Volcanic rocks of the Witwatersrand Triad, South Africa. II: petrogenesis of mafic and felsic rocks of the Dominion Group
- Marsh, Julian S, Bowen, Michael P, Rogers, N W, Bowen, Teral B
- Authors: Marsh, Julian S , Bowen, Michael P , Rogers, N W , Bowen, Teral B
- Date: 2003
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/140443 , vital:37889 , https://doi.org/10.1016/0301-9268(89)90075-2
- Description: A bimodal suite of volcanic rocks builds the bulk of the Dominion Group which, with an age of ∼ 2.72 Ga, is the oldest cover sequence overlying the granite-greenstone Archaean basement of the Kaapvaal craton in the western Transvaal, South Africa. The basic lavas are relatively rich in SiO2 (50–58%) and aphyric and exhibit a large compositional range. This variation is typically tholeiitic in that it is characterized by strong enrichment of Ti, Fe, and V in differentiated lavas.
- Full Text: false
- Date Issued: 2003
- Authors: Marsh, Julian S , Bowen, Michael P , Rogers, N W , Bowen, Teral B
- Date: 2003
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/140443 , vital:37889 , https://doi.org/10.1016/0301-9268(89)90075-2
- Description: A bimodal suite of volcanic rocks builds the bulk of the Dominion Group which, with an age of ∼ 2.72 Ga, is the oldest cover sequence overlying the granite-greenstone Archaean basement of the Kaapvaal craton in the western Transvaal, South Africa. The basic lavas are relatively rich in SiO2 (50–58%) and aphyric and exhibit a large compositional range. This variation is typically tholeiitic in that it is characterized by strong enrichment of Ti, Fe, and V in differentiated lavas.
- Full Text: false
- Date Issued: 2003
Geochemical constraints on coupled assimilation and fractional crystallization involving upper crustal compositions and continental tholeiitic magma
- Authors: Marsh, Julian S
- Date: 2002
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/140432 , vital:37888 , https://doi.org/10.1016/0012-821X(89)90021-6
- Description: The commonly analyzed trace elements in tholeiites can be subdivided into three groups depending on their sense of enrichment or depletion in upper continental crust in relation to fractional crystallization. Lithophile incompatible elements are enriched in crustal rocks and by fractional crystallization, whereas compatible transition elements such as Ni and Cr are depleted. A small third group comprising Ti, V, Fe, and sometimes P, enrich with crystallization but are depleted in the crust.
- Full Text: false
- Date Issued: 2002
- Authors: Marsh, Julian S
- Date: 2002
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/140432 , vital:37888 , https://doi.org/10.1016/0012-821X(89)90021-6
- Description: The commonly analyzed trace elements in tholeiites can be subdivided into three groups depending on their sense of enrichment or depletion in upper continental crust in relation to fractional crystallization. Lithophile incompatible elements are enriched in crustal rocks and by fractional crystallization, whereas compatible transition elements such as Ni and Cr are depleted. A small third group comprising Ti, V, Fe, and sometimes P, enrich with crystallization but are depleted in the crust.
- Full Text: false
- Date Issued: 2002
Fundraising function for the Sounds of the Fifties
- Date: 1989
- Subjects: uncatalogued
- Type: Image
- Identifier: http://hdl.handle.net/10962/125944 , vital:35835 , RHPC-008
- Description: An East London vocal group at a fundraising function for the Sounds of the Fifties at Den Qeqe Stadium. , Use of this resource is governed by the terms and conditions of the Creative Commons "Attribution-NonCommercial-ShareAlike" License (http://creativecommons.org/licenses/by-nc-sa/2.0/)
- Full Text: false
- Date Issued: 1989
- Date: 1989
- Subjects: uncatalogued
- Type: Image
- Identifier: http://hdl.handle.net/10962/125944 , vital:35835 , RHPC-008
- Description: An East London vocal group at a fundraising function for the Sounds of the Fifties at Den Qeqe Stadium. , Use of this resource is governed by the terms and conditions of the Creative Commons "Attribution-NonCommercial-ShareAlike" License (http://creativecommons.org/licenses/by-nc-sa/2.0/)
- Full Text: false
- Date Issued: 1989
Members of the Executive Committee of the SA Industrial and Arts Exhibition Grahamstown 1898-9
- Date: 1989
- Subjects: Industrial arts -- Exhibitions -- Committees -- Photographs
- Type: still image
- Identifier: http://hdl.handle.net/10962/51668 , vital:26117 , PIC/M 7400 , BRN 152925 , This image is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017.
- Description: Photograph of the Members of the Executive Committee of the SA Industrial and Arts Exhibition Grahamstown 1898-9
- Full Text: false
- Date Issued: 1989
- Date: 1989
- Subjects: Industrial arts -- Exhibitions -- Committees -- Photographs
- Type: still image
- Identifier: http://hdl.handle.net/10962/51668 , vital:26117 , PIC/M 7400 , BRN 152925 , This image is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017.
