A preliminary investigation into the effectiveness of the N.E.D. careers education programme in promoting career maturity in high school pupils
- Authors: Delport, Juan Phillippe
- Date: 1987
- Subjects: Career education -- South Africa -- KwaZulu-Natal Vocational guidance -- South Africa -- KwaZulu-Natal
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1911 , http://hdl.handle.net/10962/d1007080
- Description: A developmental paradigm was adopted as a theoretical base from which the effectiveness of the Natal Education Department Career Education lesson-guide in promoting career maturity amongst high school pupils was investigated. It was argued that careers education embodies a distinctive approach to careers work. This approach is described. South African Careers Guidance practices are evaluated in terms of fit, and are compared to American and British ones. To investigate the outcomes of the NED lesson guide, 160 predominantly white, male and female pupils in Standards 6 - 10 were randanly divided into control and experimental grotps and underwent a six session classroom based careers education programme. In addition to the NED material,alternative materials (CRIC - Std. 7 and CRAC - Std. 9) were used on a second experimental group in two standards. The Career Maturity Inventory Attitude Scale was used to measure the outcomes. Analysis of variance and t-tests for the difference between means were used to analyse the data. The results were significant only in Standard 8. For all the other standards with all the materials, they were insignificant. Reasons for and implications of these findings are discussed.
- Full Text:
- Date Issued: 1987
- Authors: Delport, Juan Phillippe
- Date: 1987
- Subjects: Career education -- South Africa -- KwaZulu-Natal Vocational guidance -- South Africa -- KwaZulu-Natal
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1911 , http://hdl.handle.net/10962/d1007080
- Description: A developmental paradigm was adopted as a theoretical base from which the effectiveness of the Natal Education Department Career Education lesson-guide in promoting career maturity amongst high school pupils was investigated. It was argued that careers education embodies a distinctive approach to careers work. This approach is described. South African Careers Guidance practices are evaluated in terms of fit, and are compared to American and British ones. To investigate the outcomes of the NED lesson guide, 160 predominantly white, male and female pupils in Standards 6 - 10 were randanly divided into control and experimental grotps and underwent a six session classroom based careers education programme. In addition to the NED material,alternative materials (CRIC - Std. 7 and CRAC - Std. 9) were used on a second experimental group in two standards. The Career Maturity Inventory Attitude Scale was used to measure the outcomes. Analysis of variance and t-tests for the difference between means were used to analyse the data. The results were significant only in Standard 8. For all the other standards with all the materials, they were insignificant. Reasons for and implications of these findings are discussed.
- Full Text:
- Date Issued: 1987
The origins, development and demise of the South African Indian Council 1964-1983 : a sociological interpretation
- Authors: Desai, Ashwin
- Date: 1987
- Subjects: South African Indian Council -- History
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3349 , http://hdl.handle.net/10962/d1007082 , South African Indian Council -- History
- Description: It was the actions of the Congress Alliance that dominated the political activity of the dominated classes in the 1950s. Mobilising across class and colour lines, the actions of the Congress Alliance had witnessed a growing unity between the leading political organisations of the Indian, African and Coloured dominated classes. However just as quickly as it appeared, the Congress Alliance disappeared from the poitical scene, crushed by the state's repressive apparatus. The state, in order to ensure that the extra-parliamentary opposition characteristic of the 1950s did not once again re-emerge, sought to divide the dominated classes more systematically along ethnic and racial lines by creating mechanisms for the implementation of the policy of separate development. It is within this context that the Promotion of Bantu-Self-Government Act of 1959 was passed and the Coloured Persons' Representative Council (CRC) and the ' South African Indian Council (SAIC) were established. Whilst the history of Indian political organisations in the pre-1960 period has been extensively researched, no in-depth study of the SAIC has been made. Probably the main reason for this area being under-researched, has been the inability of researchers to gain access to information on the SAlC, especially of the period covering the early years of the organisation’ s existence. This study aims to fill this vacuum by utilizing in the main previously unused minutes of the SAlC from 1964 to 1977 together with numerous documents and memoranda presented to the South African government by SAlC delegations in the aforementioned period.
