WCED causes crisis in education
- Authors: SADTU
- Date: 1997
- Subjects: SADTU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/162052 , vital:40752
- Description: On 15 December 1997 the WCED tabled a proposal in the ELRC. This would effectively terminate the contracts of 3333 temporary educators who were filling vacant substantive posts that were created after 1 July 1996 as a result of the rationalisation process. Not only will temporary educators be dismissed, but the posts that they occupy will be frozen. This means that the teachers who remain behind at schools will have increased workloads and will have to manage bigger class sizes
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- Date Issued: 1997
Voltammetric behavior of cysteine and metallothionein on cobalt (II) tetrasulfonated phthalocyanine modified glassy carbon electrodes
- Authors: Limson, Janice , Nyokong, Tebello
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/293346 , vital:57077 , xlink:href="https://doi.org/10.1002/elan.1140090314"
- Description: Cysteine, and rat Cd, Zn-metallothionein (Cd, Zn-MT) have been studied electrochemically at glassy carbon electrodes modified with cobalt(II) tetrasulfonated phthalocyanine, [CoIITSPc]4−, where Pc(2-) = phthalocyanine dianion. The electrode was modified by electrodeposition of [CoIITSPc]4−. The anodic currents for the oxidation of cysteine on these electrodes are observed at 0.82 V (vs. Ag/AgCl) in acidic media. The anodic currents for the oxidation of Cd, Zn-MT are observed at 0.90 V at pH 8.4 (Tris buffer).
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- Date Issued: 1997
Use of cobalt (II) phthalocyanine to improve the sensitivity and stability of glassy carbon electrodes for the detection of cresols, chlorophenols and phenol
- Authors: Mafatle, Tsukutlane J , Nyokong, Tebello
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/293335 , vital:57076 , xlink:href="https://doi.org/10.1016/S0003-2670(97)00464-9"
- Description: A cobalt(II) phthalocyanine-modified glassy carbon electrode (CoPc-GCE) was used for the detection of o-, m- and p-cresols, and of 2-chlorophenol, 4-chlorophenol and phenol. Modification of the glassy carbon electrode with CoPc increases the oxidation currents of these species and increases the stability of the electrode. CoPc-GCE showed less fouling by the oxidation products of these compounds than the unmodified GCE. Comparison of some first row transition metal phthalocyanines showed the following trend for the enhancement of the currents for the oxidation of cresols and phenols: Co(II)Pc > Mn(II)Pc > Fe(II)Pc > Ni(II)Pc > Cu(II)Pc > H2Pc > Zn(II)Pc > GCE. When [Co(II)TSPc]4− (TSPc=tetrasulfo Pc) was added to aqueous solutions containing the cresols and phenols, an enhancement of the oxidation currents was also observed.
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- Date Issued: 1997
Towards sustainable conversation: Developing environmental education processes
- Authors: Le Roux, Kim
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/389884 , vital:68492 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/137446"
- Description: This paper highlights the importance of seeing environmental education as a process and considers the value of conversation and storytelling in environmental education processes. These processes are explored from a post-structural perspective within the context of the writer's own involvement in supporting environmental education processes.
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- Date Issued: 1997
The timing and duration of the Karoo igneous event, southern Gondwana
- Authors: Duncan, R A , Hooper, P R , Rehacek, J , Marsh, J , Duncan, A R
- Date: 1997
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/149485 , vital:38857 , https://doi.org/10.1029/97JB00972
- Description: A volcanic event of immense scale occurred within a relatively short period in early Jurassic time over large regions of the contiguous Gondwana supercontinent. In southern Africa, associated remnants of thick volcanic successions of lava flows and extensive dike and sill complexes of similar composition have been grouped together as the Karoo Igneous Province. Correlative volcanic and plutonic rocks occur in Antarctica and Australia as the Ferrar Province.
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- Date Issued: 1997
The study of the interactions of cobalt (II) tetrasulfophthalocyanine with cysteine and histidine
- Authors: Sekota, Mantoa , Nyokong, Tebello
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/293458 , vital:57087 , xlink:href="https://doi.org/10.1016/S0277-5387(97)00096-X"
- Description: Kinetics for the interaction of cobalt(II) tetrasulfophthalocyanine ([CoIITSPc]4−, Pc(−2) = phthalocyanine dianion) with the amino acids, histidine and cysteine, in pH 7.2 phosphate buffer were studied. The rates were found to be first order in both the [CoIITSPc]4− and the amino acid. The formation of the [CoIIITSPc]3− species in the presence of histidine occurred with a rate constant of 0.16 dm3 mol−s−1, whereas the formation of the [CoITSPc]5− species in the presence of cysteine gave a rate constant of 2.2 dm3 mol−1.
