damara Pan African orogenic belt. The Olavi Mountain Land is tbe most important mineral province on the Northern Platform. Exploitation of tbe Cu-Pb-Zn-V province has been on-going since the possession of the territory by the German colonial authority in 1890. Production has been mostly from four mines which in order of importance are Tsumeb, Kombat, Berg Aukas and Abeoab. A second mineral province on the Northern Platform located in the west is centred on Sesfontei
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26

Owen, Geoffrey J. "Geology of the Kranzberg syncline and emplacement controls of the Usakos pegmatite field, Damara belt, Namibia." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6743.

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Thesis (MSc (Earth Sciences))--University of Stellenbosch, 2011.<br>ENGLISH ABSTRACT: The Central Zone (CZ) of the Damara belt in central Namibia is underlain by voluminous Pan-African granites and is host to numerous pegmatite occurrences, some of which have economic importance and have been mined extensively. This study discusses the occurrence, geometry, relative timing and emplacement mechanisms for the Usakos pegmatite field, located between the towns of Karibib and Usakos and within the core of the regional-scale Kranzberg syncline. Lithological mapping of the Kuiseb Formation in t
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27

Spriggs, Andrew John. "An isotopic and geochemical study of kimberlites and associated alkaline rocks from Namibia." Thesis, University of Leeds, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327756.

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28

Bagguley, Joanne Gail. "The application of seismic and sequence stratigraphy to the post-rift megasequence offshore Namibia." Thesis, Online version, 1996. http://ethos.bl.uk/OrderDetails.do?did=1&uin=uk.bl.ethos.388958.

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29

Swart, Roger. "The sedimentology of the Zerrissene turbidite system, Damara Orogen, Namibia." Thesis, Rhodes University, 1991. http://hdl.handle.net/10962/d1005613.

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The Zerrissene turbidite system of central-western Namibia is a late Proterozoic sequence which consists of dominantly siliciclastic turbidites interbedded with minor turbiditic and hemipelagic marbles. The basin in which these sediments were deposited is located at the junction of the coastal and intra-cratonic arms of the Pan-African Damara Orogen, and an understanding of the sedimentary evolution of this basin is therefore important to the understanding of the development of the orogen as a whole. One major and two minor phases of folding have deformed the sediments, but the grade of metamo
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30

Runds, Megan Jean. "Sedimentology and depositional environment of a marine target, Southern Namibia: 3D stratigraphic architecture and diamond mineralisation potential." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/28120.

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The world's largest diamond placer lies on the southwestern coast of Namibia, within the restricted area known as the Sperrgebiet, and comprises, amongst others, a series of Plio-Pleistocene to Holocene littoral deposits preserved onshore for >120 km northwards from the Orange River mouth. Through comprehensive seismic and sedimentological analysis, this study provides the first attempt at linking the well-documented onshore diamondiferous deposits of the Sperrgebiet with the submerged landscape of a diamondiferous marine target, called the Purple Target Area (PTA), situated beneath up to 70 m
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31

Chadwick, Peter J. "A study of the berg Aukas-type Pb-Zn-V deposits in the Otavi mountain land, Namibia." Master's thesis, University of Cape Town, 1993. http://hdl.handle.net/11427/22548.

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Bibliography: pages 131-138.<br>This study is focussed on the petrographic and isotopic aspects of the crystallization processes taking place in carbonate-hosted Berg Aukas-type Zn-Pb-V deposits of the Otavi Mountain Land in Northern Namibia. Numerous studies have shown that ore formation in Mississippi Valley-type deposits bears a close relationship with carbonate diagenesis and basin evolution. The application of isotope (Sr , O, C) techniques as regards to timing and mechanisms of ore-forming processes, as a possible tool in exploration, is especially emphasized in this study. Detailed petr
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32

Jacob, Jana. "Late Proterozoic bedrock geology and its influence on neogene littoral marine diamondiferous trapsites, MA1-Sperrgebiet, Namibia." Master's thesis, University of Cape Town, 2001. http://hdl.handle.net/11427/8742.

