 | | Journal (article/letter/editorial) | | SOUTH AFRICA L. NGCOFE Council for Geoscience, PO Box 572, Bellville, 7535, Cape Town, South Africa e-mail:...PO Box 775, Upington, 8801, Northern Cape, South Africa e-mail: Hminnaar@geoscience.org.za K. HALENYANE...Geoscience, PO Box 572, Bellville 7535, Cape Town, South Africa e-mail: Khalenyane@geoscience.org.za; Lchevallier@geoscience...za © 2013 December Geological Society of South Africa ABSTRACT This research focuses on the application...mined extensively in South Africa. The copper deposits exploration in South Africa has been studied by several |  | Thomas, Robert J., Macey, Paul H., Spencer, Christopher, Dhansay, Taufeeq, Diener, Johann F.A., Lambert, Christopher W., Frei, Dirk, Nguno, Anna (2016) The Sperrgebiet Domain, Aurus Mountains, SW Namibia: A ∼2020–850Ma window within the Pan-African Gariep Orogen. Precambrian Research, 286. 35-58 doi:10.1016/j.precamres.2016.09.023 | Journal (article/letter/editorial) | | 1 Council for Geoscience, Western Cape, South Africa, bthomas@geoscience.org.za 2 The Institute of...Cape Town, South Africa 4 Department of Geology, University of Stellenbosch, South Africa 5 Geological...considered an early phase of the Palaeoproterozoic Orange River Orogeny. The Wasserkuppe Suite is intruded by...dominated the palaeogeography of this part of southern Africa 100 m.y. later, and which forms the crustal...diamond-rich “Sperrgebiet” (German: “Prohibited area”) of southern Namibia. It extends from some 35 km NW of Rosh |  | Garzanti, Eduardo, Vermeesch, Pieter, Padoan, Marta, Resentini, Alberto, Vezzoli, Giovanni, Andò, Sergio (2014) Provenance of Passive-Margin Sand (Southern Africa) The Journal of Geology, 122 (1) 17-42 doi:10.1086/674803 | Journal (article/letter/editorial) | | Provenance of Passive-Margin Sand (Southern Africa) Author(s): Eduardo Garzanti, Pieter Vermeesch, Marta...Conditions Provenance of Passive-Margin Sand (Southern Africa) Eduardo Garzanti,1,* Pieter Vermeesch,2 Marta...geochronological, and geochemical signatures of river sands across southern Africa. We single out the several factors...sources. Quartz and feldspars with amphibole, epidote, garnet, staurolite, and kyanite are derived from...zircons mirror the orogenic events that affected southern Africa since the Archean. Damara (0.5–0.6 Ga) and |  | | Journal (article/letter/editorial) | | colliswp@sci.uovs.ac.za © 2003 Geological Society of South Africa ABSTRACT The western part of the Mid-Proterozoic...to 700°C at ≥4 kbar. However epidote-rich parageneses (such as epidote-garnet-quartz) that locally transect...bearing tectonic units 2 and 3. In section e-e’ the southern contact is sharp (at locality 1, Figure 2), followed...localities 1, 2, 3 and 4 in Figure 2). On the southern limb of the Quarry fold nappe the quartzite makes...plagioclase, opaque minerals, quartz and zoned epidote. Porphyroblasts of microcline microperthite (up |  | | Journal (article/letter/editorial) | | smoky quartz, black lustrous magnetite and green epidote. "I am mailing you this small vial of sand which...stream of water which empties into the Housatonic River at Cornwall Bridge. From the north edge of Guna...brown253 ish feldspar, pinkish garnet, greenish epidote, colorless muscovite and a tiny amount of black...Baraga, in northern Baraga Co., Mich., is at the southern end of Keweenaw Bay. From the beach at Baraga...consisting chiefly of blackish basalt with green epidote, colorless quartz, and a tiny amount of black magnetite |  | Macey, P.H., Thomas, R.J., Minnaar, H.M., Gresse, P.G., Lambert, C.W., Groenewald, C.A., Miller, J.A., Indongo, J., Angombe, M., Shifotoka, G., Frei, D., Diener, J.F.A., Kisters, A.F.M., Dhansay, T., Smith, H., Doggart, S., Le Roux, P., Hartnady, M.I., Tinguely, C. (2017) Origin and evolution of the ∼1.9 Ga Richtersveld Magmatic Arc, SW Africa. Precambrian Research, 292. 