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Grant Cawthorn Bushveld Complex

Emplacement and Crystallization Time for the Bushveld Complex

The Bushveld Complex (BC) is a large layered intrusion,SETTING AND STRATIGRAPHY OF emplaced into a stable cratonic setting. It has been considered an intrusive equivalent of a continental floodTHE BUSHVELD COMPLEX basalt province, and inferred to be related to a mantle The BC was emplaced into the Kaapvaal craton at plume (Hatton, 1995).

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Origin of the Merensky Pegmatitic Pyroxenite, Bushveld Complex

The feldspathic pegmatitic pyroxenite associated with the platinum mineralization of the Merensky Reef, Bushveld Complex, has been extensively studied, because it has often been considered to be fundamentally interrelated to the mineralization itself.

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The Merensky Reef, Bushveld Complex: Mixing of Minerals ...

The Merensky Reef, Bushveld Complex: Mixing of Minerals Not Mixing of Magmas ... R. Grant Cawthorn School of Geosciences, University of the Witwatersrand, Private Bag 3, Wits 2050, South Africa. Search for other works by this author on: GSW. Google Scholar. F. Johan Kruger. F. Johan Kruger Hugh Allsopp Laboratory, University of the Witwatersrand, Private Bag 3, Wits

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Grant Cawthorn Bushveld Complex - haagdeko.de

The 2 ga bushveld complex is the largest layered mafic intrusion in the world, covering over 65 000 km 2 in areat ranges in thickness from about 7 to 9 km and is divided into the eastern, the western including the far western, the northern including the villa nora area and the hidden southern limb fig, eales and cawthorn, 1996e stratigraphy of the intrusion is divided into.

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R. Grant Cawthorn - ResearchGate

R. Grant Cawthorn The Pilanesberg Complex (South Africa) is one of the world's largest but least studied alkaline complexes. It consists of trachytes, phonolites, syenites and nepheline syenites...

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The Bushveld Complex, South Africa SpringerLink

19/05/2015  Cawthorn RG (2013b) Rare earth element abundances in apatite in the Bushveld Complex—a consequence of the trapped liquid shift effect. Geology 41:603–606 Google Scholar Cawthorn RG, Ashwal LD (2009) Origin of anorthosite and magnetite layers in the Bushveld Complex, constrained by major element compositions of plagioclase.

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The Platinum Group Element Deposits of the Bushveld ...

By R. Grant Cawthorn School of Geosciences, University of the Witwatersrand, Private Bag 3, Johannesburg 2050, South Africa; E-mmail: [email protected] There are enough platinum group element deposits in the Bushveld Complex in South Africa to supply world demands for many decades or even a century using current mining techniques.

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grant cawthorn bushveld complex - MC World

grant cawthorn bushveld complex - ciaacademy.co.za. Shelembe;R.Grant Cawthorn; -2009S1 >At Eastern Platinum Mine in the western Bushveld ComPlex,the entire Merensky Emplacement and Crystallization Time for dylan . JOURNAL OF PETROLOGY VOLUME 39 NUMBER 9 PAGES 16691687 1998 Emplacement and Crystallization Time for the Bushveld Complex R. GRANT CAWTHORN . R. Grant Cawthorn

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Emplacement and Crystallization Time for the Bushveld Complex

the Bushveld Complex R. GRANT CAWTHORN1* AND FEODOR WALRAVEN2 1DEPARTMENT OF GEOLOGY, UNIVERSITY OF THE WITWATERSRAND, PO WITS, 2050, SOUTH AFRICA 2924 KEYTER STREET, DASPOORT, 0082, SOUTH AFRICA RECEIVED JULY 20, 1997; REVISED TYPESCRIPT ACCEPTED APRIL 16, 1998 The Bushveld Complex formed by the crystallization of

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Emplacement and Crystallization Time for the Bushveld Complex

R. Grant Cawthorn, Feodor Walraven, Emplacement and Crystallization Time for the Bushveld Complex, Journal of Petrology, Volume 39, Issue 9, September 1998, Pages 1669–1687, ...

