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Basalt geochemistry and tectonic discrimination within continental flood basalt provinces

- Marsh, Julian S

  • Authors: Marsh, Julian S
  • Date: 2003
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/140412 , vital:37886 , https://doi.org/10.1016/0377-0273(87)90035-7
  • Description: Continental flood basalts are usually regarded as a single tectonomagmatic entity but frequently quoted examples exhibit a variety of tectonic settings. In one well-studied, classic, flood basalt province, the Mesozoic Karoo province of southern Africa, magmatism occurred in the following tectonic settings: (a) continental rifting leading to ocean-floor spreading in the South Atlantic Ocean (Etendeka suite of Namibia); (b) stretched continental lithosphere and rifting not leading directly to ocean-floor formation (Lebombo suite of southeastern Africa); and (c) an a-tectonic, within-plate, continental setting characterized by an absence of faulting or warping (Lesotho highlands and Karoo dolerites of South Africa).
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  • Date Issued: 2003

Evolution of a strongly differentiated suite of phonolites from the Klinghardt Mountains, Namibia

- Marsh, Julian S

  • Authors: Marsh, Julian S
  • Date: 2003
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/140400 , vital:37885 , https://doi.org/10.1016/0024-4937(87)90023-5
  • Description: Phonolites of Tertiary age occur as eroded tholoids, lava flows, ignimbrites, and coulees in the Klinghardt Mountains of southern Namibia. Sixty samples have been analyzed for major and trace elements and fourteen of these for 87SR 86SR. The phonolites lie close to the low-pressure cotectics in Q-Ne-Ks, in keeping with their petrography which indicates that most samples have phenocrysts of both nepheline and sanidine. Na has been variably lost from the rocks during crystallization and devitrification/alteration of hypocrystalline specimens.
  • Full Text: false
  • Date Issued: 2003

Records of the inquest into the murder of Matthew Goniwe, Sparrow Mkonto, Fort Calata and Sicelo Mhlauli near Port Elizabeth on 21 June 1985

Halaelurus clevai, sp. n., a new species of catshark (Scyliorhinidae) from off Madagascar, with remarks on the taxonomic status of the genera Halaelurus gill and Galeus rafinesque

- Seret, Bernard, J.L.B. Smith Institute of Ichthyology

  • Authors: Seret, Bernard , J.L.B. Smith Institute of Ichthyology
  • Date: 1987-08
  • Subjects: Halaelurus -- Madagascar , Scyliorhinidae -- Madagascar
  • Language: English
  • Type: text , book
  • Identifier: http://hdl.handle.net/10962/70269 , vital:29640 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
  • Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 44 , Fifteen specimens of a new catshark were trawled during a shrimp fishery survey off Tulear, Madagascar. The new species is described, illustrated and compared with other species of Halaelurus. The taxonomic status of the genera Halaelurus and Galeus is discussed.
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  • Date Issued: 1987-08

The fishes of the genus Bathylagus of the Southern Ocean

- Gon, O (Ofer), 1949-, J.L.B. Smith Institute of Ichthyology

  • Authors: Gon, O (Ofer), 1949- , J.L.B. Smith Institute of Ichthyology
  • Date: 1987-08
  • Subjects: Bathylagidae , Fishes -- Antarctic Ocean
  • Language: English
  • Type: text , book
  • Identifier: http://hdl.handle.net/10962/70258 , vital:29639 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
  • Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 43 , In his revision of the genus Bathylagus, Norman (1930) recognized five species from the Southern Ocean. The taxonomic status of these species is re-evaluated by using morphometric data and the number of vertebrae, anal fin rays, gill-rakers, lateral scale series and pyloric caeca. Principle component analysis was carried out in support of species separation, using selected body proportions. Three species, namely B. antarcticus, B. gracilis and B. tenuis, are recognized here. B. gracilis and B. euryops latifrons, both described by Lonnberg, 1905, were found to be synonymous. A key to the species of Bathylagus in the Southern Ocean is provided.
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  • Date Issued: 1987-08