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Bibliography: leaves 117-128.<br>Namibia's south western coast, the Sperrgebiet, hosts one of the world's largest diamond placer deposits. Diamond distribution in this placer deposit is directly related to the presence of a diamond-carrying gravel, the degree of reworking of the gravel and the quantity and quality of the diamond trapsites. The diamond-carrying gravel is present in the form of palaeo-beaches. Six Plio-Pleistocene beaches have been identified lying onshore between the Orange River mouth and Chameis Bay. The Plio-Pleistocene beaches are underlain by Late Proterozoic footwall. The
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33

Sebetlela, Teboho. "Tectonometamorphic evolution of Medium-P granulites of the Namaqua Metamorphic Province at the Gordonia Subprovince marginal zone, southern Namibia." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/25405.

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The western Namaqua Metamorphic Complex (NMC) is a Mesoproterozoic mediumto low-pressure, high temperature metamorphic belt that is characterised by a complex, polyphase Mesoproterozoic metamorphic history. Using an integrated approach, the P-T-t evolution of a portion of the marginal zone between two major tectonic domains in the western NMC: the Richtersveld and Gordonia Subprovices is investigated, with the aim of resolving a P-T-t path for the peak to retrograde evolution of a major regional thrust, that will in turn help to elucidate its geodynamic significance. The Kum Kum Klippe represe
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34

Chetty, Deshenthree. "Geochemical fingerprinting of carbonate wall rock alteration at major base metal sulphide deposits in the Otavi Mountain Land, Namibia." Master's thesis, University of Cape Town, 1998. http://hdl.handle.net/11427/9555.

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Bibliography: leaves 134-147.<br>The Otavi Mountain Land is a base metal ore province in which base metal sulphide deposits are hosted by platform carbonates in a foreland fold-and-thrust belt on the northern edge of the PanAfrican Damara Belt. Deposits have been classified as the Berg Aukas- and Tsumeb- types, based on differences in ore association, stratigraphic position and geochemistry of ores and gangue carbonates. Mineralisation at each of these deposits is accompanied by carbonate alteration in the form of dolomite and calcite veins, carbonate recrystallisation, calcitisation and carbo
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35

Spaggiari, Renato Igino. "Sedimentology of plio-pleistocene gravel barrier deposits in the palaeo-Orange River mouth, Namibia : depositional history and diamond mineralisation." Thesis, Rhodes University, 2011. http://hdl.handle.net/10962/d1004636.

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The largest known marine diamond placer, the Namibian mega-placer, lies along the Atlantic coast of south-western Africa from the Orange River mouth 1,000 km northwards to the Namibian-Angolan border. The most economically viable portion of the Namibian mega-placer (>75 million carats recovered at >95% gem quality) comprises onshore and offshore marine deposits that are developed within ∼100km of the Orange River outfall. For much of the Cainozoic, this long-lived fluvial system has been the main conduit transporting diamonds from kimberlitic and secondary sources in the cratonic hinterland of
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Silva, Bruno Venancio da. "Evolução termocronológica da região à leste da bacia offshore do Namibe, Angola, por meio de traço de fissão E (U-TH)HE em Apatitas /." Rio Claro, 2016. http://hdl.handle.net/11449/140291.

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Orientador: Peter Christian Hackspacher<br>Coorientadora: Marli Carina Siqueira Ribeiro<br>Banca: Ana Olivia Barufi Franco-Magalhães<br>Banca: Daniel Françoso de Godoy<br>Resumo: A termocronologia de baixa temperatura tem sido uma ferramenta importante para a quantificação de processos geológicos em margens continentais passivas. Neste contexto, a margem angolana mostra evidências de uma evolução pós-rifte policíclica marcada por eventos de soerguimento, inversão de bacias e mudanças nas taxas de sedimentação para as bacias marginais, os quais têm controlado a tectônica salina e a localização
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37

Vietze, Martin Ernst. "Geology and emplacement controls of the Stinkbank granite in the south Central Zone of the Pan-African Damara Belt, Namibia." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4271.

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Thesis (MSc (Earth Sciences))--University of Stellenbosch, 2010.<br>ENGLISH SUMMARY: Regional mapping of the Stinkbank granite in the south Central Zone of the Damara Belt, focused on an area of ca. 150 km2 in the SW parts of the granite along well exposed sections of the Khan River to the SW of the town of Usakos. The granite forms part of the regionally widespread granite suite of Salem-type granites that intruded at ca. 550-540 Ma into amphibolite-facies rocks of the Damara Supergroup. The Stinkbank granite is intrusive into the regional-scale, NE-trending D2 Kransberg syncline, cored by sc
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Boudreaux, Andrew P. "Mineralogy and geochemistry of the Erongo Granite and interior quartz-tourmaline orbicules and NYF-type miarolitic pegmatites, Namibia." ScholarWorks@UNO, 2014. http://scholarworks.uno.edu/td/1854.

