The Luderitz Alkaline Province, South West Africa I: descriptive petrology of the Granitberg Foyaite Complex
- Authors: Marsh, Julian S
- Date: 1975
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/132951 , vital:36912
- Description: The Granitberg foyaite complex is one of three known alkaline igneous complexes, which, together with a dyke swarm, constitute the Liüderitz Alkaline Province of Lower Cretaceous age. The near-circular complex is emplaced into dolomites and sandstones of the Bogenfels Formation. A large fragment of these sedimentary rocks, originally forming the roof of the intrusion, is preserved in the centre of the complex.
- Full Text:
- Date Issued: 1975
- Authors: Marsh, Julian S
- Date: 1975
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/132951 , vital:36912
- Description: The Granitberg foyaite complex is one of three known alkaline igneous complexes, which, together with a dyke swarm, constitute the Liüderitz Alkaline Province of Lower Cretaceous age. The near-circular complex is emplaced into dolomites and sandstones of the Bogenfels Formation. A large fragment of these sedimentary rocks, originally forming the roof of the intrusion, is preserved in the centre of the complex.
- Full Text:
- Date Issued: 1975
The Luderitz Alkaline Province, South West Africa II: metasomatism and assimilation in the contact aureole of the Granitberg Foyaite Complex
- Authors: Marsh, Julian S
- Date: 1975
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/132963 , vital:36913
- Description: Reactions between the Outer Foyaite magma of the Granitberg Complex and the sedimentary country rocks are striking. At sandstone contacts the magma has assimilated quartz-rich sedimentary material and a suite of pulaskites, peralkaline nordmarkites, and peralkaline granites have been generated by a complex process involving both assimilation and crystal fractionation.
- Full Text:
- Date Issued: 1975
- Authors: Marsh, Julian S
- Date: 1975
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/132963 , vital:36913
- Description: Reactions between the Outer Foyaite magma of the Granitberg Complex and the sedimentary country rocks are striking. At sandstone contacts the magma has assimilated quartz-rich sedimentary material and a suite of pulaskites, peralkaline nordmarkites, and peralkaline granites have been generated by a complex process involving both assimilation and crystal fractionation.
- Full Text:
- Date Issued: 1975
The population dynamics of an indigenous Psyllid Acizzia Russellae (Homoptera: Psyllidae )with special reference to the influence of the host plant Acacia Karroo
- Authors: Webb, John Warren
- Date: 1975
- Subjects: Homoptera , Jumping plant-lice , Insect populations , Insects -- Ecology , Acacia -- Karroo
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5894 , http://hdl.handle.net/10962/d1013415
- Description: The biology and ecology of an indigenous, non-pest insect on an indigenous host plant were investigated. The study includes a taxonomic description of this new species, an account of its general biology, monitoring of the seasonal fluctuations in numbers of the psyllid and its hymenopterous parasitoids, and a study of various aspects of the host plant, including nitrogen levels, water stress, leaf hardness, and the effect of cutting, in relation to spatial and temporal differences in insect population numbers. Natural enemies, inter- and intra-specific competition had very little determining influence on the population numbers of the psyllid. Temperature and humidity had little direct effect, but may have influenced the population dynamics via its effects on the host plant. Seasonal patterns in psyllid numbers followed fluctuations in nitrogen levels; statistically valid correlations were obtained between leaf nitrogen and psyllid numbers on individual trees at various times. These findings were supported by the results of preliminary laboratory experiments employing different fertilizer treatments. No effect of water stress or leaf hardness was clearly discerned. Cutting of trees altered the characteristics of the subsequent regenerative growth so as to allow massive psyllid infestations to develop, thus showing the tremendous importance of the host plant in determining population levels in this insect. Preliminary investigations of the nature and mechanism of this effect were conducted, and its significance is discussed. The relevance of these findings to modern concepts of regulation in insect populations and to principles of pest management is discussed.
