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An Investigation of the carbonatites of the Kaapvaal Craton and their tectonic context
Dissertation (MSc)--University of Pretoria, 2013.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2015
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| _version_ | 1867613666317172736 |
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| access_status_str | Open Access |
| author2 | Roberts, R.J. (James) |
| author_browse | Roberts, R.J. (James) |
| author_facet | Roberts, R.J. (James) |
| collection | Thesis |
| dc_rights_str_mv | © 2014 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc)--University of Pretoria, 2013. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/43297 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:39:46.144Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/43297 An Investigation of the carbonatites of the Kaapvaal Craton and their tectonic context Roberts, R.J. (James) emburger@gmail.com Burger, Erasmus Petrus UCTD Dissertation (MSc)--University of Pretoria, 2013. Carbonatites are exotic rocks which usually occur in discrete intrusions. Considering the association of carbonatites with rifting environments, this dissertation proposes that: carbonatites occur in extensional tectonic settings and therefore carbonatite occurrence can be used to constrain an extensional setting for related occurrences. In order to give context in which to consider this hypothesis, the formation of carbonatites is reviewed. This work favours the direct mantle melting model as it is most relevant and consistent with observations of Kaapvaal Craton carbonatites. However the liquid immiscibility model cannot be entirely rejected with current knowledge. The hypothesis is applied to the Bushveld Igneous Complex after providing evidence of the rift-carbonatite association. The Bushveld Igneous Complex is considered to have been emplaced in the same tectonic setting as carbonatites. Therefore the Bushveld Igneous Complex was emplaced in an extensional tectonic setting. Finally the carbonatites which are part of the Pilanesberg Alkaline Province are considered in order to test the hypothesis. This work finds that the Pilanesberg carbonatites do occur with other rift related magmatism during the break-up of Nuna (Columbia) and therefore the hypothesis is not rejected. This work offers reviews of basic carbonatite background, formation models and carbonatite occurrences on the Kaapvaal Craton. lk2014 Geology MSc Unrestricted 2015-01-19T12:13:25Z 2015-01-19T12:13:25Z 2014/12/12 2013 Dissertation Burger, EP 2013, An Investigation of the carbonatites of the Kaapvaal Craton and their tectonic context, MSc Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/43297> M14/9/146 http://hdl.handle.net/2263/43297 en © 2014 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD An Investigation of the carbonatites of the Kaapvaal Craton and their tectonic context |
| title | An Investigation of the carbonatites of the Kaapvaal Craton and their
tectonic context |
| title_full | An Investigation of the carbonatites of the Kaapvaal Craton and their
tectonic context |
| title_fullStr | An Investigation of the carbonatites of the Kaapvaal Craton and their
tectonic context |
| title_full_unstemmed | An Investigation of the carbonatites of the Kaapvaal Craton and their
tectonic context |
| title_short | An Investigation of the carbonatites of the Kaapvaal Craton and their
tectonic context |
| title_sort | investigation of the carbonatites of the kaapvaal craton and their tectonic context |
| topic | UCTD |
| url | http://hdl.handle.net/2263/43297 |