 | | Journal (article/letter/editorial) | | resources of anorogenic alkaline complexes in Namibia: A review F. Pirajno a a Geological Survey of...resources of anorogenic alkaline complexes in Namibia: A review, Australian Journal of Earth Sciences:...resources of anorogenic alkaline complexes in Namibia: A review F. PIRAJNO Downloaded by [Dalhousie...Plain Street, East Perth, WA 6004, Australia. In Namibia there are numerous anorogenic alkaline complexes...Luderitz alkaline province; and (iv) Kuboos-Bremem igneous province. The rocks of these complexes include |  | 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...highest temperatures (N1300 °C) are in a specific region of the HOD near the litho-tectonic boundary of...V. All rights reserved. 1. Introduction Large Igneous Provinces on continental crust (continental flood |  | 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) | | Petrogenesis of the early Cretaceous Valle Chico igneous complex (SE Uruguay): Relationships with Paraná–Etendeka...2005 Abstract The early Cretaceous (~130 Ma) igneous complex of Valle Chico (SE Uruguay) is made up of felsic...rocks and dykes cropping out over an area of about 250 km2. This complex is strictly linked with the formation...formation of the Paraná–Etendeka Igneous Province and the first stages of the South Atlantic Ocean rifting...mafic and felsic rocks of the Paraná–Etendeka Igneous Province. Decompression melting of the lower crust |  | 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) | | EARLY CRETACEOUS KOEGEL FONTEIN ANOROGENIC IGNEOUS COMPLEX, SOUTH AFRICA C.G. CURTIS Department of Geological...South Africa ABSTRACT The Koegel Fontein Igneous Complex in the Western Cape Province of South Africa...first geochemical study of the Koegel Fontein Complex. Two groups of mafic units are distinguished based...along the continental margin occur in and near the complex. These regional dolerites are much more homogeneous...magmas makes up the bulk of the Koegel Fontein complex, with the large Rietpoort granite pluton and quartz-porphyry |  | | Journal (article/letter/editorial) | | differentiated members of the alkaline series: the Messum complex, Namibia S. B. BLANCHER1,2,*, P. D’ARCO1,2, M. FONTEILLES1...characterized from the alkaline series of the Messum complex in which nepheline occurs in a succession of...trend, several high-silica nephelines from the Messum rocks as well as from other reported occurrences...chemical composition, alkaline magma series, Messum complex, Namibia. Introduction NEPHELINE, the most common...Ne75Qz25 Ne50An50) is represented by the shaded area. Its intersection with the basal plane corresponds |  | 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) | | intrusives with and without associated carbonatite, Namibia B. Bühn a,b,*, R.B. Trumbull c a Institut fur...suites from the Cretaceous Damaraland igneous province (Namibia), one with and one without associated...terms of magma source and evolution. The Etaneno complex occurs in close spatial proximity to the Kalkfeld...Kalkfeld bimodal carbonatite – alkali silicate complex, and is dominated by nepheline (ne)-monzosyenites and...Ijolite; Nepheline foidite; Nepheline syenite; Namibia * Corresponding author. Instituto de Geociências |  | | Journal (article/letter/editorial) | | Ltd., London The geochemistry of the Messum Igneous Complex, South-We& Africa MORNA MATEIAS Department...twenty-eight representative rocks from the JGxwum Qneoue Complex of South-West Africa ia diecueeed and iihretrated...