 | Gehring, Andreas U., Riahi, Nima, Kind, Jessica, Almqvist, Bjarne S.G., Weidler, Peter G. (2014) The formation of the Namib Sand Sea inferred from the spatial pattern of magnetic rock fragments. Earth and Planetary Science Letters, 395. 168-172 doi:10.1016/j.epsl.2014.03.041 | Journal (article/letter/editorial) | | and petrographic evidence points towards the Orange River catchment as the most prominent one. Little...indicates no significant sand source other than the Orange River and thus a predominant northward direction of...deposition in the Namib Sand Sea, most likely during river transport and under high current conditions along...evidence for a stable erosion regime in the Orange River catchment with a steady release of magnetic...south western Africa, is a classical example of a costal desert (Laity, 2009). The Orange River is the largest |  | | 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 |  | | Journal (article/letter/editorial) | | Alkaline rocks in the Kuboos-Bremen Igneous Province, southern Namibia: the Grootpenseiland and Marinkas Kwela... South Africa The early Cambrian Kuboos-Bremen Igneous Province, of northwestern South Africa and southern...Kwela Complexes, lie immediately north of the Orange River and are amongst the few that show this wide...continuous outcrop between the Orange River and Kanabeam; northeast from the Orange River, the sequence from Si-undersaturated...north side of the Orange River. Alkali granite crops out to the south of the river. It apparently forms |  | | Journal (article/letter/editorial) | | Alkaline rocks in the Kuboos-Bremen Igneous Province, southern Namibia: the Grootpenseiland and Marinkas Kwela... South Africa The early Cambrian Kuboos-Bremen Igneous Province, of northwestern South Africa and southern...Kwela Complexes, lie immediately north of the Orange River and are amongst the few that show this wide...continuous outcrop between the Orange River and Kanabeam; northeast from the Orange River, the sequence from Si-undersaturated...north side of the Orange River. Alkali granite crops out to the south of the river. It apparently forms |  | | Thesis/Dissertation | | Namaqualand pegmatite belt, Northern Cape, South Africa by Minenhle Sinethemba Maphumulo Dissertation...Namaqualand pegmatite belt, synonymous with the Orange River pegmatite belt (ORPB), consists of > 30 000...Namaqua-Natal Metamorphic Province (NNMP) in Southern Africa at ca. 1 Ga. The central part of the belt is...(and older) pegmatites, which are dominated by magnetite, ilmenite and titanite and host only a low concentration.................................... 24 2.3. Orange River pegmatite belt (ORPB) ..................... |  | | Book (volume) | | DIALLAOE MICA SPINEL AND PICOTITE PLEONASTE • MAGNETITE CHROMITE JLMENITE RUTILE PYRRHOTITE GRAPHITE CYANITE...DIAMOND-BEARING ALLUVIAL GRAVELS OF THE UNION OF SOUTH AFRICA DIAMOND-BEARING GRAVELS DRAINAGE WEATHERING TRANSPORTATION...ALLUVIAL DIAMONDS THE SOUTH-WEST AFRICA DIAMOND DEPOSITS THE VAAL RIVER ALLUVIAL GRAVELS THE DIAMOND-BEARING...following plate n6 THIN SECTION (40, x 12) ENSTATITE MAGNETITE RocK, jAGERSTHIN SECTION FONTEIN MINE 121. THIN...OCTAHEDRON CONTACT TwINS RAisEo MARINE GRAVEL TERRACE RIVER AT THE MoUTH OP THE OLIPHANT's 202. 202. 203. |  | | Journal (article/letter/editorial) | | the most important aquifers of Namibia. In the southern part of the country, structural analysis of the...cluster in the Proterozoic Sinclair Sequence and Orange River Group. A number of areas with increased mineral...and not Damaran magnetic lithologies such as magnetite quartzites and diamictites of the Chuos Formation...orogen and ends in the northwest close to the southern banks of the Etosha pan at about (19°S/16°15’E... Distinct magnetic anomalies occur within the southern Central Zone (sCZ; Miller, 1983a) and with still |  | | Journal (article/letter/editorial) | | of colorless to smoky quartz, black lustrous magnetite and green epidote. "I am mailing you this small...stream of water which empties into the Housatonic River at Cornwall Bridge. From the north edge of Guna...family were also present. It was thought that magnetite and garnet would predominate in the ROCKS AND...schist, dark gray phyllite, and a little black magnetite. The locality is in a heavily wooded, hilly section...monazite with smaller amounts of lustrous black magnetite and colorless brilliant zircons (fl. brown under |  | | 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) | | colliswp@sci.uovs.ac.za © 2003 Geological Society of South Africa ABSTRACT The western part of the Mid-Proterozoic...thick unit comprises quartz-muscovitebiotite-magnetite schist, quartz-muscovite-biotitesillimanite-garnet...Iron-formation bands are present that are composed of magnetite, barite, grunerite-cummingtonite, and manganese-rich...gruneritecummingtonite, sillimanite, garnet and magnetite. Three types of clasts are common, namely gahnite...gahnite (25%), garnet (1 to 5%), grunerite (1%) and magnetite (<1%). The gahnite-bearing parageneses in the |  | | Journal (article/letter/editorial) | | OF KIMBERLEY, VICTOR DIAMOND-BEARING SOUTH AFRICA. HARTOG. WITa x BmLIOORA•'a¾ Or Tar. SUBJECTBY...working levelsin the De BeersMine, Kimberley, South Africa. Beginningwith the •,56o-foot level, five specimens... garnet; R, ruffle; C, calcite; solid black, magnetite. Kimberleyand on the farm Vooruitzigt,the boundaryline...serpentine apparently massive; G, garnet; solidblack,magnetite. NOTE ON PERIDOTITE OF KIMBERLEY. 