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Bushmanland Group

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Journal Article

The Bushmanland Group supracrustal succession, Aggeneys, Bushmanland, South Africa: Provenance, age of deposition and metamorphism Available to Purchase

Russell Bailie, Richard Armstrong, David Reid
Published: 01 March 2007
South African Journal of Geology (2007) 110 (1): 59–86.
DOI: https://doi.org/10.2113/gssajg.110.1.59
...Russell Bailie; Richard Armstrong; David Reid Abstract The central portion of the structurally complex and poly-metamorphosed Namaqua Province of western South Africa is underlain by a series of pelitic and psammitic metasediments, termed the Bushmanland Group, which is host to world class Broken...
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View PDF for article title, The <span class="search-highlight">Bushmanland</span> <span class="search-highlight">Group</span> supracrustal succession, Aggeneys, <span class="search-highlight">Bushmanland</span>, South Africa: Provenance, age of deposition and metamorphism
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Journal Article

Response to the papers by Bailie et al . concerning the age and deposition of the Bushmanland Group (South African Journal of Geology, 110 , 59–86) and single zircon ages of the Aggeneys Granite Suite (South African Journal of Geology, 110 , 87–110) Available to Purchase

Russell Bailie, Richard Armstrong, David Reid
Published: 01 March 2008
South African Journal of Geology (2008) 111 (1): 112–113.
DOI: https://doi.org/10.2113/gssajg.111.1.112
... to follow the exceedingly complex proposed stratigraphic framework of Colliston et al . (2008) and previous publications of theses authors. The samples used in our geochemical and geochronological study of the Bushmanland Group ( Bailie et al ., 2007a ) are limited in extent, being mostly confined...
View PDF for article title, Response to the papers by Bailie et al . concerning the age and deposition of the <span class="search-highlight">Bushmanland</span> <span class="search-highlight">Group</span> (South African Journal of Geology, 110 , 59–86) and single zircon ages of the Aggeneys Granite Suite (South African Journal of Geology, 110 , 87–110)
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Add to Citation Manager for Response to the papers by Bailie et al . concerning the age and deposition of the <span class="search-highlight">Bushmanland</span> <span class="search-highlight">Group</span> (South African Journal of Geology, 110 , 59–86) and single zircon ages of the Aggeneys Granite Suite (South African Journal of Geology, 110 , 87–110)
Journal Article

Comments on the papers by Bailie et al . concerning the age and deposition of the Bushmanland Group (South African Journal of Geology, 110 , 59–86) and single zircon ages of the Aggeneys Granite Suite (South African Journal of Geology, 110 , 87–110) Available to Purchase

W.P. Colliston, A.E. Schoch, H.E. Praekelt
Published: 01 March 2008
South African Journal of Geology (2008) 111 (1): 109–111.
DOI: https://doi.org/10.2113/gssajg.111.1.109
...W.P. Colliston; A.E. Schoch; H.E. Praekelt © 2008, The Clay Minerals Society 2008 The authors of the two papers fulfill a long-felt need for accurate isotopic data on the Bushmanland Group and the contiguous granitic gneisses, not to mention a wealth of new geochemical analyses. The samples...
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View PDF for article title, Comments on the papers by Bailie et al . concerning the age and deposition of the <span class="search-highlight">Bushmanland</span> <span class="search-highlight">Group</span> (South African Journal of Geology, 110 , 59–86) and single zircon ages of the Aggeneys Granite Suite (South African Journal of Geology, 110 , 87–110)
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Add to Citation Manager for Comments on the papers by Bailie et al . concerning the age and deposition of the <span class="search-highlight">Bushmanland</span> <span class="search-highlight">Group</span> (South African Journal of Geology, 110 , 59–86) and single zircon ages of the Aggeneys Granite Suite (South African Journal of Geology, 110 , 87–110)
Journal Article

Lead isotope patterns in Proterozoic stratiform mineralization in the Bushmanland Group, Namaqua Province, South Africa Available to Purchase

