Alexander U. Falster, William B. Simmons, Karen L. Webber, Andrew P. Boudreaux,
... October 23, 2018 Mineralogy and Geochemistry of the Erongo Sub-Volcanic Granite-Miarolitic-Pegmatite Complex, Erongo, Namibia Alexander U. Falster; Alexander U. Falster § MP2 ... Andrew P. Boudreaux; Mineralogy and Geochemistry of the Erongo Sub-Volcanic Granite-Miarolitic-Pegmatite Complex, Erongo, Namibia. The Canadian Mineralogist 2018;; 56 (4): 425– ... Search Abstract The early Cretaceous anorogenic, sub-volcanic Erongo Granite, Namibia, was emplaced into metasedimentary rocks of the Neoproterozoic to Cambrian Damaran Orogeny. The Erongo Granite contains pegmatitic miaroles containing abundant beryllium and ...
Tópico(s): Geochemistry and Geologic Mapping
2018 - Mineralogical Association of Canada | The Canadian Mineralogist
Frank Holzförster, Harald Stollhofen, Ian G. Stanistreet,
The dissected landscape of the Waterberg-Erongo area, central Namibia, exposes Karoo-equivalent strata deposited in basins that occur throughout sub-Saharan Africa. Although many are of economic interest, ... not well understood. This study of the Waterberg-Erongo area provides detailed lithostratigraphical data, which suggest sedimentation ... distribution of the Karoo strata in the Waterberg-Erongo area, perhaps the most continuous of any of ... these lineaments, such as those in the Waterberg-Erongo area, with localised enhanced subsidence greater than that ...
Tópico(s): Geological and Geophysical Studies
1999 - Elsevier BV | Journal of African Earth Sciences
Marcus Wigand, Axel K. Schmitt, Robert B. Trumbull, Igor M. Villa, Rolf Emmermann,
The Erongo subvolcanic center in Namibia is the largest composite, bimodal complex in the Mesozoic Etendeka igneous province of ... that emplacement of the various igneous units at Erongo took place within a time span equivalent to ... basalt activity in the Etendeka–Paraná province. The Erongo complex comprises a series of felsic volcanic and ... Pb zircon) respectively. The youngest felsic magmas at Erongo are the high-silica Ekuta rhyolite and compositionally equivalent Erongo granite. These units yielded U–Pb zircon ages ...
Tópico(s): Geology and Paleoclimatology Research
2003 - Elsevier BV | Journal of Volcanology and Geothermal Research
Jullieta Enone Lum, Fanus Viljoen, Bruce Cairncross, Dirk Frei,
The granite hosted pegmatites of the Erongo Volcanic Complex in central Namibia are well known for the wide variety of minerals present, of considerable interest to mineral collectors. These ... blue (aquamarine) variants. Comprehensive geochemical studies of the Erongo beryls are very limited. The present contribution serves ... blue, two green and one colorless beryl from Erongo, and to compare these with other localities worldwide. The beryls from Erongo are generally subhedral to euhedral with a well- ...
Tópico(s): Geochemistry and Geologic Mapping
2016 - Elsevier BV | Journal of African Earth Sciences
Hj. Bernhardt, J. Härtwig, Veronika Lerche,
The granite hosted pegmatites of the Erongo Volcanic Complex in central Namibia are well known for the wide variety of minerals present, of considerable interest to mineral collectors. These ... blue (aquamarine) variants.Comprehensive geochemical studies of the Erongo beryls are very limited. The present contribution serves ... blue, two green and one colorless beryl from Erongo, and to compare these with other localities worldwide.The beryls from Erongo are generally subhedral to euhedral with a well- ... and do not serve to distinguish beryls from Erongo.
Tópico(s): Geochemistry and Geologic Mapping
1992 - Elsevier BV | Progress in Crystal Growth and Characterization of Materials
Robert B. Trumbull, M.‐S. Krienitz, B. Gottesmann, Michael Wiedenbeck,
... basement and potential source rocks of the Cretaceous Erongo granite. This study traces the B-isotope variations in tourmalines from the basement, from the Erongo granite and from its hydrothermal stage. Tourmalines from ... 13‰, n = 2). Virtually all tourmaline in the Erongo granite occurs in distinctive tourmaline-quartz orbicules. This " ...
Tópico(s): Radioactive element chemistry and processing
2007 - Springer Science+Business Media | Contributions to Mineralogy and Petrology
Basanite intrusions from the Early Cretaceous Erongo complex, Namibia, have compositions consistent with near-primary mantle melts derived from a depth of at least 100 km. These rocks provide ... Initial Sr–Nd–Pb isotope ratios of the Erongo basanites and associated tephrites and phonotephrites (87Sr/86Sr = ... modern Tristan hotspot. The Tristan plume signature of Erongo basanite–tephrite intrusions is shared by at least ...
Tópico(s): earthquake and tectonic studies
2003 - Oxford University Press | Journal of Petrology
J. Desmond Clark, James Walton,
... discovered by Dr E. R. Scherz in the Erongo Mountains. These lie some 10 to 15 miles ... post-Karroo Age. The western face of the Erongo forms the edge of the plateau escarpment, and ... Abbé Henri Breuil when he was copying the Erongo rock paintings, but no study of the settlement ...
Tópico(s): Geotourism and Geoheritage Conservation
1962 - Cambridge University Press | Proceedings of the Prehistoric Society
Sylvanus Ameh Onjefu, Mpingana Laimi Iyambo, J. Abah, Sindila Mwiya,
... 40K in 20 granite samples obtained from the Erongo Mountain Belt and Usakos Dome of the Erongo region, Namibia. All the samples were analysed using ...
Tópico(s): Geophysical Methods and Applications
2021 - Taylor & Francis | Geomatics Natural Hazards and Risk
Guilhem Mauran, Matthieu Lebon, Océane Lapauze, Alma Nankela, Florent Détroit, Joséphine Lesur, Jean‐Jacques Bahain, David Pleurdeau,
... the discovery of several painted shelters within the Erongo Mountains (Namibia), no archaeological study of ochre assemblages ... at the rock art shelter of Leopard Cave (Erongo, Namibia), spanning ca. 5,700 to 2,100 ...
Tópico(s): Archaeology and ancient environmental studies
2020 - Springer Science+Business Media | African Archaeological Review
Guilhem Mauran, Matthieu Lebon, Florent Détroit, Benoît Caron, Alma Nankela, David Pleurdeau, Jean‐Jacques Bahain,
... rock paintings in the northwestern part of the Erongo (Namibia). It relies on extensive pXRF analyses of ... the pigments from rock painting sites in the Erongo Mountains. Furthermore, the study also confirmed the presence ...
Tópico(s): Archaeology and ancient environmental studies
2019 - Springer Nature | