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Barkly West South Africa

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Journal Article
Published: 01 March 2008
South African Journal of Geology (2008) 111 (1): 53–66.
...M.C.J. de Wit Abstract Canteen Koppie, a national monument of historical value, occurs next to Barkly West on the north bank of the Vaal River. Diamonds were discovered there in 1869 and it became the first alluvial diamond diggings in South Africa. The digging continued, albeit on and off...
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Journal Article
Published: 01 September 1988
South African Journal of Geology (1988) 91 (3): 350–357.
Journal Article
Published: 01 September 2018
South African Journal of Geology (2018) 121 (3): 327–335.
... West District, Northern Cape Province ), Republic of South Africa, Rockwell Diamonds Incorporated , Johannesburg , 121 pp. Matheys , F.G. , 1990 . The alluvial diamond deposits of the lower Vaal River between Barkly West and the Vaal-Harts confluence in the Northern Cape Province, South...
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Journal Article
Published: 01 December 1998
South African Journal of Geology (1998) 101 (4): 299–306.
... varieties of hypabyssal facies kimberlite. As the Voorspoed kimberlite is located between the approximately 120 Ma Barkly West and the approximately 145 Ma Swartruggens kimberlites, accurate determination of an intrusion age is crucial to the evaluation of the Group II age progression across southern Africa...
Journal Article
Published: 01 June 2020
South African Journal of Geology (2020) 123 (2): 249–262.
... Spirogyra sp. The thickness of the MAZ changes across the main Karoo Basin from ~320 m near Barkly Pass in the south to ~100 m west of Clarens in the north ( Bordy et al., 2004 ; Bordy and Eriksson, 2015 ; Bordy and Head, 2018 ). These total thickness values include the combined variable...
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Journal Article
Published: 01 June 2004
South African Journal of Geology (2004) 107 (1-2): 301–324.
... to 0.8 Ga) components ( Dirks et al., 2003 ). An east-west belt of ~1.0 Ga eclogites and white schists marks a possible suture between the Congo and Azanian Cratons ( Johnson and Oliver, 2000 ; see John et al. , 2003 for a different interpretation). A combined geological map of South Africa...
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Journal Article
Published: 01 September 2009
South African Journal of Geology (2009) 112 (2): 125–140.
... km. The 26 kimberlites selected for the present study extend across the central portion of the main Karoo Basin from Lesotho to Victoria West in South Africa (Figure 1 ). The complete analytical data-set may be obtained from Hanson (2007) and Howarth (2007) (the former available...
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Journal Article
Published: 01 September 2020
South African Journal of Geology (2020) 123 (3): 297–330.
...M.J. de Wit; B. Linol; H. Furnes; T. Muedi; K. Valashiya Abstract New field mapping has discovered numerous sections of pillow lavas with hyaloclastites at the lowest levels of Jurassic Karoo volcanic sequences across Lesotho and South Africa. Vesicularity (content and size) and geochemistry...
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Journal Article
Published: 01 September 2005
South African Journal of Geology (2005) 108 (3): 351–364.
..., South Africa). Car for scale. Figure 5. Tabular sandstones ( A, B ) and laterally accreted sandstone and mudstone packages (pointbars)( C, D ) in the uppermost Molteno and lowermost Elliot formations, respectively (A, D -Kramberg, west of Aliwal North, hammer in white circle for scale; B...
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Journal Article
Published: 01 June 2004
South African Journal of Geology (2004) 107 (1-2): 285–300.
... 24.34 79.1(.25) 81.0(.45) 88.34 84.76 83.43 71.28 70.82 66.64. © 2003 Geological Society of South Africa 2004 The Gansfontein kimberlite, situated in the Karoo north of Beaufort West, South Africa, is one of the southern most kimberlites in South Africa, ~170km west...
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Journal Article
Published: 01 June 2002
South African Journal of Geology (2002) 105 (2): 107–134.