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Grant Cawthorn Bushveld Complex - haagdeko.de

The 2 ga bushveld complex is the largest layered mafic intrusion in the world, covering over 65 000 km 2 in areat ranges in thickness from about 7 to 9 km and is divided into the eastern, the western including the far western, the northern including the villa nora area and the hidden southern limb fig, eales and cawthorn, 1996e stratigraphy of the intrusion is divided into.

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The Merensky Reef, Bushveld Complex: Mixing of Minerals ...

The Merensky Reef, Bushveld Complex: Mixing of Minerals Not Mixing of Magmas ... R. Grant Cawthorn School of Geosciences, University of the Witwatersrand, Private Bag 3, Wits 2050, South Africa. Search for other works by this author on: GSW. Google Scholar. F. Johan Kruger. F. Johan Kruger Hugh Allsopp Laboratory, University of the Witwatersrand, Private Bag 3, Wits 2050, South Africa.

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Contrasting sulphide contents of the Bushveld and Sudbury ...

12/04/2005  R. Grant Cawthorn; Article. First Online: 12 April 2005. 219 Downloads; 18 Citations; Abstract . The Sudbury Igneous Complex (SIC) contains abundant sulphides, especially near the base, and hosts one of the world’s largest nickel and copper deposits. The Bushveld Complex (BC) contains relatively little sulphide, but hosts the world’s largest platinum-group element deposits. The most

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Identification of Anorthite-enriched Plagioclase ...

The setting and stratigraphy of the Bushveld Complex has been reviewed many times [most recently by Cawthorn (2015)], and only a brief summary of relevant information is given here. The laterally extremely extensive (and uniform) layering of the Bushveld Complex has been subdivided (into four major layered successions) based on mineral assemblages, ranging from ultrabasic (very magnesian ...

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Parental magma to the Bushveld Complex Nature

The Bushveld Complex of South Africa is a large layered intrusive suite of cumulate rocks for which the parental magma is not directly obtainable. However, we report here indirect evidence from a ...

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Bushveld Igneous Complex - Wikipedia

The Bushveld Igneous Complex (BIC) is the largest layered igneous intrusion within the Earth's crust. It has been tilted and eroded forming the outcrops around what appears to be the edge of a great geological basin: the Transvaal Basin.It is approximately 2 billion years old and is divided into four different limbs: the northern, southern, eastern, and western limbs.

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Oxygen and Hydrogen Isotope Stratigraphy of the Rustenburg ...

the rustenburg layered suite, bushveld complex: constraints on crustal contamination chris harris1,2*, julie j. m. pronost2,3, lewis d. ashwal4 and r. grant cawthorn4 1department of geological sciences, university of cape town, rondebosch 7700, south africa 2departement de geologie, umr 6524, universite jean monnet, 23 rue paul michelon, f-42023 cedex 2, france 3laboratoire magmas et volcans ...

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The role of contamination in the evolution of the Platreef ...

The role of contamination in the evolution of the Platreef of the Bushveld Complex J. M. Barton; J. M. Barton Univ. Witwatersrand, Bernard Price Inst. Geophys. Res., Johannesburg, South Africa . Search for other works by this author on: GSW. Google Scholar. R. Grant Cawthorn; R. Grant Cawthorn Search for other works by this author on: GSW. Google Scholar. J. White. J. White Search for other ...

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Contrasting sulphide contents of the Bushveld and Sudbury ...

12/04/2005  R. Grant Cawthorn; Article. First Online: 12 April 2005. 219 Downloads; 18 Citations; Abstract . The Sudbury Igneous Complex (SIC) contains abundant sulphides, especially near the base, and hosts one of the world’s largest nickel and copper deposits. The Bushveld Complex (BC) contains relatively little sulphide, but hosts the world’s largest platinum-group element deposits. The most

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Contrasting sulphide contents of the Bushveld and Sudbury ...

