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James Roberts
James Roberts
Senior Lecturer, University of Pretoria
Verified email at up.ac.za
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Cited by
Year
Short-lived mafic magmatism at 560–570 Ma in the northern Norwegian Caledonides: U–Pb zircon ages from the Seiland Igneous Province
RJ Roberts, F Corfu, TH Torsvik, LD Ashwal, DM Ramsay
Geological Magazine 143 (6), 887-903, 2006
1222006
Peri-Gondwanan elements in the Caledonian nappes of Finnmark, northern Norway: implications for the paleogeographic framework of the Scandinavian Caledonides
F Corfu, RJ Roberts, TH Torsvik, LD Ashwal, DM Ramsay
American Journal of Science 307 (2), 434-458, 2007
1072007
Early Silurian mafic–ultramafic and granitic plutonism in contemporaneous flysch, Magerøy, northern Norway: U–Pb ages and regional significance
F Corfu, TH Torsvik, TB Andersen, LD Ashwal, DM Ramsay, RJ Roberts
Journal of the Geological Society 163 (2), 291-301, 2006
932006
Age of alkaline rocks in the Seiland Igneous Province, northern Norway
RJ Roberts, F Corfu, TH Torsvik, CJ Hetherington, LD Ashwal
Journal of the Geological Society 167 (1), 71-81, 2010
722010
A Kaapvaal craton debate: Nucleus of an early small supercontinent or affected by an enhanced accretion event?
PG Eriksson, S Banerjee, DR Nelson, MJ Rigby, O Catuneanu, S Sarkar, ...
Gondwana Research 15 (3-4), 354-372, 2009
722009
Immiscible iron-and silica-rich liquids in the Upper Zone of the Bushveld Complex
LA Fischer, M Wang, B Charlier, O Namur, RJ Roberts, IV Veksler, ...
Earth and Planetary Science Letters 443, 108-117, 2016
642016
Pulses of plagioclase-laden magmas and stratigraphic evolution in the Upper Zone of the Bushveld Complex, South Africa
Q Yuan, O Namur, LA Fischer, RJ Roberts, X Lü, B Charlier
Journal of Petrology 58 (8), 1619-1643, 2017
442017
A vertic paleosol at the Archean-Proterozoic contact from the Singhbhum-Orissa craton, eastern India
PC Bandopadhyay, PG Eriksson, RJ Roberts
Precambrian Research 177 (3-4), 277-290, 2010
432010
The thickness of the crystal mush on the floor of the Bushveld magma chamber
MB Holness, RG Cawthorn, J Roberts
Contributions to Mineralogy and Petrology 172, 1-20, 2017
352017
Baddeleyite U–Pb ages and gechemistry of the 1875–1835 Ma Black Hills Dyke Swarm across north-eastern South Africa: part of a trans-Kalahari Craton back-arc setting?
JR Olsson, MB Klausen, MA Hamilton, N März, U Söderlund, RJ Roberts
GFF 138 (1), 183-202, 2016
352016
Geochronology of zircon megacrysts from nepheline-bearing gneisses as constraints on tectonic setting: implications for resetting of the U-Pb and Lu-Hf isotopic systems
LD Ashwal, RA Armstrong, RJ Roberts, MD Schmitz, F Corfu, ...
Contributions to Mineralogy and Petrology 153, 389-403, 2007
342007
A nuclear magnetic resonance study: implications for coal formation in the Witbank Coalfield, South Africa
OM Moroeng, NJ Wagner, DJ Brand, RJ Roberts
International Journal of Coal Geology 188, 145-155, 2018
252018
Using δ15N and δ13C and nitrogen functionalities to support a fire origin for certain inertinite macerals in a No. 4 Seam Upper Witbank coal, South Africa
OM Moroeng, NJ Wagner, G Hall, RJ Roberts
Organic geochemistry 126, 23-32, 2018
232018
The creation and evolution of crystal mush in the Upper Zone of the Rustenburg Layered Suite, Bushveld Complex, South Africa
Z Vukmanovic, MB Holness, MJ Stock, RJ Roberts
Journal of Petrology 60 (8), 1523-1542, 2019
212019
The Early Carboniferous Magerøy dykes, northern Norway: palaeomagnetism and palaeogeography
RJ Roberts, TH Torsvik, TB Andersen, EF Rehnstrom
Geological Magazine 140 (4), 443-451, 2003
202003
The Seiland Igneous Province, northern Norway: age, provenance, and tectonic significance
RJ Roberts
182007
Distinguishing between legally and illegally produced gold in South Africa
RJ Roberts, RD Dixon, RKW Merkle
Journal of forensic sciences 61, S230-S236, 2016
172016
Exotic terranes in the Finnmarkian Caledonides: U–Pb evidence for Peri-gondwanan and Laurentian elements
F Corfu, RJ Roberts, M Gerber, TH Torsvik, TB Andersen, DM Ramsay, ...
Abstracts and Proceedings of the Geological Society of Norway. Norwegian …, 2005
142005
Redefining the magmatic evolution of the Kalak Nappe Complex
RJ Roberts, F Corfu, TH Torsvik, DM Ramsay, LD Ashwal
Geologiska Föreningen i Stockholm, Abstract volume, The 26th Nordic …, 2004
122004
Characterization of coal using electron spin resonance: implications for the formation of inertinite macerals in the Witbank Coalfield, South Africa
OM Moroeng, JM Keartland, RJ Roberts, NJ Wagner
International Journal of Coal Science & Technology 5, 385-398, 2018
112018
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