Geology of the central and southern domains of the Koras Group, northern Cape Province
- Authors: Sanderson-Damstra, Christopher Gerald
- Date: 1983 , 2013-04-17
- Subjects: Geology -- South Africa -- Cape of Good Hope
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5017 , http://hdl.handle.net/10962/d1006203 , Geology -- South Africa -- Cape of Good Hope
- Description: The Central and Southern Domains of the Koras Group, situated on the Doornberg Lineament, are the structurally preserved remnants of a once more widespread late-syntectonic cover sequence. Detailed examination of the field relationships, lithology and petrography together with new geochemical data (30 analyses) has resulted in the proposal of a new geological succession consisting mainly of two cycles of bimodal basaltic-rhyolitic volcanics with interbedded, immature conglomerates and lithic greywackes. These two cycles, named the Boomrivier and Leeudraai Formations, are overlain by the immature, polymictic orthoconglomerates and red arkosic sandstones of the Kalkpunt Formation. The first volcanic cycle commenced with the Lambrechtsdrif basaltic andesites and was followed, after a short hiatus, by the Swartkopsleegte rhyodacites. The second cycle comprises the Rouxville basalts and basaltic andesites and the Swartkop and Kenilworth rhyolites. Field evidence suggests that eruption of the rhyolitic and basaltic volcanics in the second cycle was contemporaneous. Geochemically, the volcanics can be classified as an "average-K" to high-K, tholeiitic, subalkaline association which exhibits general similarities to other Southern African bimodal associations e.g., the tholeiitic lavas of the Wilgenhoutsdrif Group. The Koras Group is petrologically similar to the Sinclair Sequence which is presently considered to be its coeval equivalent, but the dominantly calc-alkaline character of the Sinclair rocks distinguishes them from the dominantly tholeiitic Koras lavas. In a short literature review, the four main hypotheses for the petrogenesis of bimodal associations: liquid immiscibility, crystal fractionation, two-stage partial melting and separate magma sources, are described and the most feasible explanation for the origin of the Koras lavas is thought to be a "separate magma source" hypothesis in which two cycles of mantle-derived basalts and crustal-derived rhyolites were produced in a zone of high heat flow and erupted in an area of crustal weakness. The middle- or late-Proterozoic Koras Group was formed during unstable tectonic conditions, in a depositional setting that was probably controlled by late folding of the underlying pre-Koras sequences as well as the major strike-slip movement and subordinate dip-slip faulting in the Doornberg Lineament.
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- Date Issued: 1983
Les elements dramatiques dans les premiers romans (1939-1963) de Nathalie Sarraute
- Authors: O'Grady, Betty
- Date: 1983
- Subjects: Sarraute, Nathalie -- Criticism and interpretation , French fiction -- 20th century -- History and criticism
- Language: French
- Type: Thesis , Masters , MA
- Identifier: vital:3617 , http://hdl.handle.net/10962/d1006921 , Sarraute, Nathalie -- Criticism and interpretation , French fiction -- 20th century -- History and criticism
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- Date Issued: 1983
Metallogenetic evolution of the Canadian Cordilleran Orogen
- Authors: Mathe, H L M
- Date: 1983
- Subjects: Orogeny -- Canadian Cordillera , Plate tectonics -- Canadian Cordillera , Metallogeny -- Canadian Cordillera , Geology, Structural -- Canadian Cordillera
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5025 , http://hdl.handle.net/10962/d1006890
- Description: From Introduction: The Canadian Cordilleran Orogenic Belt forms part of the circum-Pacific orogenic zone. It underlies an area of about 1,54 million sq. kilometres, is over 2400 kilometres long and 800 kilometres wide. The region is characteristically mountainous, much of it glaciated and alpine, containing plateaux, trenches, valleys, and fjords. The mountains, in general, rise to elevations between 2100 m and 3600 m above sea level, although Mount Logan in the St. Elias Mountains attains an altitude of 6000 m. The Canadian Cordillera is divided into two dominant orogenic belts: the eastern Columbian Orogenic Belt comprising defonned miogeosynclinal rocks and the western Pacific Orogenic Belt comprising allochthonous eugeosynclinal rocks. The Cordillera is further subdivided into five longitudinal tectonic belts within which rocks are broadly similar in type, age, and history. These belts are, from east to west: the Rocky Mountain Belt, the Omineca Crystalline Belt, the Intermontane Belt, the Coast Plutonic Complex, and the Insular Belt (Wheeler et al., 1972a). The Canadian Cordillera is important in that it contains: one of the world's largest lead-zinc-silver mine, Sullivan; the second-largest molybdenum mine, Endako; one of the most important concentrations of porphyry copper deposits, Highland Valley; Canada's largest tungsten mines, Cantung and Mactung; and Canada's second-largest silver district, Keno Hill (Sutherland Brown et a1., 1971). In addition, it contains several large massive sulphide and lead-zinc deposits.
