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The upper division of the Witwatersrand system in the Virginia and Merrie-Spruit mining areas
Dissertation (MSc)--University of Pretoria, 1957.
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University of Pretoria
2013
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| _version_ | 1867613456984702976 |
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| access_status_str | Open Access |
| author2 | Willemse, J. |
| author_browse | Willemse, J. |
| author_facet | Willemse, J. |
| collection | Thesis |
| dc_rights_str_mv | © 1957 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, 1957. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/26430 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:36:26.674Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| 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:2263/26430 The upper division of the Witwatersrand system in the Virginia and Merrie-Spruit mining areas Willemse, J. upetd@up.ac.za Winter, Hendrik De la Rey Merrie-spruit mining areas Witwatersrand Virginia UCTD Dissertation (MSc)--University of Pretoria, 1957. This treatise provides a record of the stratigraphy and structure in the southernmost extension of the Witwatersrand System and is based on the results obtained from bore-hole cores and from detailed mapping underground. Several disconformities encountered in these sediments are interpreted as marginal disconformities of a geosynclinal basin. It is contended that the bankets were formed in neritic and littoral environments closely associated with profiles of equilibrium., such as disconformities, where conditions favour the concentration of heavy minerals, including gold and uraninite. The composite radiometric log of the area south of the Sand river, drawn up by Dr. D.J. Simpson in 1951, is revised by including into it the portion of the log of bore-hole K.A.2 in which the Intermediate Reefs occur. Chloritoid is confined to the Lower Footwall beds, the Khaki Shale Marker and the Upper Shale Marker. The variation of the optical properties of chloritic minerals indicate that a wide range of these minerals exist in the sediments. Pyritic stringers appear to be natural concentrations of such heavy minerals as pyrite, ilmenite, chromite and zircon. Heavy mineral investigations, to be of correlative value, in the case of the Witwatersrand System would require considerable basic research. Intrusive rocks have been classified under the following types ranging from the youngest to the oldest:- dolerite, epidiorite, uralite diabase, pyroxene diabase, chlorite diabase and Ventersdorp diabase. Geology unrestricted 2013-09-07T05:22:47Z 2013-07-29 2013-09-07T05:22:47Z 1957-01-02 1957 2013-07-19 Dissertation Winter, HD 1957, The upper division of the Witwatersrand system in the Virginia and Merrie-Spruit mining areas, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/26430 > E13/4/781/gm http://hdl.handle.net/2263/26430 http://upetd.up.ac.za/thesis/available/etd-07192013-172516/ © 1957 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 application/pdf application/pdf application/pdf application/pdf application/pdf University of Pretoria |
| spellingShingle | Merrie-spruit mining areas Witwatersrand Virginia UCTD The upper division of the Witwatersrand system in the Virginia and Merrie-Spruit mining areas |
| title | The upper division of the Witwatersrand system in the Virginia and Merrie-Spruit mining areas |
| title_full | The upper division of the Witwatersrand system in the Virginia and Merrie-Spruit mining areas |
| title_fullStr | The upper division of the Witwatersrand system in the Virginia and Merrie-Spruit mining areas |
| title_full_unstemmed | The upper division of the Witwatersrand system in the Virginia and Merrie-Spruit mining areas |
| title_short | The upper division of the Witwatersrand system in the Virginia and Merrie-Spruit mining areas |
| title_sort | upper division of the witwatersrand system in the virginia and merrie spruit mining areas |
| topic | Merrie-spruit mining areas Witwatersrand Virginia UCTD |
| url | http://hdl.handle.net/2263/26430 http://upetd.up.ac.za/thesis/available/etd-07192013-172516/ |