- Full Text:
- Date Issued: 1987
- Authors: Desai, Ashwin
- Date: 1987
- Subjects: South African Indian Council -- History
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3349 , http://hdl.handle.net/10962/d1007082 , South African Indian Council -- History
- Description: It was the actions of the Congress Alliance that dominated the political activity of the dominated classes in the 1950s. Mobilising across class and colour lines, the actions of the Congress Alliance had witnessed a growing unity between the leading political organisations of the Indian, African and Coloured dominated classes. However just as quickly as it appeared, the Congress Alliance disappeared from the poitical scene, crushed by the state's repressive apparatus. The state, in order to ensure that the extra-parliamentary opposition characteristic of the 1950s did not once again re-emerge, sought to divide the dominated classes more systematically along ethnic and racial lines by creating mechanisms for the implementation of the policy of separate development. It is within this context that the Promotion of Bantu-Self-Government Act of 1959 was passed and the Coloured Persons' Representative Council (CRC) and the ' South African Indian Council (SAIC) were established. Whilst the history of Indian political organisations in the pre-1960 period has been extensively researched, no in-depth study of the SAIC has been made. Probably the main reason for this area being under-researched, has been the inability of researchers to gain access to information on the SAlC, especially of the period covering the early years of the organisation’ s existence. This study aims to fill this vacuum by utilizing in the main previously unused minutes of the SAlC from 1964 to 1977 together with numerous documents and memoranda presented to the South African government by SAlC delegations in the aforementioned period.
- Full Text:
- Date Issued: 1987
Pharmacokinetics of phenylpropanolamine in humans after a single dose study
- Dowse, Roslind, Haigh, John M, Kanfer, Isadore
- Authors: Dowse, Roslind , Haigh, John M , Kanfer, Isadore
- Date: 1987
- Language: English
- Type: Article
- Identifier: vital:6363 , http://hdl.handle.net/10962/d1006059
- Description: The pharmacokinetics of phenylpropanolamine have been studied in healthy human volunteers following the oral administration of an aqueous solution of the drug (50 mg/200 ml). Blood and urine samples collected throughout the trial were assayed using HPLC with UV detection. The drug was shown to be rapidly absorbed with a mean tmax of 1.47 ± 0.49 h and a mean elimination half-life of 4.0 ± 0.5 h. Phenylpropanolamine is predominantly excreted via the kidney with a mean renal clearance of 0.646 ± 0.089 liter/kg/h and 90.2 ± 1.7% excreted unchanged in the urine. The data were not well described using conventional one or two body compartment models. However, the incorporation of a discontinuous absorption phase into the models resulted in an improved overall fit with better characterisation of the absorption phase.
- Full Text:
- Date Issued: 1987
- Authors: Dowse, Roslind , Haigh, John M , Kanfer, Isadore
- Date: 1987
- Language: English
- Type: Article
- Identifier: vital:6363 , http://hdl.handle.net/10962/d1006059
- Description: The pharmacokinetics of phenylpropanolamine have been studied in healthy human volunteers following the oral administration of an aqueous solution of the drug (50 mg/200 ml). Blood and urine samples collected throughout the trial were assayed using HPLC with UV detection. The drug was shown to be rapidly absorbed with a mean tmax of 1.47 ± 0.49 h and a mean elimination half-life of 4.0 ± 0.5 h. Phenylpropanolamine is predominantly excreted via the kidney with a mean renal clearance of 0.646 ± 0.089 liter/kg/h and 90.2 ± 1.7% excreted unchanged in the urine. The data were not well described using conventional one or two body compartment models. However, the incorporation of a discontinuous absorption phase into the models resulted in an improved overall fit with better characterisation of the absorption phase.