Cawthorn, R. Grant; Abstract. The Sudbury Igneous Complex (SIC) contains abundant sulphides, especially near the base, and hosts one of the world’s largest nickel and copper deposits. The Bushveld Complex (BC) contains relatively little sulphide, but hosts the world’s largest platinum-group element deposits. The most recent calculations of the sulphur solubility in magmas that produced the ...

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Origin of the Pegmatitic Pyroxenite in the Merensky Unit ...

By R. Grant, Cawthorn and Kevin Boerst. Abstract. The genesis of the pegmatitic pyroxenite that often forms the base of the Merensky Unit in the Bushveld Complex is re-examined. Large (gt;1 cm) orthopyroxene grains contain tricuspidate inclusions of plagioclase, and chains and rings of chromite grains, which are interpreted to have grown by reaction between small, primary orthopyroxene grains ...

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grant cawthorn bushveld complex - hifilm.pl

Grant Cawthorn Bushveld Complex. The bushveld complex of south africa is a large layered intrusive suite of cumulate rocks for which the pare. READ MORE. Grant Cawthorn – The Conversation. Jun 09, 2015 Grant Cawthorn's profile on The Conversation. Main fields of specialization: Origin of mafic igneous intrusive rocks and thei . READ MORE. Gravity modeling of Bushveld Complex connectivity ...

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The Merensky Reef and UG2 layers at De Wildt, western limb ...

This thesis was improved by the careful review of Prof. Grant Cawthorn . 6 LIST OF FIGURES . Figure 1: General geological map of the Bushveld Complex (adapted from Van der Merwe and Cawthorn 2005). The main limbs of the complex are shown; Western Limb, Eastern Limb and Northern Limb. The location of the De Wildt project, east of the Brits Graben is shown. Figure 2: Mineral permits of farm ...

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The extension of the western limb, Bushveld Complex (South ...

Mafic rocks of the Bushveld Complex at the southeastern end of the western limb, intersected in bore core from the Cullinan Diamond Mine, are described. A 260 m thick ultramafic body of orthopyroxene and chromite cumulate rocks, with mg# – 100*Mg/(Mg+Fe) – values from 77 to 84 and 0.25 to 0.5% Cr 2 O 3 in the pyroxene, is considered to have affinity to the Critical Zone. Such an ...

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Oxygen and Hydrogen Isotope Stratigraphy of the Rustenburg ...

the rustenburg layered suite, bushveld complex: constraints on crustal contamination chris harris1,2*, julie j. m. pronost2,3, lewis d. ashwal4 and r. grant cawthorn4 1department of geological sciences, university of cape town, rondebosch 7700, south africa 2departement de geologie, umr 6524, universite jean monnet, 23 rue paul michelon, f-42023 cedex 2, france 3laboratoire magmas et volcans ...

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Reference Rustenberg Layered Suite of the Bushveld Complex ...

Data sources: Reczko et al. (1995) and Cawthorn and Lee (1998). Introduction According to recent estimates, Rustenburg Layered Suite (RLS) of the Bushveld Complex of the Republic of South Africa (Fig. 1) contains 75% and 50% of the World’s Pt and Pd resources, respectively (Table 1). In the international literature, the term “Bushveld” is generally used to describe the mafic and ...

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Bushveld 2006 - PorterGeo

The first day of the tour was devoted to a classroom short course on the Formation, Geology Metallogeny of the Bushveld Complex presented by the renowned expert, Prof. Grant Cawthorn, the Platinum Industry's Professor of Igneous Petrology, School of

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The role of contamination in the evolution of the Platreef ...

The role of contamination in the evolution of the Platreef of the Bushveld Complex J. M. Barton; J. M. Barton Univ. Witwatersrand, Bernard Price Inst. Geophys. Res., Johannesburg, South Africa . Search for other works by this author on: GSW. Google Scholar. R. Grant Cawthorn; R. Grant Cawthorn Search for other works by this author on: GSW. Google Scholar. J. White. J. White Search for other ...

