List of Titles

The effects of relative speed on selected physiological, kinematic and psychological responses at walk-to-run and run-to-walk interfaces.

- Candler, Paul David

Authors: Candler, Paul David
Date: 1987
Subjects: Walking -- Physiological aspects , Running -- Physiological aspects
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:5164 , http://hdl.handle.net/10962/d1016081
Description: [Conclusions] l) The two forms of human locomotion, walking and running, are distinctly different and in evaluating these gait patterns consideration must be given to this fact. 2) The impression created by the energy cost curves, that there is a single locomotor interface for both walking and running is a false one . There are two distinctly different locomotor interfaces, the walk-to-run interface and the run-to-walk interface. The former appears to correspond with the "metabolic intersection point" and therefore has some metabolic significance. The latter appears to be merely an "overshoot" of the walk-to-run interface and presently has no apparent metabolic significance. 3) Because the walk-to-run interface speed corresponds with the intersection point of the energy cost curves, physiological responses to walking and running at this speed do not differ significantly. However, cadence and stride length patterns for these two locomotor patterns are distinctly different at this point. 4) The identification of single physiological or kinematic factors during perceptions of exertion in any given situation is an extremely difficult if not impossible task. Perceived exertion should therefore be considered a multi-factorial concept and should be evaluated as such. 5) The use of relative speed as a technique for reducing inter-subject variability in physiological and kinematic factors is worthless unless diverse ranges in morphological linearity are a characteristic of one's subject pool
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Date Issued: 1987

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The exploration and evaluation of groundwater units south and west of Graaf-Reinet, Cape Province, South Africa

- Parsons, Roger Paul

Authors: Parsons, Roger Paul
Date: 1987 , 2013-04-18
Subjects: Hydrogeology -- South Africa , Aquifers -- South Africa -- Graaff-Reinet , Groundwater -- South Africa -- Graaff-Reinet
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:4865 , http://hdl.handle.net/10962/d1007351 , Hydrogeology -- South Africa , Aquifers -- South Africa -- Graaff-Reinet , Groundwater -- South Africa -- Graaff-Reinet
Description: The investigation reported in the thesis concerns an area south and west of Graaff-Reinet, in the Cape Province. The research projec t identified the existence of four groundwater units. The aquifers predominantly occur in Beaufort Group sediments and the boundary of each unit is formed by dolerite intrusives or with topographical highs. The objective of the study was to quantitatively assess these units in terms of both quantity and quality for possible future development as a municipal supply for Graaff-Reinet. In order to achieve the objective, fieldwork was carried out involving a hydrocensus, geological mapping, drilling, aquifer testing and hydrochemical sampling. The analysis of these data revealed that the Sundays and Kamdeboo aquifer units are unsuitable for further development. The Moordenaars and Swart units, both of which produce good quality water, have a combined exploitation potential in the order of 30 000 m³ /d. , KMBT_363 , Adobe Acrobat 9.53 Paper Capture Plug-in
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Date Issued: 1987

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The fourteen last rondos of C P E Bach: an investigation into their historic position, their form and their style

- Lewis, Pauline Mary

Authors: Lewis, Pauline Mary
Date: 1987
Subjects: Bach, Carl Philipp Emanuel, 1714-1788 -- Criticism and interpretation
Language: English
Type: Thesis , Masters , MMus
Identifier: vital:2663 , http://hdl.handle.net/10962/d1004608
Description: This thesis deals with a set of compositions by C. P.E. Bach, referred to as "The Last Fourteen Rondos". Thirteen of these are contained in the collections of sonatas, fantasias and rondos for connoisseurs and music lovers. The fourteenth is a separate work, entitled "The Farewell From a Silbermann Clavier in the Form of a Rondo". After establishing the background and the history of these rondos, the thesis then proceeds to a detailed analysis of the various compositional aspects. First, it tries to explain the overall design of the rondos, a design which differs from that normally associated with rondo form. It then deals with the structure of the thematic material and shows Bach's preference for phrase parallelism and a relatively simple melodic and harmonic outline of the various subjects. Special chapters are devoted to the manner in which C.P.E. Bach treats the musical substance, namely, by means of Variation and by systematic development. A short chapter is then devoted to the fantasia sections, which are included into most of the rondos. It is in the field of harmony where C.P.E. Bach emerges as a most important forerunner of nineteenth century musical trends and, consequently, some detailed analyses form a major portion of the chapter dealing with harmony. Special attention is then given to the various aspects of C.P.E. Bach's style and, in particular, to the pianistic · traits. The thesis ends with a brief survey of the influence which C.P.E. Bach exerted on his contemporaries and on later composers.
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Date Issued: 1987

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The geology and alteration/mineralization of the Van Rooi's vley W/Sn deposit, Namaqua metamorphic complex, South Africa