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- Date Issued: 1997
The petrology and significance of a stratiform mafic segregation pegmatite in a Karoo-aged dolerite sheet
- Authors: Mitchell, Andrew A , Naicker, S B , Marsh, Julian S , Dunlevey, J N
- Date: 1997
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/149496 , vital:38858 , https://hdl.handle.net/10520/EJC-9293fd659
- Description: A sub-horizontal stratiform mafic segregation pegmatite, of the order of 30 cm thick, occurs within 25 m of the top contact of a Karoo-aged dolerite sheet at Pietermaritzburg, South Africa. The host rock is an orthopyroxene-rich dolerite containing 5 - 8% interstitial granophyre. The pegmatite is similar to the host dolerite in many respects, except that the granophyre content is higher, and acicular augite is the only pyroxene. At its upper contact, a laterally continuous sub-horizontal joint forms a sharp boundary to the pegmatite, whilst the lower contact is gradational over a few millimetres. Low MgO and chalcophiles, and elevated incompatible element contents, are the main geochemical attributes of the pegmatite.
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- Date Issued: 1997
The human skin-blanching assay for in vitro topical corticosteroid assessment. I. Reproducibility of the assay
- Authors: Haigh, John M , Meyer, Eric , Smith, Eric W , Kanfer, Isadore
- Date: 1997
- Language: English
- Type: text , Article
- Identifier: vital:6381 , http://hdl.handle.net/10962/d1006299
- Description: The human skin blanching (vasoconstriction) assay for the assessment of topical corticosteroids has been in use for over 30 years, the intensity of the drug-induced blanching being assessed subjectively by eye. Both arms of several male and female volunteers are used for product application and more than one observer is used to estimate the degree of induced blanching. There are, therefore, numerous variables which are inherent in the assay procedure. This investigation consisted of three identical trials performed at 8-week intervals, utilising the same 18 volunteers and the same three observers in an attempt to address the question of reproducibility of the assay. From the results obtained it is clear that the assay methodology is capable of consistently distinguishing, on a rank order basis, between preparations which show similar blanching (chemically-equivalent formulations). The similarity of the results for the three individual trials gives considerable confidence to results produced using this methodology. An experiment designed to test the reproducibility of the blanching scores showed that the observers are capable of producing identical results even though visual observation is highly subjective.
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- Date Issued: 1997
The human skin blanching assay for in vivo topical corticosteroid assessment. II. Subject- and observer-dependent variation in blanching responses
- Authors: Haigh, John M , Meyer, Eric , Smith, Eric W , Kanfer, Isadore
- Date: 1997
- Language: English
- Type: text , Article
- Identifier: vital:6382 , http://hdl.handle.net/10962/d1006300
- Description: The human skin blanching (vasoconstriction) assay for the assessment of topical corticosteroids has been in use for over 30 years, the intensity of the drug-induced blanching being assessed subjectively by eye. Both arms of several male and female volunteers are used for product application and more than one observer is used to estimate the degree of induced blanching. There are, therefore, numerous variables which are inherent in the assay procedure. This investigation consisted of three identical trials performed at 8-week intervals, utilising the same 18 volunteers and the same three observers in an attempt to address the question of reproducibility of the assay. From the results obtained it is clear that the assay methodology is capable of consistently distinguishing, on a rank order basis, between preparations which show similar blanching (chemically-equivalent formulations). The similarity of the results for the three individual trials gives considerable confidence to results produced using this methodology. An experiment designed to test the reproducibility of the blanching scores showed that the observers are capable of producing identical results even though visual observation is highly subjective.
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- Date Issued: 1997
Substituted catechols as complexing agents for the determination of bismuth, lead, copper and cadmium by adsorptive stripping voltammetry
- Authors: Limson, Janice , Nyokong, Tebello
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/293311 , vital:57074 , xlink:href="https://doi.org/10.1016/S0003-2670(96)00585-5"
- Description: Copper, cadmium, lead and bismuth (> 5 μg ml−1) are determined by adsorptive cathodic stripping voltammetry (AdCSV) on a mercury film glassy carbon electrode, using catechol, 4-methylcatechol, 4-t-butylcatechol and resorcinol as complexing ligands. Complexes of lead, copper and bismuth with resorcinol showed the largest increase in current with increase in metal concentration, whereas complexes of these metals with 4-t-butylcatechol showed the lowest current response. Cadmium showed a different behaviour from the other three metals in that the highest current response was observed with 4-methylcatechol. The four metals could be determined simultaneously in the presence of resorcinol, although considerable interference was observed between bismuth and copper.