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of magnetite from the Bushveld Complex, South Africa - CORE

By R. Grant Cawthorn, T. S. Mccarthy and G. Davies. Abstract. are found in pure magnetitite layers in the upper zone of the Bushveld Complex. Detailed electron microprobe analysis of one of these indicates avertical compositional zoning of Cr (a highly compatible lement in magnetite) quite different from the concentric zonation often found, for example, in feldspars in intrusive

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grant cawthorn bushveld complex - hifilm.pl

Grant Cawthorn Bushveld Complex. The bushveld complex of south africa is a large layered intrusive suite of cumulate rocks for which the pare. READ MORE. Grant Cawthorn – The Conversation. Jun 09, 2015 Grant Cawthorn's profile on The Conversation. Main fields of specialization: Origin of mafic igneous intrusive rocks and thei . READ MORE. Gravity modeling of Bushveld Complex

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An intrusive origin of some UG-1 chromitite layers in the ...

The UG-1 chromitite in the Bushveld Complex is a 1 ... The authors are thankful to Lewis Ashwal and Grant Cawthorn for informally reviewing . References (61) A. Zeh et al. The Bushveld Complex was emplaced and cooled in less than one million years results of zirconology, and geotectonic implications . Earth Planet. Sci. Lett. (2015) B. O’Driscoll et al. The roles of melt

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The Merensky Reef and UG2 layers at De Wildt, western limb ...

This thesis was improved by the careful review of Prof. Grant Cawthorn . 6 LIST OF FIGURES . Figure 1: General geological map of the Bushveld Complex (adapted from Van der Merwe and Cawthorn 2005). The main limbs of the complex are shown; Western Limb, Eastern Limb and Northern Limb. The location of the De Wildt project, east of the Brits Graben is shown. Figure

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ICDP Workshop Agenda

9:30 - 10:00 Grant Cawthorn (Wits): Bushveld Overview: (a) Structure emplacement, (b) Petrology and metallogenesis ... Is there a particular geographic region of the Bushveld complex that is essential for your study? If so, explain why and be specific about the location. No. What comparable information or research exists already on other sections of the complex?

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Bushveld 2006 - PorterGeo

The first day of the tour was devoted to a classroom short course on the Formation, Geology Metallogeny of the Bushveld Complex presented by the renowned expert, Prof. Grant Cawthorn, the Platinum Industry's Professor of Igneous Petrology, School of Geosciences, University of the Witwatersrand.

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Bushveld Complex geological formation, South Africa ...

Other articles where Bushveld Complex is discussed: Africa: The Precambrian: 2 billion years ago the Bushveld Complex—which is one of the largest differentiated igneous bodies on Earth, containing major deposits of platinum, chromium, and vanadium—was emplaced in the northern Kaapvaal craton. The middle part of the early Proterozoic was dominated by powerful orogenic

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Two expressions of the transition from mafic cumulates to ...

to granitoids in the Bushveld Complex, South Africa: Examples from the western and eastern limbs Ole Skurscha,⁎, Christian Tegnera, Charles E. Leshera,b, R. Grant Cawthornc a Department of Geoscience, Aarhus University, Høegh-Guldbergs Gade 2, 8000 Aarhus C, Denmark b Earth and Planetary Science Department, University of California, Davis, One

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About Us – Welcome to Shango Solutions

Prof Grant Cawthorne (Bushveld Complex) Dr Clive Feather (Laboratory Audits) Mr Bernie Green (Geophysicist) Ophir Drilling and Exploration) Mr Tammo Vink (Legal) Powered by WordPress and Dynamic News. ...

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Dr Grant Bybee – CIMERA

Dr Grant Bybee. Grant Bybee is lecturer in geochemistry and petrology in the School of Geosciences at the University of the Witwatersrand. Prior to this appointment, Grant was a Predoctoral Fellow at the Department of Terrestrial Magnetism at the Carnegie Institution of Washington (2011-2012) and an Associate Lecturer at Wits University. Grant

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