Action notes: No. 3: Workshops

- Human Awareness Programme

  • Authors: Human Awareness Programme
  • Date: 1987-06
  • Subjects: Nonprofit organizations -- Management
  • Language: English
  • Type: instruction , text
  • Identifier: http://hdl.handle.net/10962/60179 , vital:27744 , ISBN 0-620-11064-3
  • Description: This pamphlet will help you to plan a workshop. It looks at planning the content as well as the practical arrangements for the workshop. There are many reasons for having a workshop. They could include: teaching your activists a skill, like running meetings or producing media; analysing a new political development e.g. an election or a new law; planning a programme of action or a campaign; evaluating the work you have done in the past year, or the work you have done for a campaign; sorting out internal problem like structures that are not appropriate or a break down in working relationships. Whatever the reason for your workshop, you need to make sure that the aim is clear right from the start. Before you begin planning, you need to sort out exactly why you are having the workshop and what you hope to achieve by having the workshop. If your aim is clear, you can go ahead with the planning. This pamphlet is about planning a workshop ONCE YOU KNOW WHAT YOU HOPE TO ACHIEVE.
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  • Date Issued: 1987-06

LACOM News, no. 3, May 1987

- LACOM (Sached Trust)

  • Authors: LACOM (Sached Trust)
  • Date: 1987-05
  • Language: English
  • Type: Newsletter , text
  • Identifier: http://hdl.handle.net/10962/60168 , vital:27743
  • Description: At the national meeting of LACOM held in East London in May, a decision was taken that LACOM should produce its own newsletter. I he newsletter would be produced about tour times a year. The different branches would take responsibility for editing each edition of the newsletter. All branches would be responsible for submitting material to the editing branch by a required date. The aim of the newsletter was said to be: a) to provide a forum for open debate and of self-criticism and evaluation; b) to discuss some of the concrete problems facing the project; c) to raise more general and topical issues related to the practice of education; d) to include general information and news. This first newsletter was produced by the Durban branch of LACOM. Contributions were received from the Western Cape, Eastern Cape and Natal Region.
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  • Date Issued: 1987-05

The cardinal fishes (Perciformes: Apogonidae) collected in the Maldive Islands during the Xarifa expedition (1957/58)

- Gon, O (Ofer), 1949-, J.L.B. Smith Institute of Ichthyology

  • Authors: Gon, O (Ofer), 1949- , J.L.B. Smith Institute of Ichthyology
  • Date: 1987-03
  • Subjects: Xarifa Expedition (1957-1958) , Cardinalfishes -- Maldives
  • Language: English
  • Type: text , book
  • Identifier: http://hdl.handle.net/10962/70247 , vital:29638 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
  • Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 42 , Fifteen species of apogonid fishes were collected in the Maidive Islands during the Xarifa Expedition (1957/58): Apogon abrogramma; A. cyanosoma; A. guamensis; A. kallopterus; A. moluccensis; A. savayensis; A. taeniophorus; Archamia fucata; Cheilodipterus lineatus; C. macrodon; Fowleria aurita; Neamia octospina; Pseudamia gelatinosa; Rhabdamia cypselura; R. gracilis. Each species is treated with a diagnosis, colour description (in preservative) and taxonomic remarks.
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  • Date Issued: 1987-03

"All vistas close in the unseen" : a study of the transcendent in the fiction of E. M. Forster

- Butler, Ian

  • Authors: Butler, Ian
  • Date: 1987
  • Subjects: Forster, E. M. (Edward Morgan), 1879-1970 -- Criticism and interpretation , Forster, E. M. (Edward Morgan), 1879-1970
  • Language: English
  • Type: text , Thesis , Masters , MA
  • Identifier: vital:2175 , http://hdl.handle.net/10962/d1001826
  • Description: From introduction: It has become something of a commonplace among critics to remark Forster's relative lack of success in offering an alternative to the world which he satirises with such wit and humour. His comic treatment of the suburban absurdities of the Edwardian Englishman is, on the whole, far more compelling and memorable than the often vague, symbolic gestures by means of which he implies the possibility of something better. With the exception of his last and greatest novel, A Passage to India, his "alternatives" are largely factitious and contrived. Worse, the reader senses a fundamental uncertainty on the part of the author: his characteristic ambivalence in itself an indication of a perceptive and discriminating mind -- all too often suggests lack of conviction rather than an intelligent awareness of the infinitude of human possibilities.
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  • Date Issued: 1987