- Full Text:
- Date Issued: 1975
- Authors: Webb, John Warren
- Date: 1975
- Subjects: Homoptera , Jumping plant-lice , Insect populations , Insects -- Ecology , Acacia -- Karroo
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5894 , http://hdl.handle.net/10962/d1013415
- Description: The biology and ecology of an indigenous, non-pest insect on an indigenous host plant were investigated. The study includes a taxonomic description of this new species, an account of its general biology, monitoring of the seasonal fluctuations in numbers of the psyllid and its hymenopterous parasitoids, and a study of various aspects of the host plant, including nitrogen levels, water stress, leaf hardness, and the effect of cutting, in relation to spatial and temporal differences in insect population numbers. Natural enemies, inter- and intra-specific competition had very little determining influence on the population numbers of the psyllid. Temperature and humidity had little direct effect, but may have influenced the population dynamics via its effects on the host plant. Seasonal patterns in psyllid numbers followed fluctuations in nitrogen levels; statistically valid correlations were obtained between leaf nitrogen and psyllid numbers on individual trees at various times. These findings were supported by the results of preliminary laboratory experiments employing different fertilizer treatments. No effect of water stress or leaf hardness was clearly discerned. Cutting of trees altered the characteristics of the subsequent regenerative growth so as to allow massive psyllid infestations to develop, thus showing the tremendous importance of the host plant in determining population levels in this insect. Preliminary investigations of the nature and mechanism of this effect were conducted, and its significance is discussed. The relevance of these findings to modern concepts of regulation in insect populations and to principles of pest management is discussed.
- Full Text:
- Date Issued: 1975
The recruitment and ogranisation [i.e. organisation] of African labour for the Kimberley diamond mines: 1871-1888
- Authors: Siebörger, Robert Frederick
- Date: 1975
- Subjects: Diamond mines and mining -- South Africa -- Kimberley , Unskilled labor -- Recruiting -- South Africa , Unskilled labor -- South Africa -- Kimberley -- Social conditions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2614 , http://hdl.handle.net/10962/d1013228
- Description: Behind the fortunes in diamonds, the great open mines and the teeming town that was early Kimberley, were African labourers. Diggers seemed scarcely to care about them unless they were "in short supply", and many historians have been interested only in the guns they carried home with them. This study is concerned with these men: where they came from, why and how they came, and their treatment while they worked in Kimberley. The initial inspiration for the study came from the chapter on diamond production in Sheila van der Horst's Native Labour in South Africa, a remarkable contribution to the history of the Diamond Fields. The later studies by G.V. Doxey and more recently by John Smalberger which have expanded on aspects of Van der Horst's work, have led me to delve more deeply into other areas upon which they have not touched. One potentially fruitful line of study which was beyond the scope of this work was an investigation into the degree to which the Griqualand West labour question affected the attempts at South African federation in the 1870's. The main sources for the work have been the Griqualand West archives in the Cape Archives, for the period 1872-1880, and the various Kimberley newspapers. Labour returns were printed monthly in the Griqualand West Government Gazette for most years, till 1880. Cape Blue Books were useful sources for the period after 1880. De Beers Consolidated Mines Ltd. hold very little material relating to the pre-amalgamation period, though the extant minute books of the De Beers and Kimberley Central Diamond Mining Companies provided valuable information. A considerable number of contemporary published works were also consulted but, though most made some reference to African labour, few contained anything worthy of mention.
- Full Text:
- Date Issued: 1975
- Authors: Siebörger, Robert Frederick
- Date: 1975
- Subjects: Diamond mines and mining -- South Africa -- Kimberley , Unskilled labor -- Recruiting -- South Africa , Unskilled labor -- South Africa -- Kimberley -- Social conditions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2614 , http://hdl.handle.net/10962/d1013228
- Description: Behind the fortunes in diamonds, the great open mines and the teeming town that was early Kimberley, were African labourers. Diggers seemed scarcely to care about them unless they were "in short supply", and many historians have been interested only in the guns they carried home with them. This study is concerned with these men: where they came from, why and how they came, and their treatment while they worked in Kimberley. The initial inspiration for the study came from the chapter on diamond production in Sheila van der Horst's Native Labour in South Africa, a remarkable contribution to the history of the Diamond Fields. The later studies by G.V. Doxey and more recently by John Smalberger which have expanded on aspects of Van der Horst's work, have led me to delve more deeply into other areas upon which they have not touched. One potentially fruitful line of study which was beyond the scope of this work was an investigation into the degree to which the Griqualand West labour question affected the attempts at South African federation in the 1870's. The main sources for the work have been the Griqualand West archives in the Cape Archives, for the period 1872-1880, and the various Kimberley newspapers. Labour returns were printed monthly in the Griqualand West Government Gazette for most years, till 1880. Cape Blue Books were useful sources for the period after 1880. De Beers Consolidated Mines Ltd. hold very little material relating to the pre-amalgamation period, though the extant minute books of the De Beers and Kimberley Central Diamond Mining Companies provided valuable information. A considerable number of contemporary published works were also consulted but, though most made some reference to African labour, few contained anything worthy of mention.