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- Date Issued: 1997
Submission of the CWIU to the portfolio committee on Child and Family support
- Authors: Chemical Workers Industrial Union (CWIU)
- Date: 1997
- Subjects: CWIU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/170234 , vital:41871
- Description: Having studied and extensively discussed the new child support and benefit system as agreed by cabinet on 5 March 1997, the CWIU Western Cape Women's Committee at its seminar held on 5-6 April 1997, noted j:tee following: 1) That the pSC-cess leading up to this development was not transparent and democratic despite its far-reaching consequences for the poorest sections of our people. 2) That the new system is designed to meet the requirements set by the government's economic strategy - Growth Employment and Redistibution (GEAR) for "fiscal restraint" and reducing the budget deficit and not meeting the needs of the majority of South Africans. This economic strategy of the government is in itself its response to the demands of local and international capital and not in line with the promise of "A better life for all" as embodied in the Reconstruction and Development Programme (RDP) and the new constitution which states the right for all "to have access to social security, including, if they are unable to support themselves and their dependents, appropriate social assistance". 3) That certain assumptions are made regarding the requirements of families, specifically women and their unsupported children, with regard to their survival, let alone decent living standards. In particular we refer to the new rates of R75 per child (under the age of 6 years) per month which is according to the government "slightly above the household subsistence level". This raises a number of serious questions and implications. Who determined these figures, what are they based on and who is it aimed at ? For years in the labour movement we have been confronted by capitalist bosses with similar "scientific statistics" across the bargaining table when fighting for decent wages. We have always rejected these as being based on existing poverty levels and seeking to perpetuate these conditions. These figures are also determined by academics hidden and protected by the privilege of the university environment, treating our poverty as mere scientific subjects for study to strengthen the ideological hand of their capitalist masters. We reject the figures and are convinced that the new rates will have the effect of increasing poverty. It has also been pointed out to us, for what it is worth, that the actual "Household Subsistence Level" figure is more than what the government has decided, ie. R96.83.
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- Date Issued: 1997
South African English: oppressor or liberator?
- Authors: Silva, Penny
- Date: 1997
- Language: English
- Type: text , conference publication
- Identifier: vital:7013 , http://hdl.handle.net/10962/d1013236 , https://www.ru.ac.za/media/rhodesuniversity/content/dsae/documents/articles/Silva_article.pdf
- Description: preprint , [From Conclusion] The advent of Nelson Mandela’s government in 1994 brought about rapid changes in the balance between English and Afrikaans in government and the media, and also increased the use of African languages on television. English remains the politically ‘neutral’ language for public use: President Mandela’s speeches are almost invariably in English; national conferences are held largely in English; in Parliament, although all official languages may be used, English is predominant; tertiary education is in English, with the exception of some of the Afrikaans-language campuses. Multilingualism is entrenched in the constitution, and supported as an ideal, but with its massive translating, interpreting, and printing implications, it is beyond the reach of the South African economy while there are urgent needs in health, housing, and education. The status of English as an international language, and as one which is politically more neutral than any other South African language, and its choice by the ANC, seems to ensure its ever-increasing dominance at a national level. At this level English is a national asset and ‘liberator’, in that it offers international access and a tool for communication between language groups. However, this dominance is likely to result in a growing resentment of English, particularly among those who have an ‘old’ political agenda, or who do not have access to becoming proficient in the language. To these South Africans, English will certainly be seen as ‘oppressor’. English in South Africa has long since passed out of the hands of mother-tongue speakers. With its increased public use by the new black elite, and in the electronic media, it seems likely that standard SAE is entering a period of accelerated change. This has already led to an intolerant reaction from some conservative English-speakers, and ‘standard’ is likely to become an increasingly difficult issue. If English is to be seen as ‘liberator’ by the average second-language speaker, the attitudes of mother-tongue speakers are significant. Triumphalism, arrogance, and irritation towards second-language speakers result in resentment. If it is to be ‘liberator’, English should be a resource to be appropriated and owned by all South Africans, not just the elite, to be used as a gateway to the wider world. For this to happen, creative solutions (and massive expenditure) would have to be applied to the teaching of English, particularly in black rural schools. Simultaneously, SAE will hopefully be claimed as the colourful and particularly local creation of an increasingly multi-ethnic company of first-, second-, and third-language speakers, and be used even more extensively than at present as the national language of communication. If it offers itself (and is perceived) as servant and liberator rather than oppressor, English will provide the linguistic ‘glue’ to bond a diverse and complex society.