"Chimurenga" 1896-1897: a revisionist study

- Horn, Mark Philip Malcolm

  • Authors: Horn, Mark Philip Malcolm
  • Date: 1987
  • Subjects: National liberation movements -- Zimbabwe , Political violence -- Zimbabwe , Zimbabwe -- Politics and government -- 1980- , Zimbabwe -- History -- Chimurenga War, 1966-1980
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2546 , http://hdl.handle.net/10962/d1002398 , National liberation movements -- Zimbabwe , Political violence -- Zimbabwe , Zimbabwe -- Politics and government -- 1980- , Zimbabwe -- History -- Chimurenga War, 1966-1980
  • Description: There were no "Rebellions" in 1896-7. The concept of "risings" which is to be found in the European perspective of the escalated violence has distorted an understanding of the complex nature of the events. The events of 1896-7 must rather be explained through an examination of the details of the conflict. European pressure on the African people prior to 1896 was minimal and cannot be assumed to be the "cause" of the first "Chimurenga". There was no planned, organised or coordinated "rebellion" in Matabeleland in March 1896. Further, no distinction can be made between a "March" rebellion in Matabeleland and a June "rebellion" in Mashonaland. A European war of conquest in 1896-7 evoked the responce known now as the first "Chimurenga". It was the war of conquest of 1896-7 which saw the ascendancy of the European perspective over the African and thereby established the psychological foundations of the Rhodesian colonial state. The complex nature of the events of 1896-7 is to be understood through an appreciation of the different perspectives of those who became embroiled in the conflict.
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  • Date Issued: 1987

2nd March 1965

- Monwabisi Gladstone Sabani, Tracey, Andrew T N

A Christmas card

- Monwabisi Gladstone Sabani, Tracey, Andrew T N

A comparison of nesting behaviour and prey selection in some Southern African species of Ammophila (Hymenoptera : Sphecidae)

- Weaving, Alan James Shelley

  • Authors: Weaving, Alan James Shelley
  • Date: 1987
  • Subjects: Hymenoptera
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:5600 , http://hdl.handle.net/10962/d1002050
  • Description: Nesting behaviour and prey selection was compared in eight species of Ammophila. The frequent sympatry of these species was a central point of interest in the study. Nest siting differed markedly in several species. A. ferrugineipes, A. dolichodera, A. dolichocephala and, probably, A. conifera nested mostly in open habitats, this being regarded as the most common situation for the majority of Ammophila. A. beniniensis was unusual in nesting in well vegetated habitats, A. vulcania doing so amongst small clumps of vegetation in otherwise open habitats. A. insignis nested in vertical banks or old animal burrows and A. braunsi utilised abandoned burrows of other wasps situated in non-friable clay soils. This is the first time such nest siting has been reported for Ammophila and each of these two species is consequently unique. Many aspects of nest construction behaviour, in particular methods of soil waste disposal, sealing of nests and their final coverage, differed interspecifically, in some cases intraspecifically, but often apparently in response to the habitat. With regard to nest provisioning strategies, all species hunted after digging their nests, except A. dolichodera which is the first Afrotropical Ammophila reported to hunt before excavating its nest. This brings the total number of the world's species of Ammophila showing this behaviour to three. This species, A. beniniensis, A. braunsi and A. vulcania provided one caterpillar per nest; the others supplied several, A. insignis being the only mass provisioner. A. ferrugineipes showed a form of progressive provisioning and maintained several nests at a time; it is the only Afrotropical species known so far to do so. Only two extra-limital species have been reported showing similar behaviour. The observed variations in provisioning strategies can most easily be explained in relation to the habitat. Investigation of prey selection showed that there was very little interspecific overlap in the species of caterpillars used for provisioning nests. This was shown to be due mainly to differing hunting habitat preferences. The various overall patterns of nesting behaviour, and variations in the different components within these patterns, were considered most likely to have resulted from allopatric speciation in different types of vegetation, the more advanced patterns arising in open habitats. The frequent occurrence of sympatry appears to be a reflection of a shifting distribution of mosaic patterns of vegetation types and the post-speciation spread of species. This influence of habitat on behaviour and prey selection has emphasised the need for caution in drawing phylogenetic conclusions from ethology. Further, these considerations provide an alternative to competition in attempting to explain the observed behaviour patterns and distribution of these wasps.
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  • Date Issued: 1987

A dream come true

- Monwabisi Gladstone Sabani, Tracey, Andrew T N

A few silver coins is what they need

- Monwabisi Gladstone Sabani, Tracey, Andrew T N

A geological model of shear zone gold deposits in the Pietersburg Greenstone Belt, South Africa

