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A Metamorphic Study of Pretoria Group Sediments Found at the Dwarsrivier Pass, Bushveld Igneous Complex, South Africa
Dissertation (MSc)--University of Pretoria, 2019.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2020
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| _version_ | 1867613509929402368 |
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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 | © 2019 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, 2019. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/76009 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:37:17.367Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| 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:2263/76009 A Metamorphic Study of Pretoria Group Sediments Found at the Dwarsrivier Pass, Bushveld Igneous Complex, South Africa Roberts, R.J. (James) nicholastweedief@gmail.com Fraser, Nicholas Tweedie UCTD Geology Metamorphism Bushveld Igneous Complex Dwarsrivier Pass Petrology Natural and agricultural sciences theses SDG-09 Natural and agricultural sciences theses SDG-12 Natural and agricultural sciences theses SDG-15 Dissertation (MSc)--University of Pretoria, 2019. The study takes place in the Dwarsrivier area which lies on the border between Mpumalanga and Limpopo, to the North-West of Lydenberg, at an exposed road cutting. Within the road cutting, there is a unique portion of exposed rock which is light in colour and identified as a calc-silicate. The calc-silicate material is present as a package of rock and is surrounded top and bottom by pyroxenite. The surrounding rock belongs to the Bushveld Igneous Complex (BIC), which is the largest known layered intrusion on the planet and is host to numerous mines. The sample area is within the Critical Zone of the BIC and the host rock consists of pyroxenite which is crystalline and mafic. The calc-silicate package originates from the Pretoria Group sediments, which hosts the BIC, and has undergone varying degrees of metamorphism and mineralisation. The metamorphism formed and allowed for the preservation of two rare minerals, namely wüstite and chlorospinel. Numerous tests were performed on the samples, including SEM point scans to identify these rare minerals and to better understand how the calc-silicate package was preserved in the BIC. A model was created to explain the occurrence of the calc-silicate slab and surrounding features. The previous model involved the slab rising up through the BIC, but the proposed model in this thesis is that the calc-silicate was part of the roof rock which then delaminated, and subducting into the ductile magma of the BIC. bs2026 Geology MSc Unrestricted SDG-09: Industry, innovation and infrastructure SDG-12: Responsible consumption and production SDG-15: Life on land 2020-09-01T06:28:23Z 2020-09-01T06:28:23Z 2020 2019 Dissertation Fraser, NT 2019, A Metamorphic Study of Pretoria Group Sediments Found at the Dwarsrivier Pass, Bushveld Igneous Complex, South Africa, MSc Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/76009> S2020 http://hdl.handle.net/2263/76009 en © 2019 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 Geology Metamorphism Bushveld Igneous Complex Dwarsrivier Pass Petrology Natural and agricultural sciences theses SDG-09 Natural and agricultural sciences theses SDG-12 Natural and agricultural sciences theses SDG-15 A Metamorphic Study of Pretoria Group Sediments Found at the Dwarsrivier Pass, Bushveld Igneous Complex, South Africa |
| title | A Metamorphic Study of Pretoria Group Sediments Found at the Dwarsrivier Pass, Bushveld Igneous Complex, South Africa |
| title_full | A Metamorphic Study of Pretoria Group Sediments Found at the Dwarsrivier Pass, Bushveld Igneous Complex, South Africa |
| title_fullStr | A Metamorphic Study of Pretoria Group Sediments Found at the Dwarsrivier Pass, Bushveld Igneous Complex, South Africa |
| title_full_unstemmed | A Metamorphic Study of Pretoria Group Sediments Found at the Dwarsrivier Pass, Bushveld Igneous Complex, South Africa |
| title_short | A Metamorphic Study of Pretoria Group Sediments Found at the Dwarsrivier Pass, Bushveld Igneous Complex, South Africa |
| title_sort | metamorphic study of pretoria group sediments found at the dwarsrivier pass bushveld igneous complex south africa |
| topic | UCTD Geology Metamorphism Bushveld Igneous Complex Dwarsrivier Pass Petrology Natural and agricultural sciences theses SDG-09 Natural and agricultural sciences theses SDG-12 Natural and agricultural sciences theses SDG-15 |
| url | http://hdl.handle.net/2263/76009 |