- Full Text:
- Date Issued: 1987
Pauline Smith : between worlds
- Authors: Driver, Dorothy
- Date: 1987
- Subjects: Smith, Pauline, 1883-1959
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2266 , http://hdl.handle.net/10962/d1004792
- Full Text:
- Date Issued: 1987
- Authors: Driver, Dorothy
- Date: 1987
- Subjects: Smith, Pauline, 1883-1959
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2266 , http://hdl.handle.net/10962/d1004792
- Full Text:
- Date Issued: 1987
The law of culpable homicide in South Africa : with reference to the law of manslaughter in English law and the law related to negligent killing in German law
- Authors: du Plessis, J R
- Date: 1987
- Subjects: Homicide -- Law and legislation -- South Africa Homicide -- Law and legislation -- England Homicide -- Law and legislation -- Germany (West)
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3670 , http://hdl.handle.net/10962/d1003185
- Description: Culpable homicide is the unlawful negligent killing of a fellow human being. As such it is in many respects a 'residual' crime being the verdict prosecutors may expect when they are unable to prove the intention to kill when prosecuting for murder. A feature of this was that in the past when defences such as, for instance, intoxication or provocation were raised at murder trials, convictions of culpable homicide were almost automatic. In recent years, under the influence of the 'purist' current in our Criminal law, intoxication has become a defence to culpable homicide and provocation resulting in loss of self-control has also become a defence to culpable homicide. These developments are unacceptable to some writers on criminal law and a move away from the purist approach to the 'traditional' or pragmatic approach is to be expected. Greater emphasis will be placed on practical results than on the achievement of logical consistency. This could result in the law of culpable homicide becoming more socially effective than it is at present.
- Full Text:
- Date Issued: 1987
- Authors: du Plessis, J R
- Date: 1987
- Subjects: Homicide -- Law and legislation -- South Africa Homicide -- Law and legislation -- England Homicide -- Law and legislation -- Germany (West)
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3670 , http://hdl.handle.net/10962/d1003185
- Description: Culpable homicide is the unlawful negligent killing of a fellow human being. As such it is in many respects a 'residual' crime being the verdict prosecutors may expect when they are unable to prove the intention to kill when prosecuting for murder. A feature of this was that in the past when defences such as, for instance, intoxication or provocation were raised at murder trials, convictions of culpable homicide were almost automatic. In recent years, under the influence of the 'purist' current in our Criminal law, intoxication has become a defence to culpable homicide and provocation resulting in loss of self-control has also become a defence to culpable homicide. These developments are unacceptable to some writers on criminal law and a move away from the purist approach to the 'traditional' or pragmatic approach is to be expected. Greater emphasis will be placed on practical results than on the achievement of logical consistency. This could result in the law of culpable homicide becoming more socially effective than it is at present.
- Full Text:
- Date Issued: 1987
The play of surface and depth in the art of psychotherapy for anxiety and depression : inaugural lecture delivered at Rhodes University
- Authors: Edwards, D J A
- Date: 1987
- Subjects: Psychotherapy , Anxiety , Depression, Mental
- Language: English
- Type: Text
- Identifier: vital:620 , http://hdl.handle.net/10962/d1020689 , ISBN 0868101672
- Description: Inaugural lecture delivered at Rhodes University. , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1987
- Authors: Edwards, D J A
- Date: 1987
- Subjects: Psychotherapy , Anxiety , Depression, Mental
- Language: English
- Type: Text
- Identifier: vital:620 , http://hdl.handle.net/10962/d1020689 , ISBN 0868101672
- Description: Inaugural lecture delivered at Rhodes University. , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1987
The petrology and geochemistry of the upper critical zone of the Bushveld complex at the Amandelbult section of Rustenberg Platinum Mines Limited, Northwestern Transvaal, South Africa
- Authors: Field, Matthew
- Date: 1987 , 2013-03-06
- Subjects: Geology -- South Africa -- North-Western Transvaal , Petrology -- South Africa -- North-Western Transvaal
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5037 , http://hdl.handle.net/10962/d1007499 , Geology -- South Africa -- North-Western Transvaal , Petrology -- South Africa -- North-Western Transvaal