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- Date Issued: 1983
Metallogenic evolution of the southern Appalachian Orogenic Belt and Mississippi Valley
- Authors: Maassen, Larry W
- Date: 1983 , 2013-04-03
- Subjects: Metallogeny -- Appalachian Region , Metallogeny -- Mississippi River Valley , Plate tectonics -- Appalachian Region , Plate tectonics -- Mississippi River Valley
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5018 , http://hdl.handle.net/10962/d1006210 , Metallogeny -- Appalachian Region , Metallogeny -- Mississippi River Valley , Plate tectonics -- Appalachian Region , Plate tectonics -- Mississippi River Valley
- Description: Plate tectonic theory provides logical explanations for the major tectonic events in the eastern US during Paleozoic time. The details of these tectonic events are becoming more apparent with the accumulation of new data, especially radiometric age dates. When plate tectonic theory is applied to specific tectonic events for which there is no substantial evidence, such as intracontinental hotspot rifting environments and Precambrian subduction zones, the proposed models may become very speculative. A misconception concerning the geology of the central US is that this region is structurally stable. However, geologists are currently paying considerable attention to the interlocking network of faults that in a general way follow the 38th parallel of latitude from west-central Virginia into Central Missouri (and may extend farther to the east and west). Most of the displacement along this zone occurred during the Precambrian, but different parts have moved during several periods of post-Precambrian time. In the basement the lineament may be a wide fracture zone that extends deep into the crust and is thus responsible for the magmatic iron deposits of the Southeast Missouri and may be either directly or indirectly responsible for the localization of the Mississippi Valley type deposits that occur sporadically along its length. Whether or not plate-tectonic processes operated during the Precambrian is open to speculation and the lineament may or may not be related to plate tectonic activity, but it is obvious that throughout time inherent zones of weakness are important in the localization of ore deposits. The occurrence of several major mineral districts at the intersections of the 38th parallel lineament with other major structural features, particularly in some uplifted areas and fault zone intersections, suggests that other similar structural uplifts and fault-zone intersections should be investigated for undiscovered new districts or extensions of known districts. Small uneconomic mineral occurrences along fault zones intersecting the lineament may merit further examination as they may be indications of undiscovered deposits at depth. The overall tectonic environment in the Appalachian region was an important control on the localization of massive sulfide, gold, titanium, and tungsten deposits. The deposits occur in clusters, either in Late Precambrian spreading centers and associated rift systems related to the breakup of proto-Pangea, or in Eocambrian and Devonian low-potassium tholeiitic volcanic and plutonic rocks associated with the volcanic island arc systems which developed during the closing of the Iapetus Ocean. Feiss and Hauck (1980) are confident that moderate sized (1-10 million ton) massive sulfide deposits are yet to be found at depth in these regions of the southern Appalachians, but large (greater than 20 million ton) massive sulfide deposits are unlikely to exist. The Mississippi Valley carbonate-hosted deposits of lead-zinc-baritefluorite, that occur to some extent throughout the Paleozoic section, and the Silurian "Clinton" iron ores owe their origin and distribution to normal sedimentary and diagenetic processes resulting from the transgressions of the epeiric seas. Others, such as the residual deposits of managnese iron, and aluminum, owe their existence to the afore mentioned processes, but must also have had subsequent exposure to the concentrating mechanism of weathering in a stable environment. The Mississippi Valley type occur primarily around paleo-basement highs and paleoshorelines; therefore, the formation of domes and arches within the continental interior during bathygenic episodes was a major factor controlling the localization of these deposits. These broad upwarps were preferential sites for reefal development and facies changes, and, during epeirogenic periods, these positive features have resulted in erosion and karsting of the the carbonate rocks by meteoric waters and have thus been prepared for mineralization. Deposits of this type are most common below a pre-Middle Ordovician unconformity and should be sought along major domes and arches, and along major lineaments. The association of Applachian type deposits with arches is indeterminate because a structure as subtle as an arch would be difficult to detect following overprinting by the deformation of the Alleghany orogeny; however, there is no reason to suspect that this type of positive feature did not play a role in their location. In conclusion, plate movements were a major control on the Paleozoic tectonic history of the eastern US and were also the primary control on the localization of the base metal, gold, tungsten, chromite, and titanium deposits of the southern Appalachians. However, important sedimentary and diagenetic deposits were localized primarily by arch, dome, and basin development during bathygenic episodes. Whether these submergent episodes are the result of plate motion or whether plate motion is indirectly related to submergent episodes, as suggested by Sloss and Speed (1974), remains a problem that needs to be investigated and debated further. , KMBT_363 , Adobe Acrobat 9.53 Paper Capture Plug-in
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- Date Issued: 1983
Observation and processing of 2.3 GHz radio astronomy survey data
- Authors: Jonas, Justin Leonard
- Date: 1983 , 2013-04-15
- Subjects: Radio astronomy , Southern sky (Astronomy)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5505 , http://hdl.handle.net/10962/d1007280 , Radio astronomy , Southern sky (Astronomy)
- Description: The results of the second part of the Rhodes University Southern Sky Survey at 2.3GHz are presented. The area surveyed extends from 12hOO to 22hOO right ascension between declinations -63º and -24º. The observation technique and data reduction processes are analyzed. Digital data processing techniques used to enhance and display the data are dicussed. The results show that the Galactic emission extends as far as 40º latitude. Filamentary and loop-like structures are found superimposed on this general emission. Many of these features are unidentified as yet. A large region of emission is found to coincide with the Sco-Cen stellar association. A lower limit for the ionizing flux from the stars in the association is derived. All of the non-confused extragalactic sources with flux densities greater than O.5Jy are listed. The flux densities of these sources have been measured and any possible extended features are noted. , KMBT_363 , Adobe Acrobat 9.53 Paper Capture Plug-in
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- Date Issued: 1983
Some aspects of the advertising of professional accounting services
- Authors: Jackson, Robert David Charles
- Date: 1983
- Subjects: Accounting -- Marketing , Advertising -- Accounting
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:901 , http://hdl.handle.net/10962/d1006301 , Accounting -- Marketing , Advertising -- Accounting
- Description: This thesis examines the opinions of a sample of partners in accounting firms within the Republic of South Africa on the advertising of professional accounting services. The advertising of professional accounting services has become a highly contentious and complex topic. This thesis identifies eight issues related to the topic and examines the partners' opinions on these issues. In addition, the partners' opinions are examined in relation to the possible placing, means and methods of advertising of professional accounting services as well as the possible content of advertisements for professional accounting services. A methodology was designed to obtain the opinions of partners from all provinces of the Republic, from varying sizes of accounting firm, of varying ages and experience, and from both official language groups. The opinions were then analysed . The research findings show that a number of major differences of opinion exist within the profession, and that generally the present rules and regulations pertaining to advertising are in need of revision. This thesis makes a number of recommendations for revision as part of what should be an ongoing process. This thesis is only part of what needs to be done in this field. A great deal more research is imperative if a satisfactory set of rules and regulations for the advertising of professional accounting services is to be maintained.