44.I •...phlogopite;G, garnet; H, vein of limonite; solid black, magnetite. 1,68o E., 1,72o N. and C., 1,76o N. and W., |  | 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 |  | | 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 |  | | 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 |  | von der Heyden, Bjorn P., Frith, Matthew G., Bernasek, Steven, Tylizszak, Tolek, Roychoudhury, Alakendra N., Myneni, Satish C.B. (2018) Geochemistry of Al and Fe in freshwater and coastal water colloids from the west coast of Southern Africa. Geochimica et Cosmochimica Acta, 241. 56-68 doi:10.1016/j.gca.2018.08.043 | Journal (article/letter/editorial) | | coastal water colloids from the west coast of Southern Africa Bjorn P. von der Heyden, Matthew G. Frith,...coastal water colloids from the west coast of Southern Africa, Geochimica et Cosmochimica Acta (2018), doi:...coastal water colloids from the west coast of Southern Africa Bjorn P. von der Heydena,*, Matthew G. Frithb...University, Private Bag X1, Matieland, 7602, South Africa b. Department of Geosciences, Princeton University...Olifants and Orange Rivers) and marine sampling sites on the western margin of Southern Africa. The bulk |  | | 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) | | ORG~. W. STow, Esq., F.G.S., of Queenstown, South Africa. W i t h Descril~tions o f the SrscIXP.~s, by Prof................. 581 Section 1.--From the Modder river to Burger's Dam 582 Section 2.--From Burger's Dam...--From the Great Salt Pan to the junction of the Orange and Vaal rivers .................. 594 Sectinn...---From the junction of the rivers towards the southern termination of the Campbell-Randt 9 602 Retrospect...banks of the Modder river before its junction with the Riot, towards the southern point of the great Campbell-Randt |  | | 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; |  | 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...zircons mirror the orogenic events that affected southern Africa since the Archean. Damara (0.5–0.6 Ga) and...peaks are prominent throughout Namibia, from the Orange mouth to the Namib and Skeleton Coast Ergs, and |  | | Journal (article/letter/editorial) | | known from five sedimentary environments; washout, river, aeolian, beach, and continental shelf. In each...For example, deposits from a waning flood-stage river will include many different size, shape and density...particles but a subsequent lower energy normal river flow might remove only the smaller, flatter or the...commercial value. The mineral has been recovered from river sediments and sold, but, unusually for a placer...placers derived from glacial debris followed by river or beach reworking. Mathematical analysis of mineral |  | | Report (chapter) | | palaeomagnetic data from the Kaapvaal Craton, South Africa Shawn Letts, Trond H. Torsvik, Susan J. Webb and...palaeomagnetic data from the Kaapvaal Craton, South Africa SHAWN LETTS1,2, TROND H. TORSVIK1,3,4,5*, SUSAN...South Africa 2 Anglo American, P.O. Box 61587, Marshalltown, Johannesburg 2107, South Africa 3 Physics...well-dated 2060.6 + 0.5 Ma Phalaborwa Complex in South Africa (Kaapvaal Craton) are of excellent quality. High...High unblocking components are carried by magnetite and single polarity remanence directions (mean declination |  | | Journal (article/letter/editorial) | | Mesoproterozoic Stolzenfels Enderbite (Komsberg Suite), South Africa and Namibia P.H. Macey and Y. Abrahams Council...Geoscience, P.O. Box 572, Bellville, 7535, South Africa e-mail: pmacey@geoscience.org.za; yabrahams@geoscience...Stellenbosch, South Africa email: jmiller@sun.ac.za © 2018 June Geological Society of South Africa Abstract The...pluton that crosses the Orange River border between Namibia and South Africa. It is a member of the late-...elongate pluton straddling the Orange River border between South Africa and Namibia (Figures 1 and 2) |  | 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) | | 201–212 The Marinkas Quellen Carbonatite Complex, southern Namibia; carbonatite magmatism with an uncontaminated...Geology, Rhodes UniÕersity, Grahamstown, 6140, South Africa Received 3 December 1996; accepted 12 February...Abstract The Marinkas Quellen Carbonatite Complex, in southern Namibia, forms part of the ca. 490–550 Ma Kuboos-Bremen...not a significant component of sub-continental southern Namibia immediately after the Neoproterozoic closure...Paleoproterozoic to Neopro- terozoic crust of southern Namibia ŽFig. 1.. In this paper, we show that |  | | Journal (article/letter/editorial) | | olivine and pyroxene). A few grains of black magnetite, brownish quartz, and a number of flakes of goldenyellow...whitish muscovite, and a tiny amount of black magnetite. The coarse material, and there is a lot of it...21ship Spanish fleet sank in a hurricane off the southern coast of Florida. The fleet was under the command...label. Orange-pink sand from Prague, Okla. Here is a beautiful sand. It is a fine grained, orange-pink...orange-pink sand consisting entirely of orange-pink quartz. Glen E. Kiser, Douglass, Kans., donated it. "From Hwy |
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