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- Date Issued: 1997
SA in the global economy
- Authors: TURP
- Date: 1997
- Subjects: TURP
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/160942 , vital:40569
- Description: There are growing ties in the world between countries which coincides with current major social, political and economic restructuring. This is what many refer to as “globalisation”. Globalisation is a process which involves greater influence by global forces on individual countries such as South Africa. It means that global rules are being set which impact on: the policies of our government, the way companies in South Africa make their plans, the way that trade unions, community organisations and development organisations take up issues, and the way individuals make a living in the country. Globalisation has raised new and difficult issues for the labour movement and have thrown up new forms of struggle. Some of these issues have stumped and even demobilised some unionists in South Africa and internationally. Some feel that globalisation cannot be challenged and that there is no alternative. Others feel that we have not become powerless and that there are ways to fight its negative effects. Turp has published a book on these issues entitled, South Africa in the Global Economy: understanding the challenges, working towards alternatives. One of the main purposes of the book is to clarify what the new complex and challenging issues are. By doing this, we hope to clarify what we are up against.
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- Date Issued: 1997
Rhodes University Graduation Ceremony 1997
- Authors: Rhodes University
- Date: 1997
- Language: English
- Type: text
- Identifier: vital:8131 , http://hdl.handle.net/10962/d1006776
- Description: Rhodes University 1997 Graduation Ceremony [at] 1820 Settlers National Monument Friday, 18 April at 10:30 a.m., 08:15 p.m. [and] Saturday, 19 April at 10:30 a.m. , Rhodes University 1997 Graduation Ceremony City Hall, East London Friday, 9 May at 6:00 p.m.
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- Date Issued: 1997
Resisting racism: a teachers' guide to equality in education
- Authors: Eyber, Carola , Dyer, Dorothy , Versfeld, Ruth
- Date: 1997
- Subjects: Discrimination in education -- South Africa -- Prevention , Educational equalization -- South Africa , Multicultural education -- South Africa , Racism -- South Africa , School integration -- South Africa
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/73690 , vital:30217 , 1874864462
- Description: While South Africa's new democracy has meant that schools are now open to all, there is still racism in our schools. The changes in schools have in some cases exacerbated racial tensions and mistrust. Teachers everywhere are struggling with the changing dynamics of their classrooms and schools. There is much talk about how to work against racism. Various programmes and schools have developed different ways of dealing with it. All have particular ideas about how best to counter it. Resisting Racism aims to discuss and understand the beliefs and assumptions underlying many of these approaches. We look at the theories behind the different practices, present a range of ideas to illustrate them and consider their limits and possibilities. The book is a starting point for teachers and schools to reflect on their practices and help them to work out new strategies in the classroom and school. The approaches described will probably work best if they are used together, specially adapted to the specific context in which they are to be used. In the first part of the book we look at psychological and sociological explanations of why people are racist. Four different ways of looking at the issues are described. Each suggests practical ways of dealing with racism in the classroom and in the school. Chapter Three, on multi-cultural and anti-racist education, covers similar ground but from a slightly different angle, looking at curriculum debates about race, culture and equality. The final section looks at the concerns that many teachers have every day, such as "How can I deal with the language problem?" and "How can I involve parents in these issues?" In discussing these questions we have tried to use current theory to inform the practical ideas suggested. You will discover that this book is not neutral. It does have a point of view. It seeks to explain the limitations of assimilating students into a status quo and asks that schools take a critical look at their policies and practices. There are no easy answers or quick solutions. However thinking about and understanding the issues of racism and the ways in which it may be resisted can only bring us closer to positive change.
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- Date Issued: 1997
Research report
- Authors: NALEDI
- Date: 1997
- Subjects: NALEDI
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/151396 , vital:39063
- Description: The intention of this paper is to highlight debates and issues regarding the use of guota systems in strengthening women’s leadership in the labour movement. The paper is aimed at broadening the debate from mere acceptance or rejection of the guota. Debates on the use of guotas tend to be heated and controversial and can lose sight of the central objective, which is the development of strategies for women’s empowerment. A large proportion of trade unions internationally have adopted forms of the quota system as a strong measure to deal with the ongoing under-representation of women in leadership. The quota system has also been introduced effectively in a number of parliaments all over the world, including South Africa. The countries with the highest representation of women in parliament have all had to use quotas to achieve this. The paper draws from a review of some of the international literature, as well as interviews undertaken with trade unionists and parliamentarians (see Appendix A for a list of interviewees). This paper will also highlight some examples where quota systems have been adopted, including three COSATU affiliates, namely CWIU, NEHAWU and SAMWU.