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- Date Issued: 1983
Some theoretical considerations in applying cost-benefit analysis to Black education in South Africa
- Authors: Hosking, Stephen Gerald
- Date: 1983
- Subjects: Cost effectiveness , Black people -- Education -- South Africa -- Economic aspects , Education -- Economic aspects -- South Africa , Education -- Finance -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1047 , http://hdl.handle.net/10962/d1006150 , Cost effectiveness , Black people -- Education -- South Africa -- Economic aspects , Education -- Economic aspects -- South Africa , Education -- Finance -- South Africa
- Description: From introduction: In this thesis some of the economic theory underlying the application of cost-benefit analysis to education is considered with the view to discussing its relevance to the field of educational provision for Black people in South Africa. The fact that educational facilities available to Blacks are so vastly inferior to those of the Whites has given rise to virtual consensus that more has to be provided for the Black population. The economic implications of education are frequently cited to support this viewpoint. Using (a ) the theoretical bases established in chapters 1 and 2, (b) the review of the rate of return to education studies in chapter 3 and (c) the broader socio-economic considerations introduced in chapter 4, it is concluded that this viewpoint is not necessarily well founded in South Africa and that the potential for greater use of the techniques described, is far from exhausted.
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- Date Issued: 1983
The concept of grade in mineral deposits
- Authors: Esterhuizen, Anton G
- Date: 1983 , 2013-04-04
- Subjects: Mines and mineral resources , Ore deposits , Mineralogy , Geology, Economic
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5020 , http://hdl.handle.net/10962/d1006331 , Mines and mineral resources , Ore deposits , Mineralogy , Geology, Economic
- Description: The grade of a mineral deposit is determined by the effectiveness of a geological ore forming process, which is the result of the interaction between an ore forming mechanism and the environment in which it operates. Properties of a mineral deposit controlled by ore forming processes include the distribution, density and nature of ore minerals and gangue, and the metal content and impurities of the ore minerals. More efficient ore forming processes tend to develop in the larger mineralizing systems giving rise to richer deposits. As the geological environment within which a mineral deposit evolves becomes more complex a greater number of variables interact to determine the grade of the deposit. This is reflected in the greater variability of the grade distribution, resulting in greater difficulties in obtaining reliable estimates of the recoverable grade, and increased difficulties in the processing of ores. In response to economic fluctuations the working grade of heterogeneous orebodies, that form in geologically complex environments, can often be altered to ensure the continued viability of a mining venture. In contrast the evenly mineralized orebodies that tend to develop in geologically simple environments do not have this flexibility. All the important decisions in the mining industry, such as feasibility studies, choice of ~ining and processing methods, selection and planning, are made on the basis of, or are related to, grade estimates. If the geological controls of grade are fully understood, then it is possible to optimize the selection of the various mining alternatives, leading to the efficient exploitation of ore deposits.