- Description: A study of petrological and geochemical variations through the upper Critical Zone of the Bushveld Complex at Amandelbult section of R.P,M. was undertaken. The sequence at this locality may be divided into seven "units" two of which appear to be complete, possessing the sequence harzburgite-pyroxenite-norite-anorthosite. The other five Units lack basal, intermediate or upper members. Considerable lateral variations are apparent in this sequence, but these are restricted to the Lower Pseudo Reef-Merensky Reef interval, tne same portion of the succession which is affected by pothole structures. The single most important petrographic feature of genetic significance is the occurrence of annealed, recrystallized anorthosite immediately underlying ulstramafic layers. This, together with the undulatory nature of the contact between the two rock layers, suggests that the ultramafic layer was emplaced as a hot liquid over a pre-existing, crystalline anorthosite floor, and that some remelting of this layer occurred. Variations in the chemical make-up of constituent silicate minerals reveal a number of significant processes which may have been operative in the magma chamber prior to crystallization, Olivine grains, for instance, exhibit extremely wide chemical variations both within single layers and from one layer to the next. These variations are best explained by re-equilibration processes with spinel and base metal sulphides, rather than by wide variations in original liquidus compositions. It appears that the compositions of the initial liquids from which each basal olivine-bearing layer crystallized, were approximately similar. Variations in the iron-magnesium ratio of ortho-pyroxenes indicate well defined continuous fractionation trends in units which are considered to be complete. Magnesian compositions are recorded in ultramfic members, while increasingly iron-enriched values are recorded upwards through the sequence pyroxenite-norite-antorthosite. Plagioclase grains exhibit less well defined fractionation trends, but it is clear that an upward increase in An is encountered through indivitual Units. This is in direct contrast to the trend exhibited by orthopyroxene. A further feature of plagioclase grains is the considerable degree of chemical zonation exhibited by them. In cumulus grains this is commonly manifested as strongly reversed rims, while in intercululus grains normal zoning is ubiquitous. Whole-rock chemical variations through the succession indicate that cyclical variations occur through successive Units, but that these merely reflect changes in modal mineralogy and not liquid fractionation trends. Such trends can be shown for selected element ratios, where these elements are known to partition into a single mineral phase. Rations of pyroxene components such as the nickel/scandium ratio, exhibit a saw tooth pattern through successive Units, while ratios of plagioclase components such as the strontium/alumina ratio have unique, fairly constant values for each individual Unit but different values for successive Units. The latter type of cyclicity is not always strictly confined to lithologically recognized boundaries between Units, and a slight overlap into overlying ultramafic layers is apparent. An investigation of variations in trace element levels in a single layer in five widely separated boreholes revealed that there is some evidence for a lateral fractionation trend from the southwest (more primitive) to the northeast (more evolved), although the small number of data points available preclude definite conclusions. There exists in the data some evidence that the Giant Mottled Anorthosite differs chemically from the other anorthosites in the study section, and that it more closely resembles rocks of the Main Zone. This evidence is particularly apparent in variations of the chromium/aluminium ratio of orthoyroxene grains, and in the An content of plagioclase grains, both of whose trends exhibit distinct inflections at the base of this member. The features of the succession at Amandelbult are best explained by the model of Eales et al. (in press, a), which visualizes the input of a number of pulses of new, hot liquid into a magma chamber containing the fractionated residua of previous influxes. At a critical point in time, just prior to the mafic Merensky Reef input, a large input of gabboic liquid was intruded at high levels in the chamber. The lower portions of this liquid mixed with the residua of earlier mafic inputs, which in turn mixed with new inputs of mafic, typical Critical Zone liquids. Thus the lower portions of the study section represent mixtures of new Critical Zone liquids with the residua of previous such influxes, while the upper portions have the added complication of mixture with a Main Zone-type liquid. The unique chemical character of the Giant Mottled Anorthosite appears to be a direct manifestation of the influence of the Main Zone liquid. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Date Issued: 1987
- Authors: Field, Matthew
- Date: 1987 , 2013-03-06
- Subjects: Geology -- South Africa -- North-Western Transvaal , Petrology -- South Africa -- North-Western Transvaal
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5037 , http://hdl.handle.net/10962/d1007499 , Geology -- South Africa -- North-Western Transvaal , Petrology -- South Africa -- North-Western Transvaal