D. L. Reid, H. J. Welke, C. B. Smith, J. M. Moore
Journal: Economic Geology
Published: 01 April 1997
Economic Geology (1997) 92 (2): 248–258.
DOI: https://doi.org/10.2113/gsecongeo.92.2.248
...D. L. Reid; H. J. Welke; C. B. Smith; J. M. Moore Abstract Galena in giant Proterozoic sediment-hosted Pb-Zn sulfide deposits in the Bushmanland Group of South Africa has a very uniform Pb isotope composition, with 206 Pb/ 204 Pb = 16.74-16.82, 207 Pb/ 204 Pb = 15.54-15.62, and 208 Pb/ 204 Pb...
View PDF for article title, Lead isotope patterns in Proterozoic stratiform mineralization in the <span class="search-highlight">Bushmanland</span> <span class="search-highlight">Group</span>, Namaqua Province, South Africa
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Selected stratigraphic columns for the Bushmanland Group on a regional scal... Available to Purchase

Published: 01 March 2007
Table 1. Selected stratigraphic columns for the Bushmanland Group on a regional scale ( SACS, 1980 ; McClung et. al. , 2002 ), and in the Aggeneys-Gamberg District ( Rozendaal, 1975 , Lipson, 1978 , 1990 ; Ryan et.al., 1986 ).
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Major element plots for the Bushmanland Group metasediments at the Broken Hill Mine, Aggeneys. (a) TiO2 vs. SiO2. (b) Al2O3 vs. SiO2. (c) Al2O3 vs. SiO2 for the Shaft Schist from various boreholes at the Broken Hill Mine. (d) TiO2 vs. Al2O3. (e) A-CN-K ternary plot (after Nesbitt and Young, 1984; 1989). (f) K2O-MgO-Na2O ternary plot illustrating the K-enrichment and Na-depletion of the metasediments.

Major element plots for the Bushmanland Group metasediments at the Broken H... Available to Purchase

Published: 01 March 2007
Figure 4. Major element plots for the Bushmanland Group metasediments at the Broken Hill Mine, Aggeneys. ( a ) TiO 2 vs. SiO 2 . ( b ) Al 2 O 3 vs. SiO 2 . ( c ) Al 2 O 3 vs. SiO 2 for the Shaft Schist from various boreholes at the Broken Hill Mine. ( d ) TiO 2 vs. Al 2 O 3 . ( e ) A-CN-K
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Trace element plots for the Bushmanland Group metasediments. (a) Th/Sc vs. Zr/Sc indicating a large degree of sediment recycling (after McLennan et al., 1990; 1993). (b) Th/Sc vs. Sc illustrating the contributions from a mafic provenance (represented by high Sc contents and low Th/Sc ratios) as opposed to a more felsic provenance (low Sc contents and high Th/Sc ratios) for the metasediments. (c) The Th-Sc-Zr/10 tectonic discrimination diagram of Bhatia and Crook (1986) for the Bushmanland Group metaquartzites.

Trace element plots for the Bushmanland Group metasediments. ( a ) Th/Sc vs... Available to Purchase

Published: 01 March 2007
Figure 5. Trace element plots for the Bushmanland Group metasediments. ( a ) Th/Sc vs. Zr/Sc indicating a large degree of sediment recycling (after McLennan et al. , 1990 ; 1993 ). ( b ) Th/Sc vs. Sc illustrating the contributions from a mafic provenance (represented by high Sc contents
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Sm-Nd isotope systematics of the Bushmanland Group metasediments. (a) εNd(t) vs. TDM (after De Paolo et al., 1991). (b) fSm/Nd vs. εNd(t). (c) TCHUR histogram for the metasediments. (d) TDM histogram.

Sm-Nd isotope systematics of the Bushmanland Group metasediments. ( a ) ε N... Available to Purchase

Published: 01 March 2007
Figure 7. Sm-Nd isotope systematics of the Bushmanland Group metasediments. ( a ) ε Nd(t) vs. T DM (after De Paolo et al. , 1991 ). ( b ) f Sm/Nd vs. ε Nd(t) . ( c ) T CHUR histogram for the metasediments. ( d ) T DM histogram.
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Comparison of geochronology for Bushmanland Group metasediments of the Aggeneys District and the metasediments of the Khurisberg Subgroup, Okiep District, Namaqualand to the west (from data in Clifford et al., 2004).