417-451 doi:10.1016/j.precamres.2017.01.013 | Journal (article/letter/editorial) | | evolution of the ∼1.9 Ga Richtersveld Magmatic Arc, SW Africa P.H. Macey, R.J. Thomas, H.M. Minnaar, P.G. Gresse...evolution of the ∼1.9 Ga Richtersveld Magmatic Arc, SW Africa, Precambrian Research (2017), doi: http://dx.doi...evolution of the ~1.9 Ga Richtersveld Magmatic Arc, SW Africa P.H. Macey1, R.J. Thomas1, H.M. Minnaar1, P.G...for Geoscience, P.O. Box 572, Bellville, South Africa, pmacey@geoscience.org.za 2 Department of Geology...Geology, University of Stellenbosch, South Africa 3 Geological Survey of Namibia, Windhoek, Namibia |  | | Report (chapter) | | The Orange River Group: a major Proterozoic calcalkaline volcanic belt in the western Namaqua Province...Province, southern Africa D. L. Reid, H. J. Welke, A. J. Erlank & A. Moyes S U M M A R Y: The Orange River Group...subprovince within the Namaqua Province of southern Africa. Volcanic activity during deposition of the...example is the Proterozoic Namaqua Province of southern Africa (Fig. 1) which, although characterized by deformation...volcano-sedimentary suites: (1) the 2.0 Ga old Orange River Group (ORG) and (2) the 1.6-1.7 Ga old Bushmanland |  | | Report (issue) | | SOUTH WEST AFRICA DEPARTMENT OF Memoir No. MINES If THE GEOLOGY OF THE WARMBAD DISTRICT SOUTH...SOUTH WEST AFRICA An Explanation of Geological Sheets Amib (H-33-F), Umeis (H-34-A) and Nakop (H-34-B)...G. S., Geological Survey of the Union of South Africa and H. F. FROMMURZE, B. Sc., Geologist, • Geological...Geological Survey of the Union of South Africa. Published by authority of His Honour the Administrator...LTD., W/.VDHOEK. The Secretary for South West Africa, Windhoek Sir, I have the honour to submit the |  | Reid, David L, Welke, H.J, Erlank, A.J, Betton, P.J (1987) Composition, age and tectonic setting of amphibolites in the central Bushmanland Group, Western Namaqua Province, southern Africa. Precambrian Research, 36 (2) 99-126 doi:10.1016/0301-9268(87)90084-2 | Journal (article/letter/editorial) | | BUSHMANLAND GROUP, WESTERN NAMAQUA PROVINCE, SOUTHERN AFRICA D A V I D L. R E I D 1, H . J . W E L K E 2...University of Cape Town, Rondebosch 7700 (South Africa) 2Bernard Price Institute of Geophysics, University...(South Africa) 3Departrnent of Geology, University of Cape Town, Rondebosch 7700 (South Africa) (Received...Province, southern Africa. Precambrian Res., 36: 99-126. The Western Namaqua Province (WNP) of southern Africa..../" S O U T H .......~ , ii)""" ..<....... AFRICA "... "'. M ""'" Fig. 1. Tectonic subdivisions |  | | Journal (article/letter/editorial) | | BUSHMANLAND, SOUTH AFRICA By JOHN W . WEITZ F7, Villa Capri, Mouille Point, Cape Town, So. Africa If you are...is that territory bounded on the North by the Orange River and on the South by a line drawn from Loeriesfontein...line through Loeriesfontein to Goodhouse on the Orange River and the Eastern by a line from Brandvlei to...speaking, Bushmanland is divided into two parts. The Southern portion is made up of Dwyka Series (Tillite and...Kalahari Desert and even further north in South West Africa if you want to look for bushmen. Even then it is |  | | Journal (article/letter/editorial) | | southernmost portion of South West Africa (Namibia) immediately north of the Orange River in the Ai-ais region (Fig...continuous intrusive body (Fig. 2). SOUTH WEST AFRICA THE GEOLOGY OF KWELA PROSPECT v okopmund "4f/ontiCOcea...140 kilometres to the south and north of the Orange river (Fig. 2). An entire distance of 270 kms has...carbonatites and related basic to acid dykes. The southern half of the granite intrusion and the associated...granite rocks. The Tatasberg complex north of the Orange River was mapped by Blignault (1971) who identified |  | | Journal (article/letter/editorial) | | Margin of the Namaqua Metamorphic Province, South Africa Cyrille Stephane Tsakou Sonwa * , Jan van Bever...Private Bag X17, Bellville, Cape Town 7535, South Africa; jvanbeverdonker@uwc.ac.za (J.v.B.D.); rbailie@uwc...Margin of the Namaqua Metamorphic Province, South Africa. Minerals 2021, 11, 759. https://doi.org/10.3390/min11070759...0 Ga Namaqua-Natal Metamorphic