- Full Text:
- Date Issued: 1975
The shaman and the artist: a personal enquiry
- Authors: Cull, Cleone
- Date: 1975
- Subjects: Art, Shamanistic Shamans Artists
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2478 , http://hdl.handle.net/10962/d1010640
- Description: This inquiry incorporates anthropological surveys on the life and character of the shaman, some writings of the American Plains Indians, and artist's, whose life and work reflects the power/life force so integral to the beliefs of these so called primitive cultures. Since the artist cannot be separated from his environment, the actions and reactions of society have also been explored. The method of inquiry has been to establish, first, the way of the shaman, and then the way of the artist. Although each artist, reflects only certain aspects of the enquiry, there is a strong affinity in the life and works of them all.
- Full Text:
- Date Issued: 1975
- Authors: Cull, Cleone
- Date: 1975
- Subjects: Art, Shamanistic Shamans Artists
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2478 , http://hdl.handle.net/10962/d1010640
- Description: This inquiry incorporates anthropological surveys on the life and character of the shaman, some writings of the American Plains Indians, and artist's, whose life and work reflects the power/life force so integral to the beliefs of these so called primitive cultures. Since the artist cannot be separated from his environment, the actions and reactions of society have also been explored. The method of inquiry has been to establish, first, the way of the shaman, and then the way of the artist. Although each artist, reflects only certain aspects of the enquiry, there is a strong affinity in the life and works of them all.
- Full Text:
- Date Issued: 1975
Third Mtsitso
- Performer not specified, Tracey, Andrew T N
- Authors: Performer not specified , Tracey, Andrew T N
- Date: 1975
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Africa South Africa Johannesburg f-sa
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/94113 , vital:31002 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC031a-08
- Description: Chopi timbila xylophone dance song solo.
- Full Text: false
- Date Issued: 1975
- Authors: Performer not specified , Tracey, Andrew T N
- Date: 1975
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Africa South Africa Johannesburg f-sa
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/94113 , vital:31002 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC031a-08
- Description: Chopi timbila xylophone dance song solo.
- Full Text: false
- Date Issued: 1975
Title not specified
- John Hakurotwi Mude, Tracey, Andrew T N, Paul Berliner
- Authors: John Hakurotwi Mude , Tracey, Andrew T N , Paul Berliner
- Date: 1975
- Subjects: Folk music--Zimbabwe , Mbira music , Folk dance music , Rattle (Musical instrument) , Sub-Saharan African music , Africa Zimbabwe Harare f-rh
- Language: Shona
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/115397 , vital:34123 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC141a-04
- Description: Traditional Shona dance song accompanied by the mbira dzavadzimu and rattles
- Full Text: false
- Date Issued: 1975
- Authors: John Hakurotwi Mude , Tracey, Andrew T N , Paul Berliner
- Date: 1975
- Subjects: Folk music--Zimbabwe , Mbira music , Folk dance music , Rattle (Musical instrument) , Sub-Saharan African music , Africa Zimbabwe Harare f-rh
- Language: Shona
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/115397 , vital:34123 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC141a-04
- Description: Traditional Shona dance song accompanied by the mbira dzavadzimu and rattles
- Full Text: false
- Date Issued: 1975
Title not specified
- John Hakurotwi Mude, Tracey, Andrew T N, Paul Berliner
- Authors: John Hakurotwi Mude , Tracey, Andrew T N , Paul Berliner
- Date: 1975
- Subjects: Folk music--Zimbabwe , Mbira music , Folk dance music , Rattle (Musical instrument) , Sub-Saharan African music , Africa Zimbabwe Harare f-rh
- Language: Shona
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/121622 , vital:35116 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC141b-05
- Description: Traditional Shona dance song accompanied by the Mbira dzavadzimu and rattles
- Full Text: false
- Date Issued: 1975
- Authors: John Hakurotwi Mude , Tracey, Andrew T N , Paul Berliner
- Date: 1975
- Subjects: Folk music--Zimbabwe , Mbira music , Folk dance music , Rattle (Musical instrument) , Sub-Saharan African music , Africa Zimbabwe Harare f-rh
- Language: Shona
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/121622 , vital:35116 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC141b-05