- Franey, N J

  • Authors: Franey, N J
  • Date: 1987 , 2013-04-17
  • Subjects: Greenstone belts -- South Africa , Gold ores -- Geology -- South Africa
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:5032 , http://hdl.handle.net/10962/d1007190 , Greenstone belts -- South Africa , Gold ores -- Geology -- South Africa
  • Description: The Pletersburg greenstone belt Is located In South Africa, about 300 km northeast of Johannesburg. It hosts a significant amount of gold mineralization and just over 1000 kg of gold have been produced from Its various reefs and secondary deposits. The greenstone belt is interpreted as an Archean ophiolite complex. It comprlses a volcano-sedimentary succession (the Pletersburg Group) which Is subdivided Into a basal greenstone sequence, interpreted as oceanic crust, and an upper sedimentary cover sequence. A number of major shear zones, which are thought to represent thrusts that developed during the subduction of the greenstone sequence, form an integral part of the stratigraphy . Four stages of deformation (D₁-D₄) and four phases of metamorphism (H₁-H₄) (three of which are correlatable with the peak stages of deformation) are recognized. The primary gold deposits are all shear zones related. but they are subdivided into greenstone, sedimentation and granIte-hosted types. Geographically, they occur In three distinct goldfields: Eerstellng, Roodepoort and Marbastad. The greenstone-hosted · Plenaar-Doreen shear complex Is In the Eersteiing goldfield and hosts eight gold occurrences. Within the complex, Girlie North Reef is the 640m-long "pay" section of the Girlie North shear zone. This reef is characterized, macroscopically, by a Quartz-carbonate-chlorite-sulphlde assemblage and, mlcroscoplcally, by the presence of tourmaline, arsenopyrlte and Au. Geochemical evidence Indicates that mineralizing fluids were H₂O and CO₂-bearing and rich In S, K and Al. The wall rock alteratlon was Isochemlcal but Is manifest as a change In mineralogy from a hornblende + plagioclase assemblage to an actlnollte/tremollte + Quartz + clay assemblage. This Is best developed In the hangIng wall of the reef and is thought to have been caused by hydrogen ion metasomatism. The Arsenopyrite Reef was one of the main sediment-hosted shear zone gold producers In the Harabastad goldfield. This reef Is Interpreted as the basal margin of a shear zone whose top contact Is probably represented by the Quartz Vein Reef. The shear zone consists predomonantly of quartz and carbonate, and the two "pay" reefs are characterized by tourmallne. arsenopyrite and Au. No wall rock alteration was identified In this study, Based on the mineralogy and geochemical signature of the Girlie Nortn Reef and the Arsenopyrite Reef, It Is proposed that both were formed at the $The Pletersburg greenstone belt Is located In South Africa, about 300 km northeast of Johannesburg. It hosts a significant amount of gold mineralization and just over 1000 kg of gold have been produced from Its various reefs and secondary deposits. The greenstone belt is interpreted as an Archean ophiolite complex. It comprlses a volcano-sedimentary succession (the Pletersburg Group) which Is subdivided Into a basal greenstone sequence, interpreted as oceanic crust, and an upper sedimentary cover sequence. A number of major shear zones, which are thought to represent thrusts that developed during the subduction of the greenstone sequence, form an integral part of the stratigraphy . Four stages of deformation (D₁-D₄) and four phases of metamorphism (H₁-H₄) (three of which are correlatable with the peak stages of deformation) are recognized. The primary gold deposits are all shear zones related. but they are subdivided into greenstone, sedimentation and granIte-hosted types. Geographically, they occur In three distinct goldfields: Eerstellng, Roodepoort and Marbastad. The greenstone-hosted · Plenaar-Doreen shear complex Is In the Eersteiing goldfield and hosts eight gold occurrences. Within the complex, Girlie North Reef is the 640m-long "pay" section of the Girlie North shear zone. This reef is characterized, macroscopically, by a Quartz-carbonate-chlorite-sulphlde assemblage and, mlcroscoplcally, by the presence of tourmaline, arsenopyrlte and Au. Geochemical evidence Indicates that mineralizing fluids were H₂O and CO₂-bearing and rich In S, K and Al. The wall rock alteratlon was Isochemlcal but Is manifest as a change In mineralogy from a hornblende + plagioclase assemblage to an actlnollte/tremollte + Quartz + clay assemblage. This Is best developed In the hangIng wall of the reef and is thought to have been caused by hydrogen ion metasomatism. The Arsenopyrite Reef was one of the main sediment-hosted shear zone gold producers In the Harabastad goldfield. This reef Is Interpreted as the basal margin of a shear zone whose top contact Is probably represented by the Quartz Vein Reef. The shear zone consists predomonantly of quartz and carbonate, and the two "pay" reefs are characterized by tourmallne. arsenopyrite and Au. No wall rock alteration was identified In this study, Based on the mineralogy and geochemical signature of the Girlie Nortn Reef and the Arsenopyrite Reef, It Is proposed that both were formed at the same time. Textural evidence Indicates that tourmaline, arsenopyrite and Au were all very late In the paragenesis of minerallzatlon. The presence of tourmaline also Indicates a probable granite association. It Is proposed that the maln gold mineralizing event was synchronous with the Intrusion of granitoids (and therefore also with (D₁-D₄) and (H₁-H₄) and that most of the Au was derived from felsic magma. Gold was partitioned Into a magmatic hydrothermal fluid and then transported into the greenstone belt as a chlorIde complex. These magmatiC fluids were channelled up shear zones whIch had already been mineralized with a quartz-carbonate-chlorlte - sulphide assemblage by previous metamorphic fluidS. generated during the dynamic (D₂-related) H₂-phase of metamorphism. The Au was then deposIted as the result of a change In a fluid variable, such as temperature, pH, f0₂, or the activity of Cl (some Au may have been transported In a sulphur complex and so the activity of reduced 5 could also have been Important).
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  • Date Issued: 1987

