 | COBBING, J. E., EALES, K., GIBSON, J., LENKOE, K., COBBING, B. L. (2015) OPERATION AND MAINTENANCE (O&M) AND THE PERCEIVED UNRELIABILITY OF DOMESTIC GROUNDWATER SUPPLIES IN SOUTH AFRICA. South African Journal of Geology, 118 (1) 17-32 doi:10.2113/gssajg.118.1.17 | Journal (article/letter/editorial) | | UNRELIABILITY OF DOMESTIC GROUNDWATER SUPPLIES IN SOUTH AFRICA J.E. COBBING Corresponding author: Nelson Mandela...student) PO Box 7700, Port Elizabeth, 6031, South Africa e-mail: jcobbing@gmail.com K. EALES Counterpoint...280 Rotsvygie St, La Montagne, Pretoria, 0184, South Africa e-mail: kea@iafrica.com J. GIBSON Maluti GSM...Ltd, PO Box 8125, Nahoon, East London, 5210, South Africa e-mail: jim@malutiwater.co.za K. LENKOE ERM...Woodlands Drive, Woodmead, Johannesburg, 2148, South Africa e-mail: dithapo@gmail.com B.L. COBBING CSS |  | | Journal (article/letter/editorial) | | proximal eskers in the Lichtenburg/Ventersdorp area of the North West Province, South Africa Mike C.J. de Wit...7195, South Africa e-mail: dewit@icon.co.za © 2016 December Geological Society of South Africa Abstract...of the Lichtenburg-Ventersdorp area of the North West Province are associated with north-south orientated...(Transvaal Supergroup) at some 1,500 m elevation. East to west, this dolomite plain measures 150 km, and northsouth...the gravels are 1 Ba, but mantle zircons from Lichtenburg suggest that these have been derived from Cambrian |  | | Journal (article/letter/editorial) | | diamond industry and the gravels of the North West Province, South Africa M.G.C. Wilson and G. Henry Council...tania@gmail.com © 2006 September Geological Society of South Africa ABSTRACT The liberalization of the diamond...increase in onshore alluvial diamond production in South Africa. Inland, alluvial diamond production reached...discovery of the Lichtenburg diamond field in 1926 made a huge, short term impact on South Africa’s diamond...diggers of the previous century. The northern Lichtenburg, and eastern Ventersdorp diamond fields are largely |  | | Journal (article/letter/editorial) | | DIAMOND DEPOSITS OF THE VENTERSDORP DISTRICT, NORTHWEST PROVINCE, SOUTH AFRICA T.R. MARSHALL Explorations Unlimited...1412, South Africa e-mail: rnarshall.tania@gmail.com G.A. NORTON Rockwell Diamonds Inc. South Africa...glenn@rockwelldiamonds.coin @ 2009 June Geological Society of South Africa ABSTRACT NiiniLTous models have been presented...deposits on the dolomite plain in the Ventersdorp district. These have, typically, highliglitet] the imponance...Introduction The alluvial diamond fields of the North West Province extend over an area of some 25.000 km^ |  | | Book (volume) | | DIAMOND-BEARING ALLUVIAL GRAVELS OF THE UNION OF SOUTH AFRICA DIAMOND-BEARING GRAVELS DRAINAGE WEATHERING...SYSTEMS THE ORIGIN OF THE ALLUVIAL DIAMONDS THE SOUTH-WEST AFRICA DIAMOND DEPOSITS THE VAAL RIVER ALLUVIAL GRAVELS...GRAVELS OF LICHTENBURG T HE BOULDERS AND PEBBLES OF UCHTENBURG THE DIAMONDS FROM THE LICHTENBURG AREA THE... 202. 202. 203. 203. 20!. 205. SL'LICHTENBURG 205. 206. 206. 207. 207. 208. MABUKI MINE,...TANGANYIKA TERRITORY SINK-HOLE, BOTTOM OP SINK-HOLE, LICHTENBURG SINK-HOLE, RUIGTELAAGTE PoT-HoLE SINK-HoLE, WELVERDmND |  | | Journal (article/letter/editorial) | | 561 36. The OCCVRRE~rC~of Dor.oma~ in Sovx~t AFRICa. By DArn) DRxeER, Esq., F.G.S. (Read May 23rd,...becomes, on the surface, altered into a species of chert. This calcareous quartzite is locally known as elephant-rock... and superficially ' altered into a species of chert.' Having had especial opportunities of examining...especially several deep workings in it in the Malmani district, I have come to She conclusion :-lstly. That the...Transvaal, but principally in the Potchefstroom, Lichtenburg, MaN mani, and Lydenburg districts, is really |  | | Journal (article/letter/editorial) | | South African Geographical Journal ISSN: 0373-6245 (Print) 2151-2418 (Online) Journal homepage: https://www...Underground Erosion of the S.W. Transvaal Dolomite, South African Geographical Journal, 5:1, 55-65, DOI: 10...watt>r-bearing for111ation that it stands pre-eminent in South Africa and forms a national ai'Het of great value....metalliferous occurrences have ceased to exist, the South African dolomite waters, through the medium of land...of this lecture. The area of the dolomite in the South-Wt•stern Transvaal is considerable, and eovers approximately |  | | Book | | Mandela Metropolitan University Port Elizabeth South Africa ISSN 2364-6438 Regional Geology Reviews ISBN...Mandela Metropolitan University Port Elizabeth South Africa ISSN 2364-6446 (electronic) ISBN 978-3-319-40859-0...sill at the top of the Great Escarpment looking south, through Desolation Valley, towards the distant...Bowring traversed Cape-Karoo routes with numerous South African geologists. He recognized early on that...the USA. Sam continued to work unselfishly with South African paleontologists, under his motto ‘no dates |  | | Journal (article/letter/editorial) | | O. Box 6308, Baillie Park, 2526 Republic of South Africa E-mail: mcbrink@iafrica.com F.B. Waanders School...University, Potchefstroom, 2520 Republic of South Africa E-mail: CHIFBW@puknet.puk.ac.za A.A. Bisschoff...Sangiro St., Potchefstroom, 2531 Republic of South Africa 1st February 2000 Abstract — A fault, designated...the field continuously from the area north of Klerksdorp to the West Rand. It is shown that the Katdoornbosch...centrifugal vergence, away from the centre. Where chert beds ofthe Malmani Subgroup were intersected, thrust |  | DE WIT, M.C.J., WARD, J.D., BAMFORD, M.K., ROBERTS, M.J. (2009) THE SIGNIFICANCE OF THE CRETACEOUS DIAMONDIFEROUS GRAVEL DEPOSIT AT MAHURA MUTHLA, NORTHERN CAPE PROVINCE, SOUTH AFRICA. South African Journal of Geology, 112 (2) 89-108 doi:10.2113/gssajg.112.2.89 | Journal (article/letter/editorial) | | PROVINCE, SOUTH AFRICA M.C.J. DE WIT Department of Geology, University of Pretoria, Pretoria 0002, South Africa...co.za J.D. WARD 17 Buitekring, Stellenbosch, South Africa e-mail: jdw13@vodamail.co.za M.K. BAMFORD BPI...Witwatersrand, Private Bag 3, Johannesburg, WITS 2050, South Africa e-mail: marion.bamford@wits.ac.za M.J. ROBERTS...Johannesburg, South Africa e-mail: mike.roberts@debeersgroup.com © 2009 June Geological Society of South Africa...age have been preserved on the Ghaap Plateau north-west of Reivilo at 1455 m above sea level. The alluvial |  | Pack, A., Gutzmer, J., Beukes, N. J., van Niekerk, H. S., Hoernes, S. (2000) Supergene Ferromanganese Wad Deposits Derived from Permian Karoo Strata along the Late Cretaceous-Mid-Tertiary African Land Surface, Ryedale, South Africa. Economic Geology, 95 (1) 203-220 doi:10.2113/gsecongeo.95.1.203 | Journal (article/letter/editorial) | | Cretaceous–Mid-Tertiary African Land Surface, Ryedale, South Africa A. PACK,†,* J. GUTZMER, N. J. BEUKES, H. S....University, P.O. Box 524, Auckland Park 2006, South Africa AND S. HOERNES Mineralogisch-Petrologisches...mine situated 110 km west of Johannesburg in the northwestern province of South Africa. The wad was derived...Malmani dolomite of the Transvaal Supergroup to the west of Johannesburg (Fig. 1). The deposits were first... namely the one at Ryedale mine situated 110 km west of Johannesburg (Fig. 1). Similar deposits are also |  | | Journal (article/letter/editorial) | | described, and its occurrence over a wide area of west Cairo is recorded. The author considers its age...Notes on the Geology of South Africa." By D. Draper, Esq., F.G.S. The district here considered includes...plateau (1, c) and Natal, including the terrace (2) north of the Tugela Eiver, and Zululand. The lower 500...paper. 