- Description: Traditional Shona dance song accompanied by the Mbira dzavadzimu and rattles
- Full Text: false
- Date Issued: 1975
Title not specified
- Simon Mashoko, Tracey, Andrew T N, Paul Berliner
- Authors: Simon Mashoko , Tracey, Andrew T N , Paul Berliner
- Date: 1975
- Subjects: Folk music--Zimbabwe , Mbira music , Folk dance music , Sub-Saharan African music , Africa Zimbabwe Harare f-rh
- Language: Shona
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/121522 , vital:35110 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC141b-03
- Description: Traditional Shona dance song accompanied by the Mbira dzavadzimu
- Full Text: false
- Date Issued: 1975
- Authors: Simon Mashoko , Tracey, Andrew T N , Paul Berliner
- Date: 1975
- Subjects: Folk music--Zimbabwe , Mbira music , Folk dance music , Sub-Saharan African music , Africa Zimbabwe Harare f-rh
- Language: Shona
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/121522 , vital:35110 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC141b-03
- Description: Traditional Shona dance song accompanied by the Mbira dzavadzimu
- Full Text: false
- Date Issued: 1975
Title not specified
- John Hakurotwi Mude, Tracey, Andrew T N, Paul Berliner
- Authors: John Hakurotwi Mude , Tracey, Andrew T N , Paul Berliner
- Date: 1975
- Subjects: Folk music--Zimbabwe , Mbira music , Folk dance music , Sub-Saharan African music , Africa Zimbabwe Harare f-rh
- Language: Shona
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/121552 , vital:35112 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC141b-04
- Description: Traditional Shona dance song accompanied by the Mbira dzavadzimu
- Full Text: false
- Date Issued: 1975
- Authors: John Hakurotwi Mude , Tracey, Andrew T N , Paul Berliner
- Date: 1975
- Subjects: Folk music--Zimbabwe , Mbira music , Folk dance music , Sub-Saharan African music , Africa Zimbabwe Harare f-rh
- Language: Shona
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/121552 , vital:35112 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC141b-04
- Description: Traditional Shona dance song accompanied by the Mbira dzavadzimu
- Full Text: false
- Date Issued: 1975
Tsomo Dam, 1975
- Ingle, Pauline Cornwell, 1915-1999
- Authors: Ingle, Pauline Cornwell, 1915-1999
- Date: 1975
- Subjects: Dams -- South Africa , Photography -- South Africa
- Language: English
- Type: Still image
- Identifier: vital:12175 , http://hdl.handle.net/10353/d1000952 , Dams -- South Africa , Photography -- South Africa
- Full Text: false
- Date Issued: 1975
- Authors: Ingle, Pauline Cornwell, 1915-1999
- Date: 1975
- Subjects: Dams -- South Africa , Photography -- South Africa
- Language: English
- Type: Still image
- Identifier: vital:12175 , http://hdl.handle.net/10353/d1000952 , Dams -- South Africa , Photography -- South Africa
- Full Text: false
- Date Issued: 1975
Twistors in curved space
- Ward, R S (Richard Samuel), 1951-
- Authors: Ward, R S (Richard Samuel), 1951-
- Date: 1975
- Subjects: Twistor theory , Space and time
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5429 , http://hdl.handle.net/10962/d1013472
- Description: From the Introduction, p. 1. During the past decade, the theory of twistors has been introduced and developed, primarily by Professor Roger Penrose, as part of a long-term program aimed at resolving certain difficulties in present-day physical theory. These difficulties include, firstly, the problem of combining quantum mechanics and general relativity, and, secondly, the question of whether the concept of a continuum is at all relevant to physics. Most models of space-time used in general relativity employ the idea of a manifold consisting of a continuum of points. This feature of the models has often been criticised, on the grounds that physical observations are essentially discrete in nature; for reasons that are mathematical, rather than physical, the gaps between these observations are filled in a continuous fashion (see, for example, Schrodinger (I), pp.26-31). Although analysis (in its generally accepted form) demands that quantities should take on a continuous range of values, physics, as such,does not make such a demand. The situation in quantum mechanics is not all that much better since, although some quantities such as angular momentum can only take on certain discrete values, one still has to deal with the complex continuum of probability amplitudes. From this point of view it would be desirable to have all physical laws expressed in terms of combinatorial mathematics, rather than in terms of (standard) analysis.