(NOCKOLDSand ALLEN, 1955). The rocks of the Messum Ring-Complex provide excellent material for the study...hybrid rock series, as well as data for other igneous and cumulative rocks which show a wide range in...The general geology and petrology of the Messum Igneous Complex have been described in separate papers |  | | Journal (article/letter/editorial) | | des sfidlicheu A_frikas erhalten geblieben, in Namibia, in Zentralafrika, im Transkei und in Lesotho und...preserved in three main areas of southern Africa, in Namibia, in central South Africa, Transkei and Lesotho...previously recognised, the flood basalt pile being more complex than was originally thought. Rocks from the central...of South-East Zimbabwe Karoo Volcanic Rocks in Namibia Geochronology of Karoo Vulcanism General Geochemistry...Cretaceous volcanic rocks are found in north-west Namibia. The best preserved and most voluminous outcrop |  | | Journal (article/letter/editorial) | | magmas: implications from natural carbonatites, Namibia B. Bühn Instituto de Geoci^encias, University... Summary Two bimodal carbonatite complexes in Namibia of Cretaceous age are explored as to the presence...geochemical evolution of low-Si carbonatite bodies in Namibia, and addresses the response of carbonatite compositions...carbonatites in northern Namibia, which are part of the Cretaceous Damaraland Igneous Province extending SW–NE...and Ondurakorume bimodal carbonatite complexes, Namibia (after Prins, 1981) lithosphere travelled NE over |  | Riishuus, M. S., Peate, D. W., Tegner, C., Wilson, J. R., Brooks, C. K. (2008) Petrogenesis of Cogenetic Silica-Oversaturated and -Undersaturated Syenites by Periodic Recharge in a Crustally Contaminated Magma Chamber: the Kangerlussuaq Intrusion, East Greenland. Journal of Petrology, 49 (3) 493-522 doi:10.1093/petrology/egm090 | Journal (article/letter/editorial) | | (nepheline syenite) in the centre; modal layering and igneous lamination are locally developed but there are...margin and belongs to the Palaeogene North Atlantic Igneous Province (e.g. Saunders et al., 1997) (Fig. 1)...the Kangerlussuaq area is volumetrically dominated by the Kangerlussuaq Alkaline Complex, which includes...intrusions in world. To the authors’ knowledge the Brandberg Complex (Schmitt et al., 2000), and Khibina and Lovozero...dipping 30^608 towards the centre (Fig. 2a) and igneous lamination in the form of platy feldspars (Fig |  | | Journal (article/letter/editorial) | | Fenitisation around the Monchique alkaline complex, Portugal N. M. S. ROCK L1THOS Rock, N. M. S. 1976:...1976: Fenitisation around the Monchique alkaline complex, Portugal. Lithos 9, 263-279. Oslo. ISSN 0024-4937...massif The intrusion, shown in Fig. 1, covers an area of some 83 km -~and forms a mountainous backcloth...andalu~site in the vicinity of the intrusion. The igneous rocks consist of nepheline syenites ...widely-separated outcrops in the Oldoinyo Dili carbonatite complex. This extreme variability is shown in irregular |  | Gibson, S. A., Thompson, R. N., Leonardos, O. H., Dickin, A. P., Mitchell, J. G. (1999) The limited extent of plume-lithosphere interactions during continental flood-basalt genesis: geochemical evidence from Cretaceous magmatism in southern Brazil. Contributions to Mineralogy and Petrology, 137 (1) 147-169 doi:10.1007/s004100050588 | Journal (article/letter/editorial) | | experienced two phases of ma®c magmatism. These igneous events occurred 50 Ma apart and therefore represent...ParanaÂ-Etendeka CFB (Fig. 1) is one of the world's largest igneous provinces and has a preserved volume of >800,000...alkaline igneous complexes are also shown, together with the distribution of alkaline igneous complexes...the Lages volcanic ®eld and the AnitaÂpolis igneous complex in southern Brazil. The Early-Cretaceous (132...