3. " On the Occurrence of Dolomite in South Africa." By D. Draper, Esq., F.G.S. A peculiar calcareo-siliceous..." as passing into dolomite and ultimately into chert, and known as the " Elephant rock" in Transvaal |  | | Thesis/Dissertation | | BETWEEN BARKLY WEST AND THE VAAL-HARTS CONFLUENCE IN THE NORTHERN CAPE PROVINCE, SOUTH AFRICA By FABRICE...deposits along the Vaal River, alluvial Barkly West and the Vaal-Harts confluence, have been worked... system in the area as well as the presence of local of the drainage trap sites in the river profile... Anglo-Aaerican Mines Ltd., Corporation of South Africa and De Beers Consolidated for the provision...indicator minerals. The Minerals Bureau of South Africa in Johannesburg for providing the diamond production |  | | Journal (article/letter/editorial) | | considerable variation in altitude within each district. Such deposits, frequently, lie in many tens or...of ancient man have been found in the placers of Africa. The stream divide placers include siliceous concretions...of the district. It should be stressed that the ancient placers differ radically from the local rock,...transported from beyond the boundaries of the district is as large as 90 percent. This is the basis for...the placer deposits of Borneo, California, and Africa. The primary target of the mining operation, further |  | | Book (edition) | | Southern Africa a Collector’s Guide ■ Rocks, Minerals and Gemstones of Southern Africa & — - ... T ~ '' .rats en&nes L of Southern Africa A Collector’s Guide - Struik Publishers (an operating...suggestions and advice. Author’s Preface Southern Africa has much to offer the amateur geologist, whatever...best plan is to take local advice wherever you are. 9 In small places try the local police station first...usually helpful and will know it there are any local gem clubs and how to get in touch with them. There |  | | Book (edition) | | OF OF SOUTH AFRICA MINES GEOLOGICAL SURVEY MINERAL RESOURCES OF REPUBLIC OF THE SOUTH AFRICA...Second World War, and partly as a result of it, South Africa experienced vast industrial expansion. This...official ‘handbook on the mineral resources of South Africa, it has become necessary to revise, or rather...great diversity and magnitude of South African mineral deposits and local mining operations, the Economic...Chamber of Mines of South Africa with Mr G. H. Grange as co-ordinator, and the South, African mining industry; |  | | Journal (article/letter/editorial) | | tectonics, magmatism, and mineralisation of the South African Precambrian shield is discussed. A geosynclinal...five times as long as the post-Precambrian. The South African shield appears highly suitable for investigations...preserved and well exposed. The Precambrian in southern Africa comprises a more or less continuous suite ofmetasediments...of more than 35,000 m. Furthermore, in southern Africa the earth's history, at least in outline, appears...mineralisation. There is hardly anywhere else in Africa an orogenic zone to which this applies. Recent |  | | Report (issue) | | St. An~w•a Crescent, Cardiff 15, Donegal! Square West, Belfast or through any Bookseller to lse:_ 1933...Kingdom . . . ... . .. (1922) Part II. Britisl1 Africa . .. . ,. . .. (1922) Par~ III. Britisl1 America...and New Zealand .. . (1922J Part VI. Europe and Africa (I!"oreign) ~ .. . (1922) Part VII. Foreign Arueriea.... ' • ' ' ' • I ' IMPERIAL INS'TITUTE SOUTH KENSINGTON, S.W. 7 The Imperial Institute was e...Andre\v 1s Crescent, Ca.rmff J 5, Donegall Square West, Belfast or thr-ough a.n.y Bookseller 1933 Price |  | | Journal (article/letter/editorial) | | Nelson Mandela University, Port Elizabeth, 6031, South Africa e-mail: naledichere1@gmail.com; Bastien.aeon@gmail...December Geological Society of South Africa Abstract The Karoo Basin of South Africa was explored for conventional...across the Karoo region immediately north of the Cape Mountains and south of the main concentration of dolerite...lowering atmospheric temperatures. This feedback can SOUTH AFRICAN JOURNAL OF GEOLOGY 2017 • VOLUME 120.4 PAGE...shales? 