- Full Text:
- Date Issued: 1975
- Authors: Ward, R S (Richard Samuel), 1951-
- Date: 1975
- Subjects: Twistor theory , Space and time
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5429 , http://hdl.handle.net/10962/d1013472
- Description: From the Introduction, p. 1. During the past decade, the theory of twistors has been introduced and developed, primarily by Professor Roger Penrose, as part of a long-term program aimed at resolving certain difficulties in present-day physical theory. These difficulties include, firstly, the problem of combining quantum mechanics and general relativity, and, secondly, the question of whether the concept of a continuum is at all relevant to physics. Most models of space-time used in general relativity employ the idea of a manifold consisting of a continuum of points. This feature of the models has often been criticised, on the grounds that physical observations are essentially discrete in nature; for reasons that are mathematical, rather than physical, the gaps between these observations are filled in a continuous fashion (see, for example, Schrodinger (I), pp.26-31). Although analysis (in its generally accepted form) demands that quantities should take on a continuous range of values, physics, as such,does not make such a demand. The situation in quantum mechanics is not all that much better since, although some quantities such as angular momentum can only take on certain discrete values, one still has to deal with the complex continuum of probability amplitudes. From this point of view it would be desirable to have all physical laws expressed in terms of combinatorial mathematics, rather than in terms of (standard) analysis.
- Full Text:
- Date Issued: 1975
Who goes to parliament?
- Authors: Stultz, Newell Maynard
- Date: 1975
- Subjects: Legislators -- South Africa South Africa -- Politics and government -- 1948-1994 South Africa -- Politics and government
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2747 , vital:20322 , ISBN 0949980560
- Description: The focus here is upon the 1 169 white men and the twelve white women who were elected or nominated to the South African Parliament in Cape Town between 1910 and the conclusion of the 1970 general and Senate elections.1 Because of the integrated nature of government at the national level in South Africa, an examination of all parliamentarians concurrently produces information on all cabinet ministers during the same period, and for most if not all of the top leaders of the major political parties as well. Hence, recognizing the unitary structure of the South African regime - sometimes expressed in the principle of the 'sovereignty of Parliament' - it seems possible to designate these 1 181 persons as the formally ascendant South African political elite during the country's first six decades. Moreover, there is no reason to doubt that this number includes nearly all of the persons who exercised disproportionately great real power during these years, excepting, of course, those few non-whites who may be thought to have been politically influential at the national level. Every indication is that political life in South Africa centred on these individuals, or at least on some of them, for clearly not all were of equal political importance. Yet even the leaders within this select group, whom we shall also consider separately in detail, frequently (although not in every case) rose to prominence within the institution of Parliament, in part on the basis of their ability to influence and control its deliberations. An understanding of the backgrounds of all parliamentarians thus not only helps to describe the body itself, but may also contribute a new appreciation of the political power of the country's top leadership. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1975
- Authors: Stultz, Newell Maynard
- Date: 1975
- Subjects: Legislators -- South Africa South Africa -- Politics and government -- 1948-1994 South Africa -- Politics and government
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2747 , vital:20322 , ISBN 0949980560
- Description: The focus here is upon the 1 169 white men and the twelve white women who were elected or nominated to the South African Parliament in Cape Town between 1910 and the conclusion of the 1970 general and Senate elections.1 Because of the integrated nature of government at the national level in South Africa, an examination of all parliamentarians concurrently produces information on all cabinet ministers during the same period, and for most if not all of the top leaders of the major political parties as well. Hence, recognizing the unitary structure of the South African regime - sometimes expressed in the principle of the 'sovereignty of Parliament' - it seems possible to designate these 1 181 persons as the formally ascendant South African political elite during the country's first six decades. Moreover, there is no reason to doubt that this number includes nearly all of the persons who exercised disproportionately great real power during these years, excepting, of course, those few non-whites who may be thought to have been politically influential at the national level. Every indication is that political life in South Africa centred on these individuals, or at least on some of them, for clearly not all were of equal political importance. Yet even the leaders within this select group, whom we shall also consider separately in detail, frequently (although not in every case) rose to prominence within the institution of Parliament, in part on the basis of their ability to influence and control its deliberations. An understanding of the backgrounds of all parliamentarians thus not only helps to describe the body itself, but may also contribute a new appreciation of the political power of the country's top leadership. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1975