- Description: A study of petrological and geochemical variations through the upper Critical Zone of the Bushveld Complex at Amandelbult section of R.P,M. was undertaken. The sequence at this locality may be divided into seven "units" two of which appear to be complete, possessing the sequence harzburgite-pyroxenite-norite-anorthosite. The other five Units lack basal, intermediate or upper members. Considerable lateral variations are apparent in this sequence, but these are restricted to the Lower Pseudo Reef-Merensky Reef interval, tne same portion of the succession which is affected by pothole structures. The single most important petrographic feature of genetic significance is the occurrence of annealed, recrystallized anorthosite immediately underlying ulstramafic layers. This, together with the undulatory nature of the contact between the two rock layers, suggests that the ultramafic layer was emplaced as a hot liquid over a pre-existing, crystalline anorthosite floor, and that some remelting of this layer occurred. Variations in the chemical make-up of constituent silicate minerals reveal a number of significant processes which may have been operative in the magma chamber prior to crystallization, Olivine grains, for instance, exhibit extremely wide chemical variations both within single layers and from one layer to the next. These variations are best explained by re-equilibration processes with spinel and base metal sulphides, rather than by wide variations in original liquidus compositions. It appears that the compositions of the initial liquids from which each basal olivine-bearing layer crystallized, were approximately similar. Variations in the iron-magnesium ratio of ortho-pyroxenes indicate well defined continuous fractionation trends in units which are considered to be complete. Magnesian compositions are recorded in ultramfic members, while increasingly iron-enriched values are recorded upwards through the sequence pyroxenite-norite-antorthosite. Plagioclase grains exhibit less well defined fractionation trends, but it is clear that an upward increase in An is encountered through indivitual Units. This is in direct contrast to the trend exhibited by orthopyroxene. A further feature of plagioclase grains is the considerable degree of chemical zonation exhibited by them. In cumulus grains this is commonly manifested as strongly reversed rims, while in intercululus grains normal zoning is ubiquitous. Whole-rock chemical variations through the succession indicate that cyclical variations occur through successive Units, but that these merely reflect changes in modal mineralogy and not liquid fractionation trends. Such trends can be shown for selected element ratios, where these elements are known to partition into a single mineral phase. Rations of pyroxene components such as the nickel/scandium ratio, exhibit a saw tooth pattern through successive Units, while ratios of plagioclase components such as the strontium/alumina ratio have unique, fairly constant values for each individual Unit but different values for successive Units. The latter type of cyclicity is not always strictly confined to lithologically recognized boundaries between Units, and a slight overlap into overlying ultramafic layers is apparent. An investigation of variations in trace element levels in a single layer in five widely separated boreholes revealed that there is some evidence for a lateral fractionation trend from the southwest (more primitive) to the northeast (more evolved), although the small number of data points available preclude definite conclusions. There exists in the data some evidence that the Giant Mottled Anorthosite differs chemically from the other anorthosites in the study section, and that it more closely resembles rocks of the Main Zone. This evidence is particularly apparent in variations of the chromium/aluminium ratio of orthoyroxene grains, and in the An content of plagioclase grains, both of whose trends exhibit distinct inflections at the base of this member. The features of the succession at Amandelbult are best explained by the model of Eales et al. (in press, a), which visualizes the input of a number of pulses of new, hot liquid into a magma chamber containing the fractionated residua of previous influxes. At a critical point in time, just prior to the mafic Merensky Reef input, a large input of gabboic liquid was intruded at high levels in the chamber. The lower portions of this liquid mixed with the residua of earlier mafic inputs, which in turn mixed with new inputs of mafic, typical Critical Zone liquids. Thus the lower portions of the study section represent mixtures of new Critical Zone liquids with the residua of previous such influxes, while the upper portions have the added complication of mixture with a Main Zone-type liquid. The unique chemical character of the Giant Mottled Anorthosite appears to be a direct manifestation of the influence of the Main Zone liquid. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Date Issued: 1987
A geological model of shear zone gold deposits in the Pietersburg Greenstone Belt, South Africa
- 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).