2 The Karoo Basin covers 620 000 km of South Africa and contains 1 to 5 km thick sedimentary sequences |  | | Book (edition) | | and Metallurgy Past-President Geol. Soc. of South Africa R. H. RASTALL University Lecturer in Mineralogy... . CONTENTS The Accessory Minerals of Sands . Local Variation Vertical Variations Gold Placers Platinum...(Wytheville, Virginia) 2. Histogram of Beach Gravel (North Devon) 3. Histogram of River Gravel (Glencoe) ...Composition of River Deposits 12. Glacial Sand (West Coast of Greenland) 13. Sands washed from British...Yorkshire) 136 Haematitic Limestone (Rhiwbina, South Wales) re Fireclay with Zoned Spherulites of Siderite |  | | Book (edition) | | and Metallurg y Past-President Geol. Soc. of South Africa Ree ie RA ALE University Lecturer in Mineralogy...DEPOSITS CONTENTS The Accessory Minerals of Sands Local Variation : Vertical Variations Gold Placers Platinum...(Wytheville, Virginia) . Histogram of Beach Gravel (North Devon) . Histogram of River Gravel (Glencoe) . Cumulative...Mechanical Composition of River Deposits . Glacial Sand (West Coast of Greenland) . Sands washed from British...Wyke, Yorkshire) Haematitic Limestone (Rhiwbina, South Wales) Fireclay with Zoned Spherulites of Siderite |  | | Book (edition) | | cutting 6. Diamond in 'blue ground', Kimberley, South Africa 7. Graphite 5. 9 ,. , .t . 9 • 10 11...deposited. In any one area one can recognize a local succession of rock groups. Many of these groups...chromite-rich layers of the Bushveld Complex of South Africa and the magnetite deposits . of Kiruna, Sweden...the Ural Mountains and in the diamond pipes of South Africa, the economically valuable crystals are scattered...diamond-bearing gravels caused a great rush to Lichtenburg in South West Africa. Gemstones (rubies, sapphires, etc |  | | Journal (issue) | | BranchOlftc~: SHEFFIELD, YORKSHIRE also in: U.S.A. • SOUTH AFRICA • AUSTRALIA RHODESIA& SWITZERLAND • OVERSEAS...by recrystallisation from an area of secondary chert within the limestone 3. Corroded fragment of fusulinid...of characteristics off olding in the Bur Region south-east of Baidoa . . . '' Magnetic pattern of country...During this early period the British South Africa Company, the British West Charterland Company, the Balkis...Tribal Territory. Siegfried Passarge worked in the north, mainly in the Batawana Tribal Territory and in |  | | Book | | their ample supply lies, of course, in their great local abundance in certain parts of the earth's crust...Rand gold deposits; Blind River-Algoma uranium district; Tri-State zinc and lead; Kupferschiefer copper...most important of Europe. KIRUNA DISTRICT This famous mining district is located in the northern part...part of Sweden 100 miles north of the Arctic Circle. The main deposit consists of a dikelike mass which is... syenite porphyr y Fig. 1 3. The Kiruna iron district, Sweden. No. 514, Stockholm, 1950.) "Lower Houki" | | | Book (edition) | | 6. Diamond in ‘blue ground’, Kim¬ berley, South Africa 7. Graphite 9 8. Crystal of iron pyrites...deposited. In any one area one can recognize a local succession of rock groups. Many of these groups...chromite-rich layers of the Bushveld Complex of South Africa and the magnetite deposits of Kiruna, Sweden...the Ural Mountains and in the diamond pipes of South Africa, the economically valuable crystals are scattered...diamond-bearing gravels caused a great rush to Lichtenburg in South West Africa. Gemstones (rubies, sap¬ phires, etc |
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