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R.A. Armstrong
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Journal Article
Provenance of metasedimentary rocks of the Kheis Terrane and Kakamas Domain: support for accretionary tectonics during the development of the western Namaqua-Natal metamorphic province
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 March 2022
South African Journal of Geology (2022) 125 (1): 61–78.
Journal Article
The age of the Koegel Fontein anorogenic complex, South Africa, and its relationship to the regional timing of magmatism and breakup along the South Atlantic rifted margin
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 March 2019
South African Journal of Geology (2019) 122 (1): 69–78.
Journal Article
The pre-Karoo geology of the southern portion of the Kaapvaal Craton, South Africa
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 March 2018
South African Journal of Geology (2018) 121 (1): 1–22.
Journal Article
Erratum to “Age of Metavolcanic rocks at the northern margin of the Namaqua-Natal Metamorphic Province in the Karas Mountains, Namibia, defined by SHRIMP U-Pb dating of zircons”
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 September 2016
South African Journal of Geology (2016) 119 (3): 583–584.
Journal Article
AMPHIBOLITES OF THE CENTRAL ZONE: NEW SHRIMP U-PB AGES AND IMPLICATIONS FOR THE EVOLUTION OF THE DAMARA OROGEN, NAMIBIA
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 June 2014
South African Journal of Geology (2014) 117 (1): 67–86.
Journal Article
Low δ 18 O zircon grains in the Neoarchean Rum Jungle Complex, northern Australia: An indicator of emergent continental crust
Journal: Lithosphere
Publisher: GSW
Published: 01 February 2014
Lithosphere (2014) 6 (1): 17–25.
Journal Article
U-PB SHRIMP ZIRCON DATING OF MESOPROTEROZOIC MAGMATIC ROCKS FROM THE SCOTTBURGH AREA, CENTRAL MZUMBE TERRANE, KWAZULU-NATAL, SOUTH AFRICA
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 September 2010
South African Journal of Geology (2010) 113 (2): 229–235.
Journal Article
A NEW U-PB ZIRCON AGE FOR THE PORTOBELLO GRANITE FROM THE SOUTHERN PART OF THE NATAL METAMORPHIC BELT
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 September 2009
South African Journal of Geology (2009) 112 (2): 197–208.
Journal Article
Evidence for an early Archaean granite from Bastar craton, India
Journal: Journal of the Geological Society
Publisher: Geological Society of London
Published: 01 March 2009
Journal of the Geological Society (2009) 166 (2): 193–196.
Journal Article
U-Pb SHRIMP data for the Madibe greenstone belt: implications for crustal growth on the western margin of the Kaapvaal Craton, South Africa
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 March 2008
South African Journal of Geology (2008) 111 (1): 67–78.
Journal Article
New age constraints on the tectogenesis of the Kheis Subprovince and the evolution of the eastern Namaqua Province
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 March 2008
South African Journal of Geology (2008) 111 (1): 79–88.
Journal Article
The Lindeques Drift and Heidelberg Intrusions and the Roodekraal Complex,Vredefort, South Africa: comagmatic plutonic and volcanic products of a 2055 Ma ferrobasaltic magma
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 September 2006
South African Journal of Geology (2006) 109 (3): 279–300.
Journal Article
Precise SHRIMP U-Pb zircon age constraints on the lower Waterberg and Soutpansberg Groups, South Africa
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 June 2006
South African Journal of Geology (2006) 109 (1-2): 139–156.
Journal Article
New U-Pb data on zircons from the Amalia greenstone belt Southern Africa: insights into the Neoarchaean evolution of the Kaapvaal Craton
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 September 2005
South African Journal of Geology (2005) 108 (3): 317–332.
Journal Article
The crustal architecture of Archaean terranes in Northeastern Botswana
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 June 2004
South African Journal of Geology (2004) 107 (1-2): 147–158.
Journal Article
SHRIMP U-Pb zircon ages of granitoids from the Western Domain of the Kaapvaal Craton, Southeastern Botswana: implications for crustal evolution
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 June 2004
South African Journal of Geology (2004) 107 (1-2): 159–172.
Journal Article
A cryptic Mesoarchaean terrane in the basement to the Central African Copperbelt
Journal: Journal of the Geological Society
Publisher: Geological Society of London
Published: 01 January 2003
Journal of the Geological Society (2003) 160 (1): 11–14.
Journal Article
Metamorphic history and U-Pb Zircon (SHRIMP) geochronology of the Glenmore Granite: Implications for the tectonic evolution of the Natal Metamorphic Province
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 December 2002
South African Journal of Geology (2002) 105 (4): 325–336.
Journal Article
Amphibolite facies metamorphism in the Schapenburg schist belt: A record of the mid-crustal response to ~3.23 Ga terrane accretion in the Barberton greenstone belt
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 September 2002
South African Journal of Geology (2002) 105 (3): 271–284.
Journal Article
SHRIMP U-Pb zircon geochronology of the Hurungwe granite northwest Zimbabwe:Age constraints on the timing of the Magondi orogeny and implications for the correlation between the Kheis and Magondi Belts.
Journal: South African Journal of Geology
Publisher: Geological Society of South Africa
Published: 01 March 2001
South African Journal of Geology (2001) 104 (1): 39–46.
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