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The early Cretaceous anorogenic Erongo Granite of Namibia is known to host abundant boron mineralization in rounded, quartz-tourmaline clusters and in NYF-type miarolitic, pegmatitic cavities. Rock and mineral samples were taken from the bulk granite, tourmaline nests, and miarolitic cavities and analyzed using a variety of modern analytical techniques. Geochemical and mineralogical data suggest substantial input from the metasedimentary rocks of the Damara orogen was important in the genesis of the Erongo Granite magma. The geochemical signature of the Damara orogen is most evident in the tou
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Lewis, Corbin Robert. "Linear Dune Morphometrics in Titan’s Belet Sand Sea and a Comparison with the Namib Sand Sea." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7688.

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Despite atmospheric and compositional differences on Titan and Earth, the similarity in the shape and spacing of linear dunes of the Belet Sand Sea of Titan and the Namib Sand Sea of Earth suggests that comparisons will yield a better understanding of the dictating factors of duneforming processes. We present a methodology for the collection of dune width and spacing measurements representative of the Namib and Belet sand seas. 94,304 locations in Belet from Cassini SAR images and 5,563 locations in the Namib from IKONOS images are used for measurements. The average width and spacing of linear
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40

Lambert, Christopher William. "Granitic melt transport and emplacement along transcurrent shear zones : case study of the Pofadder Shear Zone in South Africa and Namibia." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85682.

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Thesis (MSc)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: The close spatial and temporal relationship of shear-zones and magmas is commonly interpreted to indicate positive feedback between magma migration, granitic emplacement and shear-zone-associated deformation. Emplacement geometries and structural fabrics are however rarely preserved, hampering the study of shear-zones and granitic magmas interactions. This study focuses on an area around the Pofadder Shear Zone (PSZ) in Namibia and South Africa as a case study for granitic bodies, mainly as pegmatite sills and dykes, and th
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Rowell, Alexandra. "Sand ramps as late Quaternary palaeoenvironmental archives : analysis from southern Africa." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:ce5b7e85-41a6-4582-96bb-12e74284e1e6.

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Sand ramps are widespread but understudied landforms which have the potential to provide detailed palaeoenvironmental information in dryland regions. This thesis investigates the utility of sand ramps as late Quaternary palaeoenvironmental archives by addressing two research questions: (1) What are the main controls on sand ramp formation in southern Africa? (2) What does the sand ramp record tell us about late Quaternary palaeoenvironments in southern Africa? The distribution of sand ramps in southern Africa was surveyed using Google Earth™ and 75 features were identified in southern Namibia.
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42

Anthonissen, Christoffel Jasper. "The mid-crustal architecture of a continental arc - a transect through the South Central Zone of the Pan-African Damara Belt, Namibia." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4172.

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Thesis (MSc (Earth Sciences))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: The NE-trending South Central Zone of the Pan-African (ca. 550-500) Damara orogen in central Namibia exposes deeply eroded mid-crustal rocks, thought to represent the magmatic arc of the Damara orogen. Above average exposure of outcrop left unmodified by subsequent post-orogenic processes made it possible to study the internal architecture of a ca. 50km traverse, stretching from the continental suture-zone (between the Congo craton in the NW and the underplating Kalahari craton in the SE) at the Okahandj
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43

Blancher, Simon. "Le cœur alcalin du complexe du Messum, Namibie : Description pétrologique, interprétation de l'évolution minéralogique et relations roches sous- et sur-saturées en silice." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2008. http://tel.archives-ouvertes.fr/tel-00336485.

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Le complexe anorogénique annulaire du Messum, associé à la province basaltique de l'Etendeka (Namibie), montre la coexistence de roches sous- et sur-saturées en silice. Une étude pétrologique détaillée est nécessaire pour comprendre l'évolution minéralogique de ces deux ensembles de roches. Dans le premier, l'ensemble des observations a permis de proposer une route de cristallisation mettant en jeu des lignes péritectiques et expliquant le développement de la néphéline tardivement aux dépens des phases précoces (olivine, plagioclase, clinopyroxène alumineux) et la signification intermédiaire d
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44

gomez, cecile. "Potentiels des données de télédétection multisources pour la cartographie géologique : Application à la région de Rehoboth (Namibie)." Phd thesis, Université Claude Bernard - Lyon I, 2004. http://tel.archives-ouvertes.fr/tel-00008556.