- Smithies, Robert Hugh

Authors: Smithies, Robert Hugh
Date: 1987 , 2013-03-01
Subjects: Mineralogy -- South Africa , Geology -- South Africa -- Namaqualand
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:4924 , http://hdl.handle.net/10962/d1004526 , Mineralogy -- South Africa , Geology -- South Africa -- Namaqualand
Description: Scheelite, wolfram Ite and cassIterIte mIneralizat ion is hosted wIthin numerous quartz-tourmaline-feldspar-fluorite veins at Van Rooi's Vley, N.W. Cape Province . MineralizatIon and hydrothermal alteration within, and around, these veins is hIghly complex and reflects the intricate interaction of hydrotherma l activity upon a structurally deformed sequence of ProterozoIc med ium to high-grade gneisses. Four distinct stages of alteration and mineralization occurred, including a l ate 'epithermal stage'. Although the location of mineralization was strongly controlled by st ructure, the concentration of mineralizati on was controlled by physicochemical variables, of which host-rock geochemistry was particularly important . Further W/Sn mineralization occurs on a local scale, some of which is spatia lly related to minor leucogranite dykes. Leucogranite bodies are not uncommon within the region and some are enriched in Wand Sn. By comparing FIB ra tio s,W/Sn ratios, the alteration mineralogy, the ore mineralogy and the Fe-content of tourmaline, the deposits within the Van Rooi's Vley area can be placed into a 'proximal' to 'distal' classification, with respect to a common source of mineralizing hydrothermal fluids. The Van Rooi's Vley deposit, whilst affiliated to greisen-style deposits, represents a ' distal' quartz-vein lode deposit. , KMBT_363 , Adobe Acrobat 9.53 Paper Capture Plug-in
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Date Issued: 1987

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The interpersonal dimension of psychopathology

- O'Dowd, S A

Authors: O'Dowd, S A
Date: 1987
Subjects: Psychology, Pathological
Language: English
Type: Thesis , Masters , MA
Identifier: vital:2910 , http://hdl.handle.net/10962/d1002075
Description: It is argued that two large groups of disorders can be distinguished in the field of psychopathology, (1) which divide between them the psychoses, neuroses and personality disorders; ( 2) the dynamics of which are those of Klein's paranoid-schizoid and depressive positions, respectively; and (3) which are distinguished by nine basic contrasts in symptomatology and dynamics, all of which are expressive of the opposition self-centred/other-centred. These three hypotheses form the interpersonal model of psychopathology, and are supported by argument from works of Foulds, Jung, Abraham, Fairbairn, Klein, Angyal, Winnicott and Heidegger. It is suggested that the interpersonal model can facilitate the dialogue between psychoanalysis and phenomenology
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Date Issued: 1987

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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

- du Plessis, J R

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.
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Date Issued: 1987

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The new union subscriptions

- NUMSA

Authors: NUMSA
Date: Oct 1987
Subjects: NUMSA
Language: English
Type: text
Identifier: http://hdl.handle.net/10962/112732 , vital:33650
Description: THE Inaugural Congress of NUMSA decided that all members must pay a subscription of R1,00 per week. The Central Committee was given the power to decide when members should start paying the new subscription. The Central Committee has decided that all members of NUMSA must pay R1,00 per week union subscription from 1st October 1987. In some establishments, you may have to sign new stop- orders. NUMSA will demand from management that they automatically change the amount of the subscription. Some companies may refuse to do this and may ask you to sign a new stop-order. Discuss this with your organiser before you sign anything. In addition to the R1 per week for the union subscription, there will be 30c per week for benefit funds. An explanation of how all this money will be used is given in this pamphlet. Please make sure that you fully discuss this with all the members in your factory or workshop so that all NUMSA members are clear about the new subscriptions before the 1st of October 1987.
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Date Issued: Oct 1987

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The origins, development and demise of the South African Indian Council 1964-1983 : a sociological interpretation

- Desai, Ashwin

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.
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Date Issued: 1987

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The P.R.O. expert system shell

- Bradshaw, John

Authors: Bradshaw, John
Date: 1987 , 2013-04-03
Subjects: Expert systems (Computer science)
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:4617 , http://hdl.handle.net/10962/d1006302 , Expert systems (Computer science)
Description: This thesis reports the research which led to the development of the P.R .O. Expert System Shell. The P.R.O . System is primarily, though not exclusively , designed for use in ecological domains. In the light of two specific expert systems, The RCS (River Conservation Status) and the Aquaculture Systems, which were developed as part of this research, a number of areas of importance have been identified. The most significant of these is the need to handle uncertainty effectively. The style of knowledge representation to be implemented also plays an important role. After consulting the relevant literature and the available microcomputer expert system shells, a number of ideas have been included in the P.R.O. System. The P.R.O . System is a backward chaining, production system based expert system shell. It embodies a simple but effective method of handling uncertainty. An important feature of this method is that it takes cognizance of the different relative importances of the conditions which need to be satisfied before a conclusion can be reached. The knowledge base consists of more than rules and questions. It also contains meta-knowledge, which is used by the inference engine. The P.R.O. System has been designed to be of practical use. Its strongest recommendations are therefore, that the two non-trivial systems which have been implemented in it, have been accepted by the experts and their peers as systems which produce good, accurate answers . , KMBT_363 , Adobe Acrobat 9.53 Paper Capture Plug-in
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Date Issued: 1987

