 | | Book | | AiAiba / farm Anibib 136 8 Grosse Spitzkoppe, Erongo 9 , .,/, loringa tree . Khomas Highland...Aus Nature conservation, Erongo 16 Welwitschia, Goboboseb Mountains 17 . :~~..,-::__ ::...,.;_...Northwest Region including Damaraland The Central Namib Desertand Escarpment The Spitzkoppen The Erongo Mountains...The Central Escarpment- The Nauchas-Gamsberg-Hakos Area West and South of Rehoboth The Central and South-CentralDeposits...Copper Deposits The South The Pegmatitesin Central Namibia Luderitz and the Diamonds 44 49 241 254 272 275 |  | | Journal (article/letter/editorial) | | Gross Spitzkoppe topaz granite, central western Namibia: a geochemical and Nd–Sr–Pb isotope study Stephen...igneous complexes that formed in the Damaraland of Namibia during an episode of continental rifting and magmatism...melting is by basaltic underplating of the source region in the lower crust. The range in initial Nd and...2004 Elsevier B.V. All rights reserved. Keywords: Namibia; Anorogenic; A-type granite; Lower crust; Radiogenic...Survey of Namibia, Division of Economic Geology, P.O. Box 2168 1, Aviation Road, Windhoek, Namibia. Tel.: |  | | Journal (article/letter/editorial) | | Gross Spitzkoppe and Klein Spitzkoppe stocks in Namibia: Topaz-bearing A-type granites related to continental...Geological Survey of Namibia, P.O. Box 2168, 1 Aviation Road, Windhoek, Namibia c Rosh Pinab Zinc Corporation...Corporation (Pty) Ltd, P.O. Box 115, Rosh Pinab, Namibia Received 3 February 2006; accepted 4 December...The anorogenic Damaraland intrusive complexes in Namibia belong to the bimodal Paraná–Etendeka Large Igneous...in the Gross Spitzkoppe, Klein Spitzkoppe, Erongo, Brandberg, Messum, Cape Cross, and Paresis complexes |  | | Journal (article/letter/editorial) | | Etendeka Volcanism of the Goboboseb Mountains and Messum Igneous Complex, Namibia. Part I: Geochemical Evidence...REVISED TYPESCRIPT ACCEPTED JULY 30, 1997 The Goboboseb Mountains and Messum Complex represent a major Cretaceous...lower sequence of mafic lavas, followed by the Goboboseb quartz latite members, the Messum Mountain Basalts...Energy, P.O. Box 2168, Windhoek 9000, Republic of Namibia. ‡ Present address: Research School of Earth Sciences...lavas are inferred to have been erupted from the Goboboseb–Messum Centre. Chemically, the LTZ.H melts are |  | | Journal (article/letter/editorial) | | magmatism in the Cretaceous Paresis ring complex, Namibia: evidence for mixing of crust and mantle-derived...the Congo craton and related inliers in northern Namibia. The comendites are peralkaline, highly differentiated...break-up of Gondwana in the early Cretaceous in an area then underlain by the Tristan mantle plume ŽPeate...ŽPeate, 1997.. The Damaraland Igneous Province in Namibia is a well-exposed and preserved group of some 20...Damaraland complexes into granitic ŽBrandberg, Erongo, Spitzkoppe., differentiated layered basic complexes |  | | Journal (article/letter/editorial) | | and Picrite Dykes of the Southern Etendeka Region, NW Namibia: Windows into the Role of the Tristan Mantle... Abundant dykes in the southern Etendeka region, NW Namibia, mostly contain 8–20% MgO. Almost all can...forsteritic macrocrysts is cut by the 131 Ma Brandberg plutonic complex. Forward and inverse modelling...lithosphere thickness beneath and adjacent to NW Namibia, and there was intense melting ( Tp = >1500–1700°C)...WORDS: dykes; crustal contamination; mantle plume; Namibia; picrites INTRODUCTION The extent to which decompression |  | | Journal (issue) | | located on the slopes of the Lelatema Mountains in the Manyara Region, about 70 km southeast of the town...the Goboboseb Mountains, about 35 miles west of the town of Brandberg, Daures Constituency, Erongo Region...Region, Namibia. The occurrence was discovered in the early 1950s by Gawie Cloete, an assistant government...government livestock inspector. He returned to the area 30 years later, found a crystal-bearing horizon in...cm, from a 2019 find at Pedra Azul in the Medina area, Minas Gerais, Brazil. Will Johnson