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Aspects of the geochemistry of Onverwacht Group lavas from the Barberton Greenstone Belt
Bibliography: pages 225-253.
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| Main Author: | |
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| Format: | Thesis |
| Language: | English |
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Department of Geological Sciences
2016
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| _version_ | 1867613301400141825 |
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| access_status_str | Open Access |
| author | Smith, Hudson Stuart |
| author_browse | Smith, Hudson Stuart |
| author_facet | Smith, Hudson Stuart |
| author_sort | Smith, Hudson Stuart |
| collection | Thesis |
| description | Bibliography: pages 225-253. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/17780 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:57.504Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Geological Sciences |
| publisherStr | Department of Geological Sciences |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/17780 Aspects of the geochemistry of Onverwacht Group lavas from the Barberton Greenstone Belt Smith, Hudson Stuart Geochemistry Bibliography: pages 225-253. The 3540 million year old komatiitic and tholeiitic lavas in the Onverwacht Group (Barberton greenstone belt) crop out in the rugged terrain of the eastern Transvaal lowveld. The results of an investigation into the geochemistry of the lavas, mainly from the three lower Formations of the Onverwacht Group - the Lower Ultramafic Unit (LUU) - are reported. While the lavas generally show excellent textural preservation, their primary phases have usually been reconstituted to greenschist facies mineral assemblages. Although original phenocryst phases are often pseudomorphed, they can still be identified from occasionally preserved relict grains and from the secondary mineral assemblages. In this way all the major phases that occur in the various lava types could be identified. However, before the geochemical data could be used to examine the effects of partial melting and/or crystal fractionation processes in the development of the magma compositions, it was necessary to investigate which elements had been redistributed by later metamorphic and other alteration events that have occurred in the history of the lavas. 2016-03-15T07:10:46Z 2016-03-15T07:10:46Z 1980 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/17780 eng application/pdf application/pdf Department of Geological Sciences Faculty of Science University of Cape Town |
| spellingShingle | Geochemistry Smith, Hudson Stuart Aspects of the geochemistry of Onverwacht Group lavas from the Barberton Greenstone Belt |
| thesis_degree_str | Doctoral |
| title | Aspects of the geochemistry of Onverwacht Group lavas from the Barberton Greenstone Belt |
| title_full | Aspects of the geochemistry of Onverwacht Group lavas from the Barberton Greenstone Belt |
| title_fullStr | Aspects of the geochemistry of Onverwacht Group lavas from the Barberton Greenstone Belt |
| title_full_unstemmed | Aspects of the geochemistry of Onverwacht Group lavas from the Barberton Greenstone Belt |
| title_short | Aspects of the geochemistry of Onverwacht Group lavas from the Barberton Greenstone Belt |
| title_sort | aspects of the geochemistry of onverwacht group lavas from the barberton greenstone belt |
| topic | Geochemistry |
| url | http://hdl.handle.net/11427/17780 |
| work_keys_str_mv | AT smithhudsonstuart aspectsofthegeochemistryofonverwachtgrouplavasfromthebarbertongreenstonebelt |