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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

- Field, Matthew

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
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Date Issued: 1987

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The piano sonatas of Muzio Clementi: an investigation into compositional aspects with special emphasis on developments in form and style

- Radloff, T E K

Authors: Radloff, T E K
Date: 1987
Subjects: Clementi, Muzio, 1752-1832 -- Sonatas, Piano
Language: English
Type: Thesis , Doctoral , PhD
Identifier: vital:2653 , http://hdl.handle.net/10962/d1002319
Description: This thesis follows on a number of studies all of which deal with selected schools of composition important in the development of the piano sonata. Muzio Clementi was one of the leading contemporaries of such great masters as Haydn. Mozart, Beethoven and Schubert, all of whom contributed greatly to the repertoire of piano sonatas. During his lifetime his reputation equalled that of his contemporaries and many of his sonatas were greatly admired by the young Beethoven. Clementi was born in Rome but spent the largest part of his Ii in London where he established himself as a multi-faceted musician, being engaged in many different fields connected with music: composer, teacher, performer, publisher and manufacturer of pianos. His sonatas form the most important part of his total creative output. While the earli works still follow principles typical of the middle classical period, his later sonatas belong to a different era and foreshadow the coming of romanticism. This thesis is devoted to a detailed survey of the changes that affect the form of the various movements. It shows the gradual change from tile simple compositional methods of the early works to the inherent logical process that characterises the sonatas of the later years The first part of the thesis culminates in findings that prove Clementi IS individuality and show that his enquiring spirit makes him an innovator of the first rank. The second major part of the thesis deals with the stylistic changes that take place within the various periods of Clementiis creative life. It summarises the main ingredients of his early music, critically evaluates the importance of various pianistic devices that play a leading role in works of the middle periods and finally shows the successful blending of inherited and new techniques in the last sonatas. The concluding section details the major points of the preceding investigations and presents a picture of Clementi's personality as it emerges through the medium of his solo keyboard sonatas.
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Date Issued: 1987

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The role of the self-concept in a system of guidance at the level of initial adolescence

- Hall, Deryck John

Authors: Hall, Deryck John
Date: 1987
Subjects: Self-perception in adolescence , Educational counseling
Language: English
Type: Thesis , Doctoral , PhD
Identifier: vital:1382 , http://hdl.handle.net/10962/d1001448
Description: Part One I A Perspective on Guidance II Concepts of Self This section is a review and discussion of the two conceptualizations which are fundamental to the research structure: guidance as an overall framework within which procedures are devised for the development of this understanding of the "self" . Part Two • III Didactic Discovery IV The Class Citation Award A way of thinking about an ~ducational approach which could generate a classroom mileu, where the in a practical ongoing process to encourage participation and CCA is the key~ote strategy involve the group in "self" and "other" awareness. Part Three V VI Experiment, Survey, Action Research Results, Reflections and Recommendations The three research methods employed to gather evidence of pupil awareness and its implications, with a discussion patterns of self~knowledge, and its effect on the NOTE: Constant reference to thi s page, and to page xxxii will enable the reader to view the thesis as a whole
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Date Issued: 1987

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The survival of Heliothis Armiger (Hübner) (Lepidoptera: Noctuidae) eggs on cotton plants in relation to simulated rain and overhead irrigation

- Basson, Nicolaas Cornelius Johannes

Authors: Basson, Nicolaas Cornelius Johannes
Date: 1987
Subjects: Helicoverpa armigera Lepidoptera
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:5598 , http://hdl.handle.net/10962/d1002048
Description: Crop pests are known to be adversely affected by rain. Because limited information on this aspect was available for Heliothis spp. occurring on cotton, this study was undertaken to examine the effect of water droplets from overhead irrigation and simulated rain on the survival of H. armiger eggs on cotton. Three aspects were examined: the effects of submersion, the physical impact of droplets on the eggs and the washing off of the eggs from cotton plants in the field. The first two aspects were examined in terms of the structure and respiratory system of the eggs, confirming that H. armiger eggs are able to survive initial wetting in the field. The wash-off of H. armiger eggs from cotton plants is explained in the light of the selection of oviposition sites by the moths, adhesion of the eggs to the plant parts and the dislodging and wash-off by water from simulated rain and overhead irrigation. The data are discussed in terms of the other mortality factors which occur in commercial cotton fields. All in all, it was found that while overhead irrigation should be taken into account in surveys of H. armiger for pest management purposes, it does not offer a viable control strategy and should not be investigated further
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Date Issued: 1987