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- Date Issued: 1983
The effect of the feminist movement on painting and sculpture in Europe and America after 1945
- Authors: Brooks, Jennifer
- Date: 1983
- Subjects: Painting, American -- 20th century Painting, European -- 20th century Sculpture, European -- 20th century Sculpture, American -- 20th century Feminism and art -- United States Feminism and art -- Europe
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2459 , http://hdl.handle.net/10962/d1007675
- Description: My investigation of women artists and their status in society today as a result of the feminist movement, revealed issues which, I felt, were multifaceted. This necessitated an exploration of many aspects in order to arrive at a fairly satisfactory conclusion as to whether the revolt and the aggression on the part of the feminists had borne any fruit, either generally in everyday life, or artistically. It has proved most stimulating and informative. I think that the need to assess oneself as a woman, working within a male-dominated creative environment is a very necessary process and one which has been most beneficial to me. The subsequent research revealed that a radical, thematic change had occured within the feminist movement at the start of the Eighties; a fact of which, till recently, I was largely unaware. What I discovered was that the militant, feminist approach of the Sixties and Seventies had given way to a more realistic involvement brought on partly by the economic recession and the effects as well of earlier feminist movements, leading to a relaxation on the part of the younger generation. The Violence had faded. Hard times curbed the excesses of the movement and took it along the road to practicality. Dovetailed to this and seeming to run concurrently was the phenomenon of the demise of the Modern Art Movement. These changes described were not only artistic and feminist, but cut right across the board. involving all facets of life. To take one as an example. the political with conservatism reinstating itself in America not merely as an alternative but as a worthwhile direction in itself. Other issues included the sociological, historical, biological, and cultural; all closely interwoven and therefore requiring some generalisations at times. Previous to becoming involved with my topic, I had been reacting to pre-conceived ideas laid on me as a student in the Sixties and Seventies - a militant, aggressive approach acquired as a protective shield, to deal with the masculine environment which denigrated in varying degrees mine and fellow female artists work, sometimes overtly, sometimes subconsciously. This discrimination, is usually denied as ever having existed by the men involved. It shows a lack of awareness of what, we, as female art students, were subjected to. This is one of the main reasons why I undertook this subject; partly out of interest and perhaps partly as some sort of catharsis.
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- Date Issued: 1983
The effect of tricyclic antidepressant drugs on the uptake and metabolism of serotonin by the pineal gland in organ culture
- Authors: Pillay, Manoranjenni
- Date: 1983 , 2013-04-05
- Subjects: Antidepressants , Pineal gland -- Metabolsim , Serotonin
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3828 , http://hdl.handle.net/10962/d1007053 , Antidepressants , Pineal gland -- Metabolsim , Serotonin
- Description: The effect of tricyclic antidepressants (TADs) on a variety of pineal functions was assessed. TADs affected the uptake of ³H-5HT into bovine pineal slices within a particular concentration range of these drugs, DESI, CLOMI and IMI appeared to inhibit uptake slightly, within a limited concentration range. Surprisingly, DESI appeared to be a relatively potent 5HT uptake inhibitor. The 5-HT re-uptake system in the pineal probably differes from that in brain tissue. TADs had a marked effect on the metabolism of ³H-5HT in the rat pineal, in an organ culture system, MEL and N-acetylserotonin synthesis increased for the first 11 days and thereafter a slight decrease was observed. HTOH and HIAA also showed an initial increase followed by a slight decrease in synthesis. The synthesis of MTOH and MIAA was decreased. The possibility that TADs could affect HIOMT and SNAT synthesis and thereby change the metabolic pattern of 5-HT was investigated. TADs appeared to stimulate SNAT initially and thereafter a slight decrease from peak activity was observed. This is probably due to stimulation followed by development of subsensitivity of β-receptors, HIOMT activity also appeared to be affected by TADs. The existence of two types of HIOMT is suggested. There is a possibility that these changes in the metabolism of 5-HT could be implicated in the mechanism of action of TADs. , KMBT_363 , Adobe Acrobat 9.53 Paper Capture Plug-in
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- Date Issued: 1983
The geological evolution and mineralised environments of the Tasman Geosyncline
- Authors: Pelham, D A
- Date: 1983 , 2013-04-03
- Subjects: Geosynclines -- Tasmania , Geology -- Tasmania , Ore deposits -- Tasmania , Mineralogy -- Tasmania
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5030 , http://hdl.handle.net/10962/d1006936 , Geosynclines -- Tasmania , Geology -- Tasmania , Ore deposits -- Tasmania , Mineralogy -- Tasmania
- Description: From introduction: The Tasman Geosyncline covers the eastern part of the continent of Australia, an area of over 2 million km'. The area has been a major source of Australian gold and tin production, and though it contains important base metal sulphide deposits, these are overshadowed in scale by the very large stratabound Proterozoic deposits (for example, Mt Isa, Broken Hill and McArthur River). This dissertation deals with the metallic mineral deposits of the Tasman Geosyncline, and as such does not include the extensive post Palaeozoic continental successions, with their important coal reserves, that overlie the deformed geosyncl i nal sequences.