- Full Text:
- Date Issued: 1987
- 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).
- Full Text:
- Date Issued: 1987
Amogela Morena dimpho tsena
- Ga-Rankuwa Workshop Participants, Composer Not Specified, Dargie, Dave
- Authors: Ga-Rankuwa Workshop Participants , Composer Not Specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/301499 , vital:58056 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-29
- Description: Unaccompanied Workshop Mass hymn.
- Full Text: false
- Date Issued: 1987
- Authors: Ga-Rankuwa Workshop Participants , Composer Not Specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/301499 , vital:58056 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-29
- Description: Unaccompanied Workshop Mass hymn.
- Full Text: false
- Date Issued: 1987
Peace Song
- Ga-Rankuwa Workshop Participants, Composer not specified, Dargie, Dave
- Authors: Ga-Rankuwa Workshop Participants , Composer not specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/299930 , vital:57869 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-15
- Description: Workshop Mass hymn with Marimba and rattle accompaniment.
- Full Text: false
- Date Issued: 1987
- Authors: Ga-Rankuwa Workshop Participants , Composer not specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/299930 , vital:57869 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-15
- Description: Workshop Mass hymn with Marimba and rattle accompaniment.
- Full Text: false
- Date Issued: 1987
Song to accompany readings
- Ga-Rankuwa Workshop Participants, Composer not specified, Dargie, Dave
- Authors: Ga-Rankuwa Workshop Participants , Composer not specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/299784 , vital:57854 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-05
- Description: Workshop Mass hymn with drum and rattle accompaniment.
- Full Text: false
- Date Issued: 1987
- Authors: Ga-Rankuwa Workshop Participants , Composer not specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/299784 , vital:57854 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-05
- Description: Workshop Mass hymn with drum and rattle accompaniment.
- Full Text: false
- Date Issued: 1987
Communion Song
- Ga-Rankuwa Workshop Participants, Composer not specified, Dargie, Dave
- Authors: Ga-Rankuwa Workshop Participants , Composer not specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/301356 , vital:58040 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-17
- Description: Unaccompanied Workshop Mass hymn.
- Full Text: false
- Date Issued: 1987
- Authors: Ga-Rankuwa Workshop Participants , Composer not specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/301356 , vital:58040 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-17
- Description: Unaccompanied Workshop Mass hymn.
- Full Text: false
- Date Issued: 1987
Motho ke motho ka batho ba bang
- Ga-Rankuwa Workshop Participants, Composer Not Specified, Dargie, Dave
- Authors: Ga-Rankuwa Workshop Participants , Composer Not Specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/301541 , vital:58063 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-31
- Description: Unaccompanied Workshop Mass hymn.
- Full Text: false
- Date Issued: 1987
- Authors: Ga-Rankuwa Workshop Participants , Composer Not Specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/301541 , vital:58063 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-31
- Description: Unaccompanied Workshop Mass hymn.
- Full Text: false
- Date Issued: 1987
Ride on, sing an African band
- Ga-Rankuwa Workshop Participants, Group Composition, Dargie, Dave
- Authors: Ga-Rankuwa Workshop Participants , Group Composition , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: English
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/301467 , vital:58052 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-26
- Description: Unaccompanied Workshop Mass hymn.