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The tectono-metallogenesis during the irumide and pan-African events in South West Africa/Namibia

- Tregoning, Trevor Denzil

Authors: Tregoning, Trevor Denzil
Date: 1987 , 2013-03-05
Subjects: Orogeny -- Namibia , Ore deposits -- Namibia , Mines and mineral resources -- Namibia , Geodynamics , Rifts (Geology) -- Namibia
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:4922 , http://hdl.handle.net/10962/d1004490 , Orogeny -- Namibia , Ore deposits -- Namibia , Mines and mineral resources -- Namibia , Geodynamics , Rifts (Geology) -- Namibia
Description: A large portion of South west Africa/Namibia is underlain by 2 great orogens. They are the Irumide (Sinclair/Rehoboth) and Damara Orogenies. The L-shaped Irumide Province forms part of a belt which extends over the subcontinent from Namaqualand to as far as Zambia. The volcano-sedimentary sequences of the Irumide are believed to have formed in intracratonic rifts and pull-apart basins during the period 1400 to 900 Ma. The evolution of the NW trending Sinclair Group proceeded by means of 3 major cycles each beginning with the emplacement of basic to intermediate magmas followed by felsic ones. The cycle ended off with subsidence, deposition of immature clastic debris and final tilting of the volcano-clastic sequence. It was suggested that the extensive calc-alkaline lavas present, developed within a magmatic arc above a subduction zone, but this proposal has not been generally accepted. The NE trending Klein Aub-Witvlei Basins consist essentially of red bed alluvial fans and lacustrine sediments with minor volcanics near the base. The red beds and aeolian sediments were deposited in an arid climatic condition. The regional greenschist facies metamorphism and deformation is attributed to a major tectono-thermal event at 1100 Ma. The Damara Orogen (900 - 550 Ma) forms part of the Pan-African mobile belt system of global proportions. The NE trending intracontinental branch (aulacogen) and 2 coastal branches constitute a triple junction with its focal point near Swakopmund. The NE extension of the intracontinental belt has been linked with the Lufilian Arc hosting the renown Zambian Copper Belt deposits. In South West Africa/Namibia this belt hosts many different mineral occurrences which can be grouped into rift and collision related deposits. The tectonic history of the Damara Orogen supports a geodynamic-evolution-with-time hypothesis and represents a transitional phase in which limited Wilson Cycle Tectonics was active. The Theory of Mantle Advection is invoked to explain rifting, thinning and subsidence. Extensive ensialic rifting resulted in a relatively stable Northern Carbonate Platform and several deep troughs hosting turbiditic sequences. Crustal rupture in the Khomas Trough allowed for the emplacement of ocean floor tholeiites known as the Matchless Amphibolite Belt. Subsequent ocean closure and collision resulted in deformation, metamorphism and generation of predominantly S-type granites. The southern continental plate was partially overridden by the northern plate during final collision at 550 Ma. These low angle thrust faults allowed for the emplacement of the Naukluft Nappe Complex on top of younger Nama sediments. The break up of Gondwanaland during the Mesozoic with the splitting of the Atlantic Ocean was responsible for the intrusion of anorogenic alkaline ring complexes along the extension of the NE trending transform faults within the intracontinental branch of the Damara Orogen. A close relationship between the tectonic setting and mineral deposits has been recognized in both the Irumide and Damara Orogenies. In the Irumide, stratiform syngenetic copper deposits are hosted by alluvial fan, playa and lacustrine sediments. The uninterrupted sedimentation from the Irumide to Damara Orogen resulted in similar stratiform copper deposits during the early stages of rifting. In the Damara Orogen the rifting (extensional) phase is characterized by 4 main mineralizing systems: diagenetic/syngenetic (Kupferschiefer-type), epigenetic/hydrothermal Cu-Pb-Zn (Mississippi Valley-type), volcanogenic cupriferous pyrite (Besshi-type) and volcano-exhalative Pb-Zn (Red Sea-type). The collision (compressional) phase was accompanied by 4 main mineralizing processes: epigenetic/hydrothermal Cu-Pb-Zn, hydrotheral/metasomatic Sn-W-rare earth, metamorphogenic Au and U-bearing anatectic melts. The key to the selection of viable exploration targets lies in the understanding of the field evidence and the geodynamics modelling to explain the evolution of the orogen and its associated mineral deposits.
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Date Issued: 1987

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