Province of southern Africa is part of the global Grenvillian age orogenic...coast of Namibia to the southeast coast of South Africa (e.g., [3,11–14] and references therein). It is |  | | Journal (article/letter/editorial) | | Mesoproterozoic YasSchuitdrift Batholith, South Africa and Namibia C.A. Groenewald Council for Geoscience...Geoscience, P.O. Box 775, Upington, 8800, South Africa e-mail: cgroenewald@geoscience.org.za P.H. Macey Council...7535, South Africa e-mail: pmacey@geoscience.org.za © 2020 Geological Society of South Africa. All rights...pre-tectonic batholith that crosses the Orange River border between South Africa and Namibia. They occur in the...biotite-hornblende augen gneiss is located at the centre and southern parts of the batholith. The batholith is strongly |  | | Journal (article/letter/editorial) | | the Namaque mobile belt along the Orange (Gariep) River, South Africa W.P. Colliston and A.E. Schoch Department...Free State, PO Box 339, Bloemfontein 9300, South Africa e-mail: colliswp.sci@mail.uovs.co.za; aesc@iafrica...com © 2006 September Geological Society of South Africa ABSRACT Two periods of deformation have been documented...mapping in a strip of 3000 km2 along the Orange (Gariep) River. The mapping has enabled field discrimination...during an orogenesis that may be termed the Orange River Event (ORO, 2.0 to 1.6 Ga, with associated |  | | Book | | Koffiefontein 2. Smaller mineralised kimberlites in South Africa 2.1 The Oaks 2.2 The Zebediela Kimberlites 2.3...Lower Vaal and Middle Orange River 3.3 Bushmanland 3.4 The Lower Orange River 3.5 West Coast Onshore...their relative production contributions in South Africa were, primary (kimberlite) 8.63 million carats...significantly diamondiferous lamproites are known in South Africa where the primary sources mined are kimberlite...individual kimberlite intrusions known in South Africa, only about fifty carry significant quantities |  | | Journal (article/letter/editorial) | | MAPPING NEAR ALEXANDER BAY, NORTHERN CAPE, SOUTH AFRICA L. NGCOFE, H. MINNAAR AND L. CHEVALLIER Council...for Geoscience: P O Box 372 Bellville 7535, South Africa e-mail: Lngcofe@geoscience.org.za; Hmimiaar@geoscience...org.za o 2010 June Geological Society of South Africa ABSTRACT This .study investigates the use of Remote...mapping in an area south of the Orange River near Alexander Bay in South Africa. Landsat, ASTER and Hymap images...being the least effective. The rock types of the Orange River Group (ba.saltic andésite and rhyolite) were |  | | Book | | EarlyGermanGeologistsand Entrepreneursin South West Africa The People- Mineralogists,Geologistsand Collectors...and bordered by the cold BenguelaCurrentof the southern Atlantic Ocean, is at first glance by no means...is the 5th largest mining country in sub-Saharan Africa. Several of the mineral deposits are quite remarkabledue...Thenameof Namibia, the countryin the southwest of Africa,is takenfrom the Freiberg.Germanium was discoveredin...the incredible variety and of German South-West Africa(Deutsch- uniqueness of mineralsfrom Tsumeb. Sudwestafrika) |  | | Journal (article/letter/editorial) | | LEERKRANS FORMATION, WILGENHOUTSDRIF GROUP, SOUTH AFRICA – BACKARC BASIN TO THE AREACHAP VOLCANIC ARC R...Box 524, Auckland Park, Johannesburg, 2006, South Africa Present Address: Department of Earth Sciences,...Private Bag X17, Belville, Cape Town, 7535, South Africa e-mail: rbailie@uwc.ac.za J. GUTZMER Paleoproterozoic...Box 524, Auckland Park, Johannesburg, 2006, South Africa Present Address: Department of Mineralogy, TU Bergakademie...2006, South Africa e-mail: hmrajesh@uj.ac.za © 2011 June Geological Society of South Africa ABSTRACT The |  | | Journal (article/letter/editorial) | | University of Cape Town, Rondebosch 7700, South Africa b InstitutfiJr Petrologie, Universitiit Wien, Althanstrafle...orogenic belts in western Gondwana. In southwestern Africa, the Damara Belt separates the composite Congo...South American cratons and the cratons of southern Africa. Towards the south, the