 | | 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) | | 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) | | 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) | | 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 |  | Keiding, Jakob K., Frei, Oliver, Renno, Axel D., Veksler, Ilya V., Trumbull, Robert B. (2013) Conditions of magma crystallization in the Henties Bay-Outjo dyke swarm, Namibia: Implications for the feeder system of continental flood basalts. Lithos, 179. 16-27 doi:10.1016/j.lithos.2013.07.018 | Journal (article/letter/editorial) | | crystallization in the Henties Bay-Outjo dyke swarm, Namibia: Implications for the feeder system of continental...Available online 1 August 2013 Keywords: Etendeka Namibia Thermobarometry Magma plumbing Dyke swarm a b...t The Henties Bay-Outjo dyke swarm (HOD) in NW Namibia presents a well-exposed example of the magma feeder...overlapping, temperatures for clinopyroxene and plagioclase (~1070 to 1210 °C) in keeping with the order...highest temperatures (N1300 °C) are in a specific region of the HOD near the litho-tectonic boundary of |  | | 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 (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 |  | CURTIS, C. G., TRUMBULL, R. B., DE BEER, C. H., HARRIS, C., REID, D. L., ROMER, R. L. (2011) GEOCHEMISTRY OF THE EARLY CRETACEOUS KOEGEL FONTEIN ANOROGENIC IGNEOUS COMPLEX, SOUTH AFRICA. South African Journal of Geology, 114 (3) 353-378 doi:10.2113/gssajg.114.3-4.353 | Journal (article/letter/editorial) | | intrusive complexes in the Damaraland of northwest Namibia. Like the Damaraland granites, the Koegel Fontein...latter are prominent in the Damaraland of northwest-Namibia and have been extensively studied (e.g., Harris...formed during the early Cretaceous event south of Namibia, although dolerite dykes of that age (Figure 1)...Unlike the contemporary granitic complexes in Namibia, that of Koegel Fontein is only partly un-roofed...granites in the entire western portion of the map area (de Beer et al., 2002). Partly because its true |  | 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) | | 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...rhyolite–quartz latite dikes. Rapakivi texture with plagioclase-mantled alkali feldspar megacrysts occurs in...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 |  | | 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...single eruptive event. Phenocryst assemblages are plagioclase (An51–63), pyroxene, titanomagnetite and apatite |  | | Journal (article/letter/editorial) | | evidence for the origin of the Brandberg West area Sn–W vein deposits, NW Namibia Received: 3 June 2005 /...Springer-Verlag 2006 Abstract The Brandberg West region of NW Namibia is dominated by poly-deformed turbidites...hydrothermal quartz vein-hosted Sn–W mineralization at Brandberg West and numerous nearby smaller deposits. Fluid...quartz suggests that the ore-forming fluids at the Brandberg West mine were CO2-bearing aqueous fluids represented...(quartz–cassiterite), and 444–490°C (quartz–hematite). At Brandberg West, the oxygen isotope ratios of quartz veins |  | 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 |  | 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 (article/letter/editorial) | | small-fraction melt generation occurred beneath the region in two phases; at 145 Ma and 127.5 Ma, i.e. before...Paraná–Etendeka large igneous province outcrops over an area of 1.2× 106 km2 (Fig. 2). Its genesis has been widely...40Ar/39Ar laser-spot step-heating analyses of plagioclase grains [2,4] but consistently younger plateau...Uruguay and Brazil) and eastern part (Damaraland, Namibia) [4,26,28–31]. These range from 134 to 127.5 Ma...CFB province (Figs. 2 and 4) and outcrops over an area of ∼ 1000 km2. It contains several carbonatite complexes |  | | 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 |  | 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...and contain a cumulate component (nepheline, plagioclase). The Kalkfeld nefoidites (ijolites) and ne-syenites...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 |  | | Journal (article/letter/editorial) | | localities, including, Tafelkop, the Brandberg region, and Goboboseb (Fig. 1). These rocks are part of the...significantly higher Fo contents (up to Fo93 for the Goboboseb samples). Furthermore, the Etendeka olivines are...al. (2007) and le Roux et al. (2010). and/or plagioclase begin to fractionate and affect the overall evolution...(∼1700 ◦ C) during early plume melting in this region. The proportion of pyroxenitic (Xpx) material can...xenoliths of the 70–80 Ma Gibeon kimberlite field (Namibia). The minimum range for the Karoo basalts is based |  | Zhou, H., Hoernle, K., Geldmacher, J., Hauff, F., Homrighausen, S., Garbe-Schönberg, D., Jung, S. (2020) Geochemistry of Etendeka magmatism: Spatial heterogeneity in the Tristan-Gough plume head. Earth and Planetary Science Letters, 535. 116123 doi:10.1016/j.epsl.2020.116123 | Journal (article/letter/editorial) | | Etendeka flood basalts Large Igneous Province (LIP) Namibia plume zonation Gough a b s t r a c t The origin...and associated dikes from northern and central Namibia that are believed to have been produced during...outcropping in northern Etendeka (northwestern Namibia), are similar to the Gough-type enriched mantle...outcropping in Southern Etendeka (central western Namibia), have higher 143 Nd/144 Nd and 207 Pb/204 Pb but...voluminous Paraná - Etendeka flood basalts in Brazil and Namibia, and the submarine Rio Grande Rise and Walvis Ridge |  | | 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 |  | | Journal (issue) | | ultra-mafic igneous rocks that contain pyroxene, plagioclase and olivine. Some hydrated minerals (e.g., carbonates...feldspar and clmopyroxene) and basaltic andesite (plagioclase feldspar, with minor pyroxene, volcanic glass;...hematite patch in Meridiani Planum occurs in a region of ancient, heavily-cratered plains. The Mars Exploration...confined to the floor of Aram crater, adjacent to an area of chaotically-jumbled blocks that have collapsed...instrument has also detected olivine in the Nili Fossae region of Mars. More recently, the Spirit Mossbauer spectrometer |  | Marks, Linda, Keiding, Jakob, Wenzel, Thomas, Trumbull, Robert B., Veksler, Ilya, Wiedenbeck, Michael, Markl, Gregor (2014) F, Cl, and S concentrations in olivine-hosted melt inclusions from mafic dikes in NW Namibia and implications for the environmental impact of the Paraná–Etendeka Large Igneous Province. Earth and Planetary Science Letters, 392. 39-49 doi:10.1016/j.epsl.2014.01.057 | Journal (article/letter/editorial) | | olivine-hosted melt inclusions from mafic dikes in NW Namibia and implications for the environmental impact of...basaltic dikes in the Etendeka province of NW Namibia. The melt inclusions have Mg-rich basaltic bulk...Bay–Outjo dike swarm (HOD) in the Damara Belt of Namibia based on high-resolution aeromagnetic data Landsat...olivinehosted melt inclusions from basaltic dikes in NW Namibia. Melt inclusions have become a popular tool for...dikes from the Henties Bay–Outjo dike swarm in NW Namibia demonstrated that they represent the magma feeder |  | | 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 |
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