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Les données de télédétection dans le domaine du Visible, de l'Infrarouge et du rayonnement Gamma ont un potentiel pour la cartographie géologique. Ce potentiel est évalué sur l'exemple de la carte géologique de Rehoboth, zone semi aride de Namibie en contexte sédimentaire. Une méthode de détermination des contours géologiques a été mise au point à partir d'une combinaison de données multispectrales ASTER (3 bandes dans le Visible, 6 bandes dans l'Infrarouge Moyen), de données hyperspectrales HYPERION (242 bandes du visible à l'Infrarouge Moyen) et de données de rayonnement Gamma (K, U, Th). Ce
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45

Chandler, Clayton K. "Superimposed and Auxiliary Dunes of the Northern Namib Sand Sea: a Ground-Penetrating Radar Study." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5636.

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Understanding modern features allows for their use as analogues for understanding the environments of the past and even environments on other planetary bodies. This study uses Ground-Penetrating Radar (GPR) to image the near surface sedimentary structures on a large linear dune in the northern Namib Sand Sea and image the sedimentary structure of an auxiliary dune. GPR data was collected using a 200 MHz antenna with a continuous scan method and was processed by removing direct arrival, gain balancing, migration and more which produced the highest resolution imagery from this region to date. La
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46

Gomez, Cécile. "Potentiels des données de télédétection multisources pour la cartographie géologique : Application à la région de Rehoboth (Namibie)." Phd thesis, Université Claude Bernard - Lyon I, 2004. http://tel.archives-ouvertes.fr/tel-00665112.

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Les données de télédétection dans le domaine du Visible, de l'Infrarouge et du rayonnement Gamma ont un potentiel pour la cartographie géologique. Ce potentiel est évalué sur l'exemple de la carte géologique de Rehoboth, zone semi aride de Namibie en contexte sédimentaire. Une méthode de détermination des contours géologiques a été mise au point à partir d'une combinaison de données multispectrales ASTER (3 bandes dans le Visible, 6 bandes dans l'Infrarouge Moyen), de données hyperspectrales HYPERION (242 bandes du visible à l'Infrarouge Moyen) et de données de rayonnement Gamma (K, U, Th). Ce
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47

Jasper, Marold Jens Uwe. "Sedimentology and structural geology of the Gariep belt in Southern Namibia." Thesis, 1994. https://hdl.handle.net/10539/25466.

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A Dissertation Submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg, in Fulfilment of the Requirements of the Degree of Doctor of Philosophy.<br>The Gariep Belt is an arcuate north-south trending tectonic unit extending ;along the western coast of southern Namibia and northwestern South Africa. It forms part of the Pan-African Damara Oragert, which consists of a north-south trending coastal branch (Kaoko and Gariep Belts) and an east-west trending inland branch. The Gariep Belt is subdivided into an eastern parautochthonous passive continental margin on the
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48

King, Clive Howard Matthew. "The geology of the Tsumeb carbonate sequence and associated lead-zinc occurrences on the farm Olifantsfontein, Otavi Mountainland, Namibia." Thesis, 2014. http://hdl.handle.net/10210/11704.

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Ashworth, Luisa. "Mineralised pegmatites of the Damara Belt, Namibia: fluid inclusion and geochemical characteristics with implications for post-collisional mineralisation." Thesis, 2014. http://hdl.handle.net/10539/15064.

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A dissertation submitted to the Faculty of Science, University of the Witwatersrand, in fulfilment of the requirements for the degree of Doctor of Philosophy, Johannesburg 2014<br>Namibia is renowned for its abundant mineral resources, a large proportion of which are hosted in the metasedimentary lithologies of the Damara Belt, the northeast-trending inland branch of the Neoproterozoic Pan-African Damara Orogen. Deposit types include late- to post-tectonic (~ 523 – 506 Ma) LCT (Li-Be, Sn-, and miarolitic gem-tourmalinebearing) pegmatites, and uraniferous pegmatitic sheeted leucogranites (S
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Hughes, Martin James. "The Tsumeb ore body, Namibia, and related dolostone-hosted base metal ore deposits of Central Africa." Thesis, 2013. http://hdl.handle.net/10539/13037.

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