... Geological Map of South Africa (1984). Interpretation is hampered by minimal outcrop. The extensive Kalahari cover is up to 180m in thickness. The few units that outcrop do so predominantly in the east. From east to west, only Archean granitic basement, the Vryburg Formation (Schmidtsdrif Subgroup...
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Journal Article
Published: 01 September 2005
South African Journal of Geology (2005) 108 (3): 448–453.
...Brian R. Turner; K. Thomson © 2005 Geological Society of South Africa 2005 The paper by Bordy et al. (2004) represents a useful contribution to one of the most neglected parts of the Karoo succession, despite its importance in terms of biological and climate change, and evolving basin...
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Journal Article
Published: 01 September 2005
South African Journal of Geology (2005) 108 (3): 454–461.
...E.M. Bordy; P.J. Hancox; B.S. Rubidge © 2005 Geological Society of South Africa 2005 The discussion by Turner and Thomson raises a number of interesting points which we feel required greater clarity, and presents certain statements which in truth are not hard and fast facts. A number...
Journal Article
Published: 01 December 2004
South African Journal of Geology (2004) 107 (4): 587–602.
..., south of Lady Grey). Hammer for scale (28cm). ( B ) Pedogenic carbonate glaebule conglomerates are unique to Upper Elliot Formation. They are clast supported, moderately sorted and usually massive or planar cross-bedded (Mabula, west of Maseru, in South Africa). Lens cap for scale (5.8cm...
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Journal Article
Published: 01 September 2004
South African Journal of Geology (2004) 107 (3): 397–412.
... Committee for stratigraphy (SACS) ( 1980 ). Stratigraphy of South Africa . Part I (Compiler L.E. Kent), Lithostratigraphy of the Republic of South Africa, South West-Africa/Namibia, and the Republics of Bophuthatswana, Transkei, and Venda, Geological Survey South Africa Handbook 8 , 690 pp...
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Journal Article
Published: 01 December 2007
South African Journal of Geology (2007) 110 (4): 543–560.
...F. Holzförster Abstract The Lower Jurassic Clarens Formation of the main Karoo Basin, South Africa, is regarded a climatically controlled fluvioaeolian to aeolian lithostratigraphic interval. It reveals a tectonically quiet period of orogenic unloading of the Cape Fold Belt and initiation...
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Journal Article
Published: 01 June 2004
South African Journal of Geology (2004) 107 (1-2): 59–80.
... within the continental mantle root or boundary layer. These speculations may be resolved with an increased sampling density and understanding of megacryst petrogenesis. © 2003 Geological Society of South Africa 2004 Figure 2. Cr 2 O 3 versus Mg# plot for 180 megacrysts from the Monastery...
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Journal Article
Published: 01 September 2015
South African Journal of Geology (2015) 118 (3): 311–316.
... of southern Africa, with special emphasis on the footprints and age of the Stormberg . Palaeontologia africana , 25 , 87 – 110 . SACS (South African Committee for Stratigraphy) , 1980 . Stratigraphy of South Africa. Part 1. Lithostratigraphy of the Republic of South Africa, South West Africa/Namibia...
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Journal Article
Published: 01 September 2007
South African Journal of Geology (2007) 110 (2-3): 339–348.
...John S. Compton; Livhuwani Maake Abstract The Orange River is one of the World’s most turbid; delivering 60 million tons of sediment each year to the western margin of South Africa. Much of this sediment is believed to be from soil erosion, an increasing environmental threat to sustainability...
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Journal Article
Published: 01 March 2018
South African Journal of Geology (2018) 121 (1): 119–130.
... ). Palaeocurrent studies of the large to very large-scale cross-bedded sandstones in the main Karoo Basin and the other Karoo-aged basins of South Africa ( Figure 1 ) suggest that the main wind direction was dominantly from west to east, but local variations in the wind regime existed (e.g., Visser, 1984...
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