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- Date Issued: 1983
The history of Theopolis Mission, 1814-1851
- Authors: Currie, Marion Rose
- Date: 1983
- Subjects: Barker, George, 1786-1861 , Missions -- South Africa -- Eastern Cape -- History , Khoikhoi (African people) -- History , Xhosa (African people) -- History , Cape of Good Hope (South Africa) -- History -- 1814-1851
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2536 , http://hdl.handle.net/10962/d1002388 , Barker, George, 1786-1861 , Missions -- South Africa -- Eastern Cape -- History , Khoikhoi (African people) -- History , Xhosa (African people) -- History , Cape of Good Hope (South Africa) -- History -- 1814-1851
- Description: This thesis is an investigation of the part played by Theopolis Mission on the Frontier, in the community (both secular and religious)and in the context of race relations. The Journal itself provides the terse, sometimes angry core of commentary on the total situation, and an attempt has been made, by setting it in a broader context, to dispel some of the myths which persist about the role of the Christian missionary, about Khoi Missions (in sharp contast to Xhosa Missions) and about Dr John Phllip. A clear picture has emerged of a people whose life-style, antecedents and history have been inadequately researched in tne period subsequent to 1800.
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- Date Issued: 1983
The London Missionary Society and education
- Authors: George, Ambrose C
- Date: 1983
- Subjects: London Missionary Society -- History Black people -- Education -- South Africa -- Western Cape -- History Missions -- South Africa -- Educational work -- History
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1883 , http://hdl.handle.net/10962/d1005910
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- Date Issued: 1983
The origins and subsequent development of Administration Boards
- Authors: Humphries, Richard
- Date: 1983
- Subjects: South Africa -- Politics and government -- 20th century , Influx control -- South Africa , Public administration -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2854 , http://hdl.handle.net/10962/d1006873 , South Africa -- Politics and government -- 20th century , Influx control -- South Africa , Public administration -- South Africa
- Description: Until the introduction of administration boards in 1972-1973, the responsibility for administering the urban black townships in "white" South Africa was vested with the municipalities as agents of the Department of Bantu Administration and Development. The establishment of administration boards to replace the municipalities' Non-European Affairs Departments reflected the determination of the Department of Bantu Administration and Development to secure tighter direct control over the implementation of policy, particularly that affecting influx control and labour regulation. The decision to end municipal control was made after the report of the Van Rensburg Inter-Departmental Committee of Inquiry into Control Measures, which reported in 1967. The report's concern that influx control was not working as intended, coupled with doubts about the political autonomy of Opposition controlled municipalities, which dated back to the 1950s, were the major reasons for the introduction of administration boards.
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- Date Issued: 1983
The question of validity in Vasari's art historical concept
- Authors: Gibb, Barry
- Date: 1983
- Subjects: Vasari, Giorgio, 1511-1574 -- Criticism and interpretation
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2465 , http://hdl.handle.net/10962/d1008574
- Description: From Introduction: Giorgio Vasari's first and second editions of his 'Lives of the Artists I appeared respectively in 1550 and 1568, just after the great period of Renaissance art in Florence and Rome had ended. As a practising Florentine architect, painter and sculptor who travelled extensively in Italy, sari could write with authority on the development of these arts throughout what he saw ~s the whole Renaissance period in that country, from the l ate 13th to the mid-16th century. Gathering information from all possible sources, his 'Lives' constitute the first comprehensive historical - critical survey of Italian Renaissance art. Much of their value resides in the first hand information they contain concerning the artists (Michelangelo in particular) who were his contemporaries, and in reflecting the aesthetic attitudes prevalent in a peak period in the history of art.