Comparison of geochronology for Bushmanland Group metasediments of the Agge... Available to Purchase

Published: 01 March 2007
Figure 15. Comparison of geochronology for Bushmanland Group metasediments of the Aggeneys District and the metasediments of the Khurisberg Subgroup, Okiep District, Namaqualand to the west (from data in Clifford et al. , 2004 ).
Journal Article

A New Chronostratigraphic Paradigm for the Age and Tectonic History of the Mesoproterozoic Bushmanland Ore District, South Africa Available to Purchase

D. H. Cornell, Å. Pettersson, Martin J. Whitehouse, A. Scherstén
Journal: Economic Geology
Published: 01 May 2009
Economic Geology (2009) 104 (3): 385–404.
DOI: https://doi.org/10.2113/gsecongeo.104.3.385
..., no outcrops of Archean rocks have yet been found. The Bushmanland Group metasediments were derived largely from 1850 to 2100 Ma Paleoproterozoic rocks, which probably reflects their provenance in the Richtersveld subprovince to the north. However, they also contain Mesoproterozoic detrital zircon which...
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View PDF for article title, A New Chronostratigraphic Paradigm for the Age and Tectonic History of the Mesoproterozoic <span class="search-highlight">Bushmanland</span> Ore District, South Africa
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Journal Article

The stratigraphy of the T’Goob Sequence (Aggeneys Subgroup) in the eastern Aggeneys Terrane, Namaqua Mobile Belt Available to Purchase

W.J. Nel, W.P. Colliston
Published: 01 March 2025
South African Journal of Geology (2025) 128 (1): 91–114.
DOI: https://doi.org/10.25131/sajg.128.0004
...W.J. Nel; W.P. Colliston Abstract Most of the deformed amphibolite-grade lithological units of the eastern Aggeneys Terrane are traditionally regarded as correlatives of the Wortel Formation of the Aggeneys Subgroup in the Bushmanland Group. Recent structural-stratigraphic mapping in the eastern...
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View PDF for article title, The stratigraphy of the T’Goob Sequence (Aggeneys Subgroup) in the eastern Aggeneys Terrane, Namaqua Mobile Belt
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Journal Article

PROVENANCE OF THE NEOPROTEROZOIC ROCKS OF THE GIFBERG GROUP (WESTERN SOUTH AFRICA) Available to Purchase

A. VAN STADEN, U. ZIMMERMANN, J. GUTZMER, G.J.B. GERMS
Published: 01 June 2014
South African Journal of Geology (2014) 117 (1): 45–66.
DOI: https://doi.org/10.2113/gssajg.117.1.45
... infill, deposited only a short distance from its sources. The provenance signature of the overlying Aties Formation indicates significant mafic and/or intermediate sources. Possible sources are rocks of the Bushmanland Group and an unknown unmetamorphosed mafic to intermediate rock succession, which...
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View PDF for article title, PROVENANCE OF THE NEOPROTEROZOIC ROCKS OF THE GIFBERG <span class="search-highlight">GROUP</span> (WESTERN SOUTH AFRICA)
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Simplified geological map of the Bushmanland area around Aggeneys and Gamsberg showing the various inselbergs and the distribution of the various granitic gneisses and the Bushmanland Group supracrustal succession (after Reid et al., 1997). The localities of the samples for the geochronological study are shown.

Simplified geological map of the Bushmanland area around Aggeneys and Gamsb... Available to Purchase

Published: 01 March 2007
Figure 2. Simplified geological map of the Bushmanland area around Aggeneys and Gamsberg showing the various inselbergs and the distribution of the various granitic gneisses and the Bushmanland Group supracrustal succession (after Reid et al. , 1997 ). The localities of the samples
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Geologic maps. A. Location and tectonic subdivision of the Bushmanland ore district in southwestern Africa. B. Geology of the Bushmanland ore district, showing the four giant ore deposits (Black Mountain Deeps is an extension of Black Mountain). Supracrustal rocks belong to the Bushmanland Group and the Koeris Formation (specified in Fig. 2) but are not differentiated at this scale, although they have different ages. The section A–B and changes in stratigraphic column are shown in Figure 2.