- Description: Photograph of the Members of the Executive Committee of the SA Industrial and Arts Exhibition Grahamstown 1898-9
- Full Text: false
- Date Issued: 1989
Oxygen isotope geochemistry of the Mesozoic volcanics of the Etendeka Formation, Namibia
- Harris, Chris, Smith, H Stuart, Milner, Simon C, Erlank, Anthony J, Duncan, Andrew R, Marsh, Julian S, Ikin, Nicholas P
- Authors: Harris, Chris , Smith, H Stuart , Milner, Simon C , Erlank, Anthony J , Duncan, Andrew R , Marsh, Julian S , Ikin, Nicholas P
- Date: 1989
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143272 , vital:38219 , https://doi.org/10.1007/BF00371087
- Description: The Etendeka Formation volcanics consist of a bimodal association of basalts and quartz latites. Forty three new whole rock oxygen isotope analyses are reported for all the major magma types. All the rocks except a minor suite of dolerites have higher δ18O values than normal mantle. The basic rocks (average of 29=8.8‰) have significantly different δ18O to the acid rocks (average of 10=14.4‰). These data are apparently consistent with previously published petrogenetic models, which propose that the basalts were affected by crustal contamination and that the quartz latites are crustally derived.
- Full Text: false
- Date Issued: 1989
- Authors: Harris, Chris , Smith, H Stuart , Milner, Simon C , Erlank, Anthony J , Duncan, Andrew R , Marsh, Julian S , Ikin, Nicholas P
- Date: 1989
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143272 , vital:38219 , https://doi.org/10.1007/BF00371087
- Description: The Etendeka Formation volcanics consist of a bimodal association of basalts and quartz latites. Forty three new whole rock oxygen isotope analyses are reported for all the major magma types. All the rocks except a minor suite of dolerites have higher δ18O values than normal mantle. The basic rocks (average of 29=8.8‰) have significantly different δ18O to the acid rocks (average of 10=14.4‰). These data are apparently consistent with previously published petrogenetic models, which propose that the basalts were affected by crustal contamination and that the quartz latites are crustally derived.
- Full Text: false
- Date Issued: 1989
Sounds of the Fifties project musicians widows in Johannesburg
- Date: 1989
- Subjects: uncatalogued
- Type: Image
- Identifier: http://hdl.handle.net/10962/126020 , vital:35844 , RHPC-017
- Description: Sounds of the Fifties Project musicians widows with Richard Hatana at Queeneth Ndaba's home in Johannesburg. , Use of this resource is governed by the terms and conditions of the Creative Commons "Attribution-NonCommercial-ShareAlike" License (http://creativecommons.org/licenses/by-nc-sa/2.0/)
- Full Text: false
- Date Issued: 1989
- Date: 1989
- Subjects: uncatalogued
- Type: Image
- Identifier: http://hdl.handle.net/10962/126020 , vital:35844 , RHPC-017
- Description: Sounds of the Fifties Project musicians widows with Richard Hatana at Queeneth Ndaba's home in Johannesburg. , Use of this resource is governed by the terms and conditions of the Creative Commons "Attribution-NonCommercial-ShareAlike" License (http://creativecommons.org/licenses/by-nc-sa/2.0/)
- Full Text: false
- Date Issued: 1989
Chris McGregor playing Piano with three saxophonists
- Authors: Girou, Frédéric
- Subjects: Jazz , Jazz musicians , McGregor, Chris -- 1936-1990 , Shepp, Archie , Williams, Franck , Juritz, Robbie , Saxophonist , Saxophone , Piano , Jazz concert
- Type: Image
- Identifier: vital:13796 , http://hdl.handle.net/10962/d1001388 , Jazz , Jazz musicians , McGregor, Chris -- 1936-1990 , Shepp, Archie , Williams, Franck , Juritz, Robbie
- Description: Black and white photo (front and back) of Chris McGregor playing with 3 saxophonists (from left to right: Robbie Juritz, Franck Williams and Archie Shepp). The performance took place during the 3rd Brotherhood "Peune" (?) in 1989. There is also a sticker with Chris McGregor's postal address in France at the back of the photo.
- Full Text: false
- Authors: Girou, Frédéric
- Subjects: Jazz , Jazz musicians , McGregor, Chris -- 1936-1990 , Shepp, Archie , Williams, Franck , Juritz, Robbie , Saxophonist , Saxophone , Piano , Jazz concert
- Type: Image
- Identifier: vital:13796 , http://hdl.handle.net/10962/d1001388 , Jazz , Jazz musicians , McGregor, Chris -- 1936-1990 , Shepp, Archie , Williams, Franck , Juritz, Robbie
- Description: Black and white photo (front and back) of Chris McGregor playing with 3 saxophonists (from left to right: Robbie Juritz, Franck Williams and Archie Shepp). The performance took place during the 3rd Brotherhood "Peune" (?) in 1989. There is also a sticker with Chris McGregor's postal address in France at the back of the photo.
- Full Text: false
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