Gariep Belt continues...Belt which runs along the south coast of South Africa. Most of the rocks in these belts were deposited...oceanic crust between the various cratons in southern Africa and South America during the Pan-African epoch |  | | Journal (article/letter/editorial) | | Metamorphic Rocks and Intrusives in Namaqnaland, South Africa by T. N. CLIFFORD, 1 J . GRONOW,2 D. C. R E X 2...University of the Witwatersrand, Johannesburg, South Africa; * Department of Geology, University of Leeds,...Research Laboratory, C.S.I.R., Pretoria, South Africa ABSTRACT The metamorphic sequence in the Nababeep...Precambrian terrain in the Cape Province of South Africa are: (a) an important suite of metamorphosed sedimentary...Prieska-Marydale-Upington region and along the Orange River (De Villiers & Sohnge, 1959; Gevers et ah, 1937; |  | | Journal (article/letter/editorial) | | 1.9 Ga age for the Trompsburg intrusion, South Africa W.D. Maier a; , P. Peltonen b , G. Grantham c...Geology, University of Pretoria, Pretoria 0002, South Africa b Geological Survey of Finland, P.O. Box 96, 02151...c Council for Geoscience, Pretoria 0002, South Africa Received 23 October 2002; received in revised form...2003 Abstract The Trompsburg intrusion of South Africa is a large layered intrusion, measuring approximately...rights reserved. Keywords: layered intrusion; South Africa; Trompsburg; U^Pb dating; mantle plume 1. Introduction |  | | Report (issue) | | whole gallery full of the dramatically bright red-orange quartz specimens now emerging from diggings on...African side of the Orange River (which marks the border between northwestern South Africa and southernmost...much rarer—matrix specimens. The main strike of “Orange Quartz” (the nickname referring both to the color... “Orange” quartz on matrix, 6.2 cm, from the Orange River, Northern Cape Province, South Africa. Wright’s...thumbnail-size wiluite crystals from the Vilyui River Basin, eastern Siberia, Russia. If you’re still |  | | Journal (article/letter/editorial) | | and/or short distance of transport 3.3 6.5–7.0 Epidote s.s.s. Tanzanite Colluvial-alluvial 3.3 6.5...at Blind River-Elliot Lake,placers Canada,and and paleoplacers. Witwatersrand, Modern Africa occur in...Middle alteration. The conglomerates at(1900 Blind River-Elliot Canada, and Witwatersrand, South Proterozoic...World-classLake, deposits are at Witwatersrand, South Africa occur in stratigraphic series thatdodeveloped when...when the Earth’s atmosphere was different from Africa, Elliot Lake, Canada, Sierra Jacobina, Brazil, |  | | Book | | biotite, actinolite ("amiant"}, rutile, tourmaline, epidote and ilmenite, and syngenetic ilmenite, rutile,... that other minerals like tourmaline, rutile, epidote and scapolite, may produce tubes. Characteristic...in quartz from the Messina copper mines, South Africa (CAIRNCROSS and GUTZMER 1995). Reported also from...quartz crystal from Alpine-type veins in Yuzhnyi, Southern Ural Mts., Russia, contains a 3 cm long cavity..."Yuzhnyi" quartz deposit near Magnitogorsk in the southern Ural Height 6 cm. 64 polar Ural Mts., Russia |  | Van Schijndel, Valby, Cornell, David H., Anczkiewicz, Robert, Scherstén, Anders (2020) Evidence for Mesoproterozoic collision, deep burial and rapid exhumation of garbenschiefer in the Namaqua Front, South Africa. Geoscience Frontiers, 11 (2) 511-531 doi:10.1016/j.gsf.2019.06.004 | Journal (article/letter/editorial) | | exhumation of garbenschiefer in the Namaqua Front, South Africa Valby Van Schijndel a, 1, David H. Cornell a, b...Stellenbosch, Private Bag X1, Matieland, 7602, South Africa Institute of Geological Sciences, Polish Academy...with the unusual paragenesis garnet-hornblende-epidote-white mica-plagioclase-ilmenite-quartz. Their protoliths...exhumation of garbenschiefer in the Namaqua Front, South Africa, Geoscience Frontiers, https://doi.org/10.1016/j...Terrane of the Namaqua-Natal Province of South Africa (Fig. 1) form part of an NW-vergent foreland thrust |
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