Geologic maps. A. Location and tectonic subdivision of the Bushmanland ore ... Available to Purchase

Published: 01 May 2009
to the Bushmanland Group and the Koeris Formation (specified in Fig. 2 ) but are not differentiated at this scale, although they have different ages. The section A–B and changes in stratigraphic column are shown in Figure 2 .
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Evolution of the Namaqua terranes along section line EFGD (Figure 1) based on references given in Table 2 and the text;

Evolution of the Namaqua terranes along section line EFGD ( Figure 1 ) base... Available to Purchase

Published: 01 December 2012
in the Areachap Terrane; ~1.48 igneous activity in the Bushmanland Terrane; ~1.37 and ~1.36 intrusions in Kaaien Terrane; 1.30-1.24 Ga: Early stages of Namaquan northeasterly and southwesterly subduction; eruption of Areachap Group and formation of Areachap arc and Terrane; later amalgamation of Kaaien
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Evolution of the Sinclair-Namaqua Provinces along section line ABCD (Figure 1) based on references given in Table 2 and the text;

Evolution of the Sinclair-Namaqua Provinces along section line ABCD ( Figur... Available to Purchase

Published: 01 December 2012
, associated dyke swarms; deposition of Grünau and lower Bushmanland groups which contain detrital zircons derived from Mesoproterozoic igneous sources as young as ~1.23 Ga; 1.22-1.18 Ga: Terrane amalgamation and collision; subduction and deep burial of lower Gordonia beneath the overthrust upper Gordonia, D
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Trace element concentration (spider) diagrams and rare earth element (REE) plots for the Bushmanland Group metasediments. (a) NASC-normalised spider diagram. (b) Chondrite-normalised REE plot using the chondrite values of Nakamura (1974) with additional values from Boynton (1984). (c) NASC-normalised REE plot.

Trace element concentration (spider) diagrams and rare earth element (REE) ... Available to Purchase

Published: 01 March 2007
Figure 6. Trace element concentration (spider) diagrams and rare earth element (REE) plots for the Bushmanland Group metasediments. ( a ) NASC-normalised spider diagram. ( b ) Chondrite-normalised REE plot using the chondrite values of Nakamura (1974) with additional values from Boynton (1984
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Geologic section A–B through Gamsberg, after Rozendaal (1986) and Stalder and Rozendaal (2004), showing the isoclinal folding of both Bushmanland Group metasediments and the younger Koeris Formation. A chronostratigraphic table and legend are also shown according to this work (left) and according to the previous paradigm (right, e.g., Stalder and Rozendaal, 2004).

Geologic section A–B through Gamsberg, after Rozendaal (1986) and Stalde... Available to Purchase

Published: 01 May 2009
F ig . 2. Geologic section A–B through Gamsberg, after Rozendaal (1986) and Stalder and Rozendaal (2004) , showing the isoclinal folding of both Bushmanland Group metasediments and the younger Koeris Formation. A chronostratigraphic table and legend are also shown according to this work (left
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Comparison of previous and proposed lithostratigraphic nomenclature and subdivision of the Bushmanland Group for the Aggeneys terrain. Note that the stratigraphic columns of Paizes (1975), SACS (1980), Colliston (1983), Praekelt (1984; 1994), Strydom (1985), Colliston et al. (1989), and Praekelt et al. (1993; 1997) have been omitted from this compilation as they are thought to be too complex.

Comparison of previous and proposed lithostratigraphic nomenclature and sub... Available to Purchase

Published: 01 December 2009
F ig . 2. Comparison of previous and proposed lithostratigraphic nomenclature and subdivision of the Bushmanland Group for the Aggeneys terrain. Note that the stratigraphic columns of Paizes (1975) , SACS (1980) , Colliston (1983) , Praekelt (1984 ; 1994) , Strydom (1985) , Colliston et
Journal Article

A NEW CHRONOSTRATIGRAPHIC PARADIGM FOR THE AGE AND TECTONIC HISTORY OF THE MESOPROTEROZOIC BUSHMANLAND ORE DISTRICT, SOUTH AFRICA—A DISCUSSION Available to Purchase

C. R. McClung, J. Gutzmer, N. J. Beukes
Journal: Economic Geology
Published: 01 December 2009
Economic Geology (2009) 104 (8): 1277–1281.
DOI: https://doi.org/10.2113/gsecongeo.104.8.1277
...F ig . 2. Comparison of previous and proposed lithostratigraphic nomenclature and subdivision of the Bushmanland Group for the Aggeneys terrain. Note that the stratigraphic columns of Paizes (1975) , SACS (1980) , Colliston (1983) , Praekelt (1984 ; 1994) , Strydom (1985) , Colliston et...
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View PDF for article title, A NEW CHRONOSTRATIGRAPHIC PARADIGM FOR THE AGE AND TECTONIC HISTORY OF THE MESOPROTEROZOIC <span class="search-highlight">BUSHMANLAND</span> ORE DISTRICT, SOUTH AFRICA—A DISCUSSION
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