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- Date Issued: 1983
The relationship between psychological androgyny and attitudes towards women, self-actualization, and concepts of adjustment
- Authors: Finlay, Helen Ann
- Date: 1983
- Subjects: Androgyny (Psychology) , Sex differences (Psychology) , Self-actualization (Psychology)
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3139 , http://hdl.handle.net/10962/d1006964 , Androgyny (Psychology) , Sex differences (Psychology) , Self-actualization (Psychology)
- Description: In accordance with American findings, it was proposed that androgynous individuals would be more liberal in their attitudes towards women and more self-actualizing than sex-typed individuals, and that they would tend to conceptualize the well-adjusted person as androgynous, while the sex-typed individual would tend to conceptualize such a person as masculine. It was further hypothesized that sex differences in favour of the female subjects would be found on the first two variables. The Bern Sex-Role Inventory, Shostrom's Personal Orientation Inventory and Spence and Helmreich's Attitudes Toward Women Scale were applied to 192 school counsellors in training and in the field. The hypotheses regarding an androgynous as opposed to a sex-typed orientation on the variables attitudes toward women and self-actualization were not supported; nor were sex-typed individuals found to conceptualize a well-adjusted person as masculine . Sex differences in favour of female subjects were found on the Attitudes Toward Women Scale and on some of the Personal Orientation Inventory scales, and androgynous subjects were found to hold an androgynous model of adjustment.
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- Date Issued: 1983
The significance of unconformities in the development of Witwatersrand gold and uranium placers
- Authors: Beater, Christian Douglas
- Date: 1983 , 2013-04-03
- Subjects: Placer deposits , Gold ores -- Geology -- South Africa -- Witwatersrand , Uranium ores -- Geology -- South Africa -- Witwatersrand
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4925 , http://hdl.handle.net/10962/d1004535 , Placer deposits , Gold ores -- Geology -- South Africa -- Witwatersrand , Uranium ores -- Geology -- South Africa -- Witwatersrand
- Description: Most of the economic gold and uranium placers are developed on low angle disconformities in the Central Rand Group and concentrations of gold and uranium are usually at their optimum on unconformity surfaces. Examples include the Kimberley Reef and South Reef of the East Rand, the Main Reef Leader of the Central Rand, the Carbon Leader of the Carletonville goldfield, the Vaal Reef of the Klerksdorp goldfield and the Basal/Steyn placers of the Welkom goldfield. The individual goldfields represent fluvial fans which are composed of a large number of tectonogenetic sedimentary packages separated by unconformities. The tectonic responses between cycles of sedimentation produced unconformities and tectonically controlled cyclic sedimentation is one of the key factors culminating in the preparation and deposition of auriferous placers within the Witwatersrand succession. Unconformities, which represent breaks in sedimentation, result in the preconditioning of palaeosurfaces and redistribution of sediments and heavy minerals on them. Winnowing of sands produced heavy mineral residual accumulations on erosion surfaces which were generally preserved by small-pebble lags or algal mats. Reworking of units truncated by the unconformities provided additional gold, uranium and heavy minerals to unconformity surfaces.
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- Date Issued: 1983
The thermodynamics of binary liquid mixtures
- Authors: Scoones, Brett Warren Hamilton
- Date: 1983 , 2013-03-15
- Subjects: Thermodynamics , Thermodynamics -- Tables , Solution (Chemistry) , Liquids
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4392 , http://hdl.handle.net/10962/d1005893 , Thermodynamics , Thermodynamics -- Tables , Solution (Chemistry) , Liquids
- Description: A systematic study of the excess thermodynamic properties of two-ring compounds and n-alkanes was conducted. The excess enthalpies were determined at 288,15 K and 298,15 K by using a flow microcalorimetric technique. The excess volumes of tetralin and cycloalkanes, and tetralin and --alkans at 288,15 K and 298,15 K were determined by using a vibrating tube densitometer. The results showed trends relating to the size and shape of the n-alkane and cycloalkan molecules. The theory developed by Flory was applied to the decalin + cycloalkane and + n-alkane systems and this gave qualitative predictions of the excess enthalpies from the excess volumes and vice versa. , KMBT_363 , Adobe Acrobat 9.53 Paper Capture Plug-in
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- Date Issued: 1983