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The geology of the Rustenburg Fault
Dissertation (MSc)--University of Pretoria, 1997.
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| Format: | Thesis |
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University of Pretoria
2021
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| _version_ | 1867613678167130112 |
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| access_status_str | Open Access |
| author2 | Eriksson, Patrick George |
| author_browse | Eriksson, Patrick George |
| author_facet | Eriksson, Patrick George |
| collection | Thesis |
| dc_rights_str_mv | © 2021 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, 1997. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/82483 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:39:57.392Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| 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:2263/82483 The geology of the Rustenburg Fault Eriksson, Patrick George van der Merwe, Roelof Bumby, Adam John UCTD Rustenburg fault Dissertation (MSc)--University of Pretoria, 1997. The N.N.W.-S.S.E. striking Rustenburg Fault zone, in the western Transvaal Basin, South Africa, has been mapped, in order to unravel its tectonic history. Thickness differences in the Daspoort Formation of the Pretoria Group on opposite sides of the Fault suggest that the Fault was active during Pretoria Group sedimentation, with normal faulting producing localised second-order basins on the down-thrown side of the Fault. In post-Pretoria Group times, but before the intrusion of the Bushveld Complex at ~ 2050 Ma, the area surrounding the Fault zone underwent two compressive events. The first was directed N .E. - S.W., producing S.E.-N.W. trending folds, and the second was directed N.W.-S.E., producing N.E.-S.W. trending folds. The second set of folds refolded the first set to form typical transitional Type 1-Type 2 interference folding, and this compression ultimately caused reactivation of the Rustenburg Fault, so that dextral strike-slip movement displaced the Pretoria Group sediments by up to 10.6 km. The subsequent intrusion of the Bushveld Complex into the adjacent strata intensely recrystallised, and often assimilated, the strata along the Fault zone. The fault rocks within the Fault zone were also recrystallised, destroying any pre-existing tectonic fabric. Locally, the Fault zone has been assimilated by the Bushveld Comnlex After the intrusion of the Bushveld Complex, little movement has occurred along the Fault, especially where the Fault passes under areas occupied by the Bushveld Complex. It is thought that the crystallisation of the Bushveld Complex has rheologically strengthened the neighbouring strata, preventing them from being refaulted. This model presented above is at variance with previous assumptions that continuous regional extension during Pretoria Group sedimentation culminated in the intrusion of the Bushveld Complex. Geology MSc Unrestricted 2021-11-02T10:19:39Z 2021-11-02T10:19:39Z 2021 1997 Dissertation * http://hdl.handle.net/2263/82483 © 2021 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 Rustenburg fault The geology of the Rustenburg Fault |
| title | The geology of the Rustenburg Fault |
| title_full | The geology of the Rustenburg Fault |
| title_fullStr | The geology of the Rustenburg Fault |
| title_full_unstemmed | The geology of the Rustenburg Fault |
| title_short | The geology of the Rustenburg Fault |
| title_sort | geology of the rustenburg fault |
| topic | UCTD Rustenburg fault |
| url | http://hdl.handle.net/2263/82483 |