(132 Ma; Renne et al. 1993) AnitaÂpolis complex was emplaced into Proterozoic granites of the Dom Feliciano |  | | Report (issue) | | Silicic volcanism: An undervalued component oflarge igneous provinces and volcanic rifted margins •. •. . •...Valente 159 II. Volcanic passive tnlll'gin of Namibia: A B. Corner, J. Canwright, and R. Swan pote~tialfields...temporal and spatial relationships are much more complex. Volcanic rifted margins can be thought of as comprising...well-defined components (Menzies et al.): (I) large igneous provinces (LIPs), comprising thick basaltic and/or...show how dike ystems can be u ed to unravel a complex extensional hi tory influenced by Karoo volcani |  | Gibson, S.A., Thompson, R.N., Day, J.A., Humphris, S.E., Dickin, A.P. (2005) Melt-generation processes associated with the Tristan mantle plume: Constraints on the origin of EM-1. Earth and Planetary Science Letters, 237 (3) 744-767 doi:10.1016/j.epsl.2005.06.015 | Journal (article/letter/editorial) | | contain a 10% to 15% contribution from a melt source region with low eNd, 206Pb / 204Pb and high [La / Nb]n...This relationship may also apply to other large igneous provinces and ocean islands along their associated...Appendix A; [9,21–24]) of Cretaceous mafic potassic igneous rocks from eastern South America and south-west...Tristan plume-derived magmas is restricted to mafic igneous rocks and, in the case of the Paraná–Etendeka...samples of mafic potassic igneous rocks from Brazil, Paraguay and Namibia for trace- and rare-earth elements |  | | Report (issue) | | Kearns 12. Post-Paleozoic magmatism in Angola and Namibia: A review . . . . . . . . . . . . . . . . . . ...propagation into the southern Tyrrhenian backarc region. . . . . . . . . . . . . . . . . . . . . . . ....Saharan zone, Cameroon volcanic line, Angola and Namibia, and the East African Rift system. This Special...in a schematic lithospheric profile of the Bayuda area includes predominantly granitoids, migmatites, and...studies of xenoliths from the lower crust in the region are from the Arabian plate, where juvenile Neoproterozoic |  | | Book | | oceanic volcanic 128 island basalts 3.3 Large igneous provinces (LIP): oceanic p1ateaux and continenta1...Africa 194 3.5.2. The Damaraland alkaline province, Namibia 198 3.5.3. Carbonatites 199 3.5.4. Kimberlites...Plumes 6.1 Introduction 6.2 Intracontinenta1layered igneous intrusions 6.3 Anorogenic prograde metamorphism...metamorphism in the Central Zone ofthe Damara Orogen, Namibia 6.3.2. Anorogenic metamorphism in the eastern Pyrenees...layered igneous complexes 8.2.1. The Great Dyke, Zimbabwe 8.2.2. The Bushveld lgneous Complex, South Africa |  | | Book (edition) | | subcrustal materials. E. Wm. Heinrich vi Preface No igneous rocks have so fascinated petrologists as those...blessing of carbonatites. These “limestones of igneous origin” are the subject of this monograph. Although...relationships of carbonatites to subsilicic alkalic igneous rocks point to the necessity of considering the...new field of igneous petrology, that of the nature and origin of non- or nil-silicate igneous rocks. Most...Most of the features that characterize silicate igneous rocks also are represented in carbonatites. Thus |  | Pirajno, Franco, González-Álvarez, Ignacio, Chen, Wei, Kyser, Kurt T., Simonetti, Antonio, Leduc, Evelyne, leGras, Monica (2014) The Gifford Creek Ferrocarbonatite Complex, Gascoyne Province, Western Australia: Associated fenitic alteration and a putative link with the ~1075Ma Warakurna LIP. Lithos, 202. 