A hydrogeological assessment of the Uitenhage-Kuils River area, Cape Province, South Africa

- Bush, Richard Alan

A machine-independent microprogram development system

- Ward, Michael John

  • Authors: Ward, Michael John
  • Date: 1987 , 2013-03-11
  • Subjects: Microprogramming
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4581 , http://hdl.handle.net/10962/d1003738 , Microprogramming
  • Description: The aims of this project are twofold. They are firstly, to implement a microprogram development system that allows the programmer to write microcode for any microprogrammable machine, and secondly, to build a microprogrammable machine, incorporating the user friendliness of a simulator, while still providing the 'hands on' experience obtained actual hardware. Microprogram development involves a two stage process. The first step is to describe the target machine, using format descriptions and mnemonic-based template definitions. The second stage involves using the defined mnemonics to write the microcodes for the target machine. This includes an assembly phase to translate the mnemonics into the binary microinstructions. Three main components constitute the microprogrammable machine. The Arithmetic and Logic Unit (ALU) is built using chips from Advanced Micro Devices' Am29ØØ bit-slice family, the action of the Microprogram Control Unit (MCU) is simulated by software running on an IBM Personal Computer, and a section of the IBM PC's main memory acts as the Control Store (CS) for the system. The ALU is built on a prototyping card that plugs into one of the slots on the IBM PC's mother board. A hardware simulator program, that produces the effect of the ALU, has also been developed. A small assembly language has been developed using the system, to test the various functions of the system. A mini-assembler has also been written to facilitate assembly of the above language. A group of honours students at Rhodes University tested the microprogram development system. Their ideas and suggestions have been tabulated in this report and some of them have been used to enhance the system's performance. The concept of allowing 'inline' microinstructions in the macroprogram is also investigated in this report and a method of implementing this is shown.
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  • Date Issued: 1987

A phenomenological investigation of the beginning therapist's experience of the first session of psychotherapy with the first patient

- Allen, Jennifer Ann

  • Authors: Allen, Jennifer Ann
  • Date: 1987
  • Subjects: Uncatalogued
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10962/193129 , vital:45301
  • Description: The aim of this project is to come to an understanding of how the situation of the first session of psychotherapy with the first patient is lived by the beginning therapist and what meaning this situation holds for him. The writer's interest in this phenomenon grew out of her own experience of this situation as a clinical Masters coursework student, an experience which was of important to the writer and meaningful still as a therapist in training. In dialogue with experienced therapists the importance of this situation was again made apparant. It was the opinion of these therapists that although for some the details of this experience had become dulled by time, what remained meaningful to them was that this experience was seen as the beginning of a project which remains important to them - they identified this situation as an important moment in the history of their development as psychotherapists. In the hope that the literature pertaining to psychotherapy would throw some light on this situation, the writer turned to a number of sources in this area to discover that no literature available to her elucidated this situation in a holistic manner. This led the writer to go back to the beginning therapists themselves so that they may speak for themselves of their experience of this situation. A phenomenological method of enquiry is implemented in this study as it renders the subject matter accessible to investigation, and allows it to reveal itself as it essentially is. This project is then an attempt to come to a general description of the beginning therapist's experience of the first session of psychotherapy with the first patient and thus to articulate the structure of the beginning therapist's lived situation (world) in this context. , Thesis (MA) -- Faculty of Humanities, Psychology, 1987
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  • Date Issued: 1987

A poor African

- Monwabisi Gladstone Sabani, Tracey, Andrew T N

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