collection; |  | | Journal (article/letter/editorial) | | Igneous Province: New palaeomagnetic data from Namibia Sarah C. Dodd a,∗ , Conall Mac Niocaill b , Adrian...Paraná–Etendeka volcanic province of Brazil and Namibia represents something of an enigma amongst LIPs...414 (2015) 16–29 an area greater than 1.2 Mkm2 (Peate, 1997). Despite its large area and volume (approximately...lie between the latitudes 22◦ S and 17◦ 10 S in Namibia (Fig. 1). The extrusive rocks studied are bimodal...the Tafelberg, Tafelkop and Khumib basalts. In the area sampled, the Tafelberg (upper) and Tafelkop (lower) |  | | Journal (article/letter/editorial) | | the Grootberg and Wereldsend quartz latites of Namibia, but the much higher Pb contents of the Namibian...a total volume estimated to exceed 1 Mkm³ and an area greater than 1.2 AC Mkm³ (Peate, 1997). Most of...volcanic rocks occuping approximately 2% of this area. The latter have unusually high temperatures, >1000°C...Polo et al., 2018). In Brazil, where the largest area of silicic volcanic rocks occur, they have been...Lucchetti et al., 2018). ACCEPTED MANUSCRIPT In Namibia all of the low-Ti silicic units are interpreted |  | | Journal (article/letter/editorial) | | granites of the Beijing area in China, the anorogenic ~130 Ma granites of western Namibia, and the 20–15 Ma...Paleoproterozoic or Archean continental crust, in Namibia it was continental rifting and mantle plume activity...remelting of newly hybridized lower crust. In Namibia, partial melting of subcontinental lithospheric...Geological Survey of Namibia, P.O. Box 2168, 1 Aviation Rd., Windhoek, Namibia. 0024-4937/$ - see front...associated with continental rifting in Finland, China, Namibia, and the western United States. The main aim of |  | | Journal (article/letter/editorial) | | Etendeka Volcanism of the Goboboseb Mountains and Messum Igneous Complex, Namibia. Part II: Voluminous Quartz...REVISED TYPESCRIPT ACCEPTED JULY 30, 1997 The Goboboseb–Messum volcanic centre is the source of two voluminous...voluminous silicic eruptive sequences, the Goboboseb quartz latites (Units I–III), and the Springbok quartz...Parana´ suggests eruptive volumes of ~2320 km3 (Goboboseb units) and 6340 km3 (Springbok unit). The latter...the assemblages changing progressively from the Goboboseb unit through to the Springbok unit. Although pyroxene |  | Lustrino, Michele, Melluso, Leone, Brotzu, Pietro, Gomes, Celso B., Morbidelli, Lucio, Muzio, Rossana, Ruberti, Excelso, Tassinari, Colombo C.G. (2005) Petrogenesis of the early Cretaceous Valle Chico igneous complex (SE Uruguay): Relationships with Paraná–Etendeka magmatism. Lithos, 82 (3) 407-434 doi:10.1016/j.lithos.2004.07.004 | Journal (article/letter/editorial) | | subordinate volcanic rocks and dykes cropping out over an area of about 250 km2. This complex is strictly linked...VC and the coeval Paresis granitoids (Etendeka, Namibia) are evidenced in this paper. The genetic similarities...latites (s.l.) of the Awahab Formation (Etendeka region, Namibia). D 2005 Elsevier B.V. All rights reserved...are located in Angola (Marzoli et al., 1999) and Namibia (Etendeka; Ewart et al., 1998a,b, 2004a,b; Thompson...mostly concentrated in the coastal Etendeka region in Namibia (Marsh et al., 2001; Ewart et al., 2004b) |  | | Journal (article/letter/editorial) | | an adventure of a lifetime. Spend two weeks in Namibia, a country of striking scenery, exotic animals...Africa. Namibia’s mineral deposits—Tsumeb, Erongo, Brandberg, Klein Spitzkoppe, and others—are world renowned...felt that additional days should be scheduled in Namibia to offset the time (and expense) spent on the long...fiveday tour of the diamond deposits in the Oranjemund area. After some discussion, the group size was limited...their spouses, and four other friends. Our tour of Namibia and South Africa was now extended for a third week |  | | Journal (issue) | | money. lnspired by promotional brochures touting "mountains füll of rich gold and silver ores, sulphurets...pounds. Painting Century Plant in the Big Bend area (1939) by Jerry Bywaters. Courtesy Amon Carter Museum...that railroads were being constructed through the area. George F. Kunz described a sky-blue celestine crystal...cutting coarse-grained reddish granites of the hilly region thereabouts, known geologically as the Llano Uplift... Fine topaz crystals continued to come from the area for most of the 20th century, many from fee-collecting |  | Harris, Chris, le Roux, Petrus, Cochrane, Ryan, Martin, Laure, Duncan, Andrew R., Marsh, Julian S., le Roex, Anton P., Class, Cornelia (2015) The oxygen isotope composition of Karoo and Etendeka picrites: High δ18O mantle or crustal contamination?. Contributions to Mineralogy and Petrology, 170 (1) doi:10.1007/s00410-015-1164-1 | Journal (article/letter/editorial) | | basalt dykes from the ca 135 Ma Etendeka LIP of Namibia and Karoo-age picrite dykes from Dronning Maud...study are from three locations: the Tuli Syncline region of southern Zimbabwe and NE Botswana, Mwenezi (formerly...Zimbabwe (Cox et al. 1984), and the Ahlmannryggen region of western Dronning Maud Land that forms part of...The Etendeka samples analysed are from the Goboboseb Mountains that surround the Messum Igneous Complex...situated west of Mwenezi (Fig. 1) and comprises an area of volcanic outcrop of 240 by 50 km. The majority |  | | Journal (article/letter/editorial) | | the Alkaline Core of the Messum Igneous Complex, Namibia: Evidence for the Progressively Decreasing Effect...3 GEOLOGICAL SURVEY, P.O. BOX 2168, WINDHOEK, NAMIBIA RECEIVED NOVEMBER 12, 1998; REVISED TYPESCRIPT...ACCEPTED APRIL 12, 1999 The Messum complex of NW Namibia, a part of the Paraná– Etendeka volcanic province...Etendeka Igneous province in the Damaraland region of northwest Namibia (Fig. 1) contains numerous anorogenic...gabbroic part of the complex and the surrounding Goboboseb volcanic rocks (from Ewart et al., 1998a). Within |  | Trumbull, R. B., Reid, D. L., de Beer, C., van Acken, D., Romer, R. L. (2007) Magmatism and continental breakup at the west margin of southern Africa: A geochemical comparison of dolerite dikes from northwestern Namibia and the Western Cape. South African Journal of Geology, 110 (2) 477-502 doi:10.2113/gssajg.110.2-3.477 | Journal (article/letter/editorial) | | comparison of dolerite dikes from northwestern Namibia and the Western Cape Robert B. Trumbull GeoForschungsZentrum...volcanic margin of southern Africa from northwestern Namibia to the Cape Peninsula. These dikes are under study...(HOD) in the high magma-flux Etendeka Province of Namibia, and the False Bay dike swarm from the low-flux...asthenospheric sources. The dolerites from the HOD swarm in Namibia are mainly low-Ti tholeiites like their counterparts...rise in MgO contents of dikes in northwestern Namibia (maximum 8 weight % MgO for False Bay versus 16 |  | | Journal (issue) | | Articles Famous mineral localities: The Erongo Mountains, Namibia . . . . . . . . . . . . . . . . . . ....cm, with schorl and feldspar, from the Erongo Mountains, Namibia. Desmond Sacco collection; Bruce Cairncross...on the mineralogical treasures of the Erongo Mountains in Namibia. Uli’s financial support made possible...Rhodesia (Zimbabwe) and Tsumeb, Southwest Africa (Namibia). He had a mini-van-like truck loaded with minerals...try to bring an example of a wine from their local area as a treat, but quite often the gesture would be |  | KIRSTEIN, LINDA A., PEATE, DAVID W., HAWKESWORTH, CHRIS J., TURNER, SIMON P., HARRIS, CHRIS, MANTOVANI, MARTA S. M. (2000) Early Cretaceous Basaltic and Rhyolitic Magmatism in Southern Uruguay Associated with the Opening of the South Atlantic. Journal of Petrology, 41 (9) 1413-1438 doi:10.1093/petrology/41.9.1413 | Journal (article/letter/editorial) | | evolved rock types towards the margins of such an area of plume-related magmatism. The mafic lavas are...the less voluminous Etendeka volcanic field of Namibia, which formed a single continental flood basalt...widely scattered in Brazil, Paraguay, Angola and Namibia (Gibson et al., 1995; Milner et al., 1995). ∗Corresponding...vicinity