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- Date Issued: 1997
Reproductive and feeding biology of the Natal mountain catfish, Amphilius natalensis (Siluriformes: Amphiliidae)
- Authors: Marriott, Michael S , Booth, Anthony J , Skelton, Paul H (Paul Harvey)
- Date: 1997
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/125837 , vital:35823 , https://doi.10.1023/A:1007361511052
- Description: The family Amphiliidae comprises nine genera and about 60 species. Only five species are found in southern Africa, three of which belong to the genus Amphilius (Skelton 1993). These soft-bodied catlets inhabit clear, fast flowing mountain streams where they live amongst cobbles, feeding predominantly on benthic invertebrates (Crass 1964, Skelton 1993). The Natal mountain catfish, A. natalensis Boulenger, 1917, is a small, nocturnal species with a restricted distribution along the eastern seaboard of southern Africa. It occurs in mountain streams from the Umkomaas River north to the Limpopo system in South Africa. It is also present in the Marozi River, a tributary of the Zambezi River in Zimbabwe and in the Ruo River, Malawi (Skelton 1984, 1993). Skelton (1993) suggested that predation by introduced trout species has led to scarcity of A. natalensis in many streams. In spite of this, no studies on the biology of this catfish species have been published. This study presents the first quantitative information on the biology of an amphiliid catfish, A. natalensis including gametogenesis, spawning seasonality, size-at-maturity, adult sex ratio and diet.
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- Date Issued: 1997
Policy Memo - Engineering hours of work
- Authors: NALEDI
- Date: 1997
- Subjects: NALEDI
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/151200 , vital:39038
- Description: The National Union of Metal Workers of South Africa (Numsa). following Cosatu, has since its foundation argued for a 40 hour week and a ban on overtime to increase employment. The goal of a shorter working week should not. however, limit itself to employment. Metal workers work long, hard hours, an average 49 hour week in 1995. (ILO.1996:334) Shift workers often work longer, with serious health and safety risks, including shorter lives. A poor and inefficient transport system cuts at least another 5 to 10 hours a week from the time urban africans spend away from home, community and leisure. (CSS. 1995)1 Workers too must have the right to a healthy work environment and proper access to leisure time and family. The organisation of working time is also important, impacting on the ability of workers to effectively access education and training.
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- Date Issued: 1997
Photosensitization reactions of neodymium, dysprosium and lutetium diphthalocyanine
- Authors: Nensala, Ngudiankama , Nyokong, Tebello
- Date: 1997
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/${Handle} , vital:57084 , xlink:href="https://doi.org/10.1016/S0277-5387(97)00045-4"
- Description: Photolysis, using a visible radiation, of diphthalocyanine complexes of NdIII, DyIII and LuIII ([Pc(−2)NdIIIPc(−2)]−, [Pc(−2)DyIIIPc(−2)]− and [Pc(−2)LuIIIPc(−2)]−, respectively) in the presence of pentachlorophenol (PCP) or SO2 results in the one-electron oxidation of the diphthalocyanine species to Pc(−1)NdIIIPc(−2), Pc(−1)DyIIIPc(−2) and Pc(−2)LuIIIPc(−2), respectively. The PCP is reductively dechlorinated to tetra- and trichlorophenols. The quantum yields for the photosensitization reactions are of the order 10−4.
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- Date Issued: 1997
Petrology and geochemistry of peridotite xenoliths from the Letlhakane kimberlites, Botswana
- Authors: Stiefenhofer, Johann , Viljoen, K S , Marsh, Julian S
- Date: 1997
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/149705 , vital:38876 , https://doi.org/10.1007/s004100050272
- Description: The diamondiferous Letlhakane kimberlites are intruded into the Proterozoic Magondi Belt of Botswana. Given the general correlation of diamondiferous kimberlites with Archaean cratons, the apparent tectonic setting of these kimberlites is somewhat anomalous. Xenoliths in kimberlite diatremes provide a window into the underlying crust and upper mantle and, with the aid of detailed petrological and geochemical study, can help unravel problems of tectonic setting.
- Full Text: false
- Date Issued: 1997