- Full Text: false
- Date Issued: 1987
- Authors: Ga-Rankuwa Workshop Participants , Group Composition , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: English
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/301467 , vital:58052 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-26
- Description: Unaccompanied Workshop Mass hymn.
- Full Text: false
- Date Issued: 1987
Kyrie
- Ga-Rankuwa Workshop Participants, Composer not specified, Dargie, Dave
- Authors: Ga-Rankuwa Workshop Participants , Composer not specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/299779 , vital:57853 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-04
- Description: Workshop Mass hymn with drum and rattle accompaniment.
- Full Text: false
- Date Issued: 1987
- Authors: Ga-Rankuwa Workshop Participants , Composer not specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/299779 , vital:57853 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-04
- Description: Workshop Mass hymn with drum and rattle accompaniment.
- Full Text: false
- Date Issued: 1987
Morena re neye Kagiso le boitumelo
- Ga-Rankuwa Workshop Participants, Composer not specified, Dargie, Dave
- Authors: Ga-Rankuwa Workshop Participants , Composer not specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/301389 , vital:58043 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-20
- Description: Workshop Mass hymn with drum and rattle accompaniment.
- Full Text: false
- Date Issued: 1987
- Authors: Ga-Rankuwa Workshop Participants , Composer not specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/301389 , vital:58043 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-20
- Description: Workshop Mass hymn with drum and rattle accompaniment.
- Full Text: false
- Date Issued: 1987
Take your time, just look around
- Ga-Rankuwa Workshop Participants, Group Composition, Dargie, Dave
- Authors: Ga-Rankuwa Workshop Participants , Group Composition , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: English
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/301486 , vital:58055 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-28
- Description: Unaccompanied Workshop Mass hymn.
- Full Text: false
- Date Issued: 1987
- Authors: Ga-Rankuwa Workshop Participants , Group Composition , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: English
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/301486 , vital:58055 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-28
- Description: Unaccompanied Workshop Mass hymn.
- Full Text: false
- Date Issued: 1987
Mystery of Faith
- Ga-Rankuwa Workshop Participants, Composer not specified, Dargie, Dave
- Authors: Ga-Rankuwa Workshop Participants , Composer not specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/299884 , vital:57864 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-11
- Description: Unaccompanied Workshop Mass hymn and spoken Word.
- Full Text: false
- Date Issued: 1987
- Authors: Ga-Rankuwa Workshop Participants , Composer not specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/299884 , vital:57864 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-11
- Description: Unaccompanied Workshop Mass hymn and spoken Word.
- Full Text: false
- Date Issued: 1987
Morena re itshwarele
- Ga-Rankuwa Workshop Participants, Group Composition, Dargie, Dave
- Authors: Ga-Rankuwa Workshop Participants , Group Composition , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/301554 , vital:58065 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-32
- Description: Workshop Mass hymn with drum and rattle accompaniment.
- Full Text: false
- Date Issued: 1987
- Authors: Ga-Rankuwa Workshop Participants , Group Composition , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/301554 , vital:58065 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-32
- Description: Workshop Mass hymn with drum and rattle accompaniment.
- Full Text: false
- Date Issued: 1987
Usathan uphetl izimbe
- Ga-Rankuwa Workshop Participants, Composer not specified, Dargie, Dave
- Authors: Ga-Rankuwa Workshop Participants , Composer not specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/301370 , vital:58041 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-18
- Description: Workshop Mass hymn with drum, clapping and rattle accompaniment.
- Full Text: false
- Date Issued: 1987
- Authors: Ga-Rankuwa Workshop Participants , Composer not specified , Dargie, Dave
- Date: 1987
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa South Africa Ga-Rankuwa f-sa
- Language: Setswana
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/301370 , vital:58041 , International Library of African Music, Rhodes University, Makhanda, South Africa , Dave Dargie Field Tapes, Rhodes University, Makhanda, South Africa , DD104-18
- Description: Workshop Mass hymn with drum, clapping and rattle accompaniment.
- Full Text: false
- Date Issued: 1987