of sampling. The volcanic rocks from the area to the east of Alferéz, and as far north as Treinte...compositions and degrees of partial melting across an area of plume-related magmatism. This magmatism provides |  | | Journal (article/letter/editorial) | | intrusives with and without associated carbonatite, Namibia B. Bühn a,b,*, R.B. Trumbull c a Institut fur...from the Cretaceous Damaraland igneous province (Namibia), one with and one without associated carbonatite...Ijolite; Nepheline foidite; Nepheline syenite; Namibia * Corresponding author. Instituto de Geociências...Early Cretaceous Damaraland igneous province in Namibia, one of which is associated with carbonatite, while...Damaraland Igneous Province in northwestern central Namibia, and occur within 15 km of each other (Fig. 1) |  | Harris, Chris, Mulder, Kwenidyn, Sarkar, Saheli, Whitehead, Benjamin, Roopnarain, Sherissa (2018) Petrogenesis of low-δ18O quartz porphyry dykes, Koegel Fontein complex, South Africa. Contributions to Mineralogy and Petrology, 173 (4) doi:10.1007/s00410-018-1457-2 | Journal (article/letter/editorial) | | was concentrated in the Damaraland province of Namibia and Angola 1000 km NNW of Koegel Fontein. The Damaraland...et al. 2007), and are present along the coastal region near the South AfricanNamibian border and further...contemporaneous with the Damaraland complexes of NW Namibia (e.g. Trumbull et al. 2004; Wigand et al. 2004)...similarities with its counterparts of the same age in NW Namibia (Harris 1995), it is distinct because it contains...Neoproterozoic marbles and sandstones are also present in the area (de Beer 2010). The Pan African is a major tectono-thermal |  | | Book | | REPUBLIC OF NAMIBIA - MINISTRY OF MINES AND ENERGY GEOLOGICAL SURVEY THE MINERAL RESOURCES OF NAMIBIA FIRST...ENERGY Of the several hundred minerals present in Namibia, around sixty have been exploited. some, such as...base metals and industrial minerals have helped Namibia rank amongst the top five mining countries in Africa...terms of production and reserves. In this context, Namibia is a major producer of copper, lead, zinc, cadmium...unpublished. It is evident that mineral exploration in Namibia, as elsewhere. has changed from serendipitous discoveries |  | | Journal (issue) | | 5 cm. Rudnaya mine, Saranovskoye deposit, Perm' region, Urals, Russia. Specimen: Nazarovs. Photo: Michael...Kukisvumchorr Deposit (vol. 7), Kerch (vol. 8), Ilmeny Mountains (vol. 9), Volodarsk—Volynskii (vol. 12), Ural... 1969). The NNE trending pluton of 20 x 7 km in area extending from the Upper Sanarka settlement to the...rocks (Ferschtater er al., 1994). The relief of the region is smooth and weakiy hilly (Figure 1). The pluton...pluton, 1. Typical retief of the Borisovskiy pluton area, Photo: S.. Kolisnechenko, 2012. 14 which was |  | | Journal (article/letter/editorial) | | higher oxygen fugacities and are dominated by magnetite and have titanite as an accessory mineral. Post-eruption...rhyolites–emphasizing new data from the Wah Wah Mountains of southwestern Utah–and compares them to Proterozoic...for rhyolite lavas from in and near the Wah Wah Mountains of southwestern Utah (Fig. 2). Major and trace...throughout the province. The young lithosphere in this region, with its mafic crust, does not generally appear...of topaz rhyolites is entirely included in the region of Cenozoic extensional faulting (Fig. 1). Their |  | | Journal (article/letter/editorial) | | existed. This is supported by the presence in the area of regional gravity highs, which may be caused by...the Gulf of Aden) of the EARS (Fig. 3). The Afar region is characterized by fissure-fed tholeiitic volcanism...Ethiopian and East African plateaux, is the general area, where a mantle plume is impinging beneath the continental...and the other beneath the Ethiopian rift and Afar region. An interesting concept proposed by Ebinger and...The Tharsis region on Mars is approximately 4000 km wide and 10 km high, covering an area >6.5106 km2 |
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