100-119 doi:10.1016/j.lithos.2014.05.012 | Journal (article/letter/editorial) | | The gifford creek ferrocarbonatite complex, province, western australia: Associated fenitic...leGrass, Monica, The gifford creek ferrocarbonatite complex, province, western australia: Associated fenitic...MANUSCRIPT THE GIFFORD CREEK FERROCARBONATITE COMPLEX, T PROVINCE, WESTERN AUSTRALIA: ASSOCIATED RI... Abstract The Gifford Creek Ferrocarbonatite Complex (GFC), located in the NeoarcheanPaleoproteroic...Metamorphics. The ferrocarbonatites are associated with complex and irregularly distributed zones of fenitic alteration |  | | Journal (issue) | | solvsbergite, trachyte, microfoyaite, phonolite and nephelinite. (Garson 1965&, p. 12) (Text-fig. 1.) The province...plugs and dykes of nepheline syenite, trachyte, nephelinite, solvsbergite and Campbell Smith, 1958) and a...fenites and associated country rocks of the Alno Complex in the system Data taken from von Eckermann (1948...fenitized basalt; FG fenitized gabbro: from Messum Complex (Mathias, 1956). Tie lines join plots of Kangankunde...feldspathic breccias from the Tundulu Fig. ii. ± Complex (Garson, 1962, p. 79). These chemical changes |  | | Report (issue) | | GEOLOGICAL SURVEY OF K E N Y A GEOLOGY OF THE GWASI AREA DEGREE SHEET 41, SOUTH-WEST QUARTER AND PART OF...Wageningen, The Netherlands GEOLOGY OF THE GWASI AREA DEGREE SHEET 4J, SOUTH-WEST QUARTER AND PART OF... FOREWORD The publication of the report on the Gwasi area completes the primary geological survey of South...south-western corner of Kenya. It is a most important area as in its northern part there is a number of carbonatite...containing the metal columbium. Various alkaline igneous rocks are found at the centres, and the mapping |  | | Book | | springer.com To my wife Foreword The Earth is a complex and dynamic system that over 4.5 billion years...papers and 19 geological maps in Western Australia, Namibia and Greenland. Throughout his career, which has...(GSWA) typed most of the tables, especially the complex ones. Jean Johnston and Chris Hocking performed.... . . . . . . . . . . . . . 1.4.8 The Role of Complex Ions and Ligands in Hydrothermal Fluids . . . .... . . . . . . . . . . . . . . . . . . . 1.4.9 Complex Ions in Hydrothermal Solutions . . . . . . . . |  | | Book | | nnn*"» \ii-A A " 2 :n xv sVr.v-* '•.L-f*1 Igneous Petrology Digitized by the Internet Archive in...https://archive.org/details/igneouspetrologyOOOOhall IGNEOUS PETROLOGY Anthony Hall ► P ► Longman mmm Scientific...Publication Data Hall, Anthony, 1938— Igneous petrology. 1. Rock, Igneous I. Title 552'.1 QE461 ISBN D-SflE-3D17M-E...Anthony, 1938— Igneous petrology. Bibliography: p. Includes index. 1. Rocks, Igneous. I. Title QE461... CONTENTS Preface vi A ckno wledgements vii 1 Igneous activity at the present day 2 Volcanism 24 |  | Bardintzeff, Jacques-Marie, Liégeois, Jean-Paul, Bonin, Bernard, Bellon, Hervé, Rasamimanana, Georges (2010) Madagascar volcanic provinces linked to the Gondwana break-up: Geochemical and isotopic evidences for contrasting mantle sources. Gondwana Research, 18 (2) 295-314 doi:10.1016/j.gr.2009.11.010 | Journal (article/letter/editorial) | | coasts. One of them, the Antampombato–Ambatovy Complex has been studied in detail by Melluso et al. (2005)...magma outpouring of flood basalts. The Turonian igneous event was also active along the eastern coast of...correlated with higher LOI (2.93 wt.%). Likely igneous ages are in the same range as those obtained by...Ankaratra province occupies the Central Madagascar region. 6 whole-rock K–Ar age determinations (Table 1)...Madagascar: the southernmost region (Dostal et al., 1992), the northern region (Melluso et al., 1997), and |  | | Book | | VULCANICITY AND CONTINENTAL EVOLUTION IN THE BARBERTON REGION, TRANSVAAL 27 M. J. Viljoen and R. P. Viljoen...157 O. Von Knorring LATE PALAEOZOIC TO RECENT IGNEOUS ACTIVITY IN WEST AFRICA AND ITS RELATIONSHIP TO...papers deal with the composition of African acidic igneous rocks, the structural environments of kimberlites...Schists. Their initial attempt to interpret the complex structures of the Morar anticline was followed...petrologists were attributing the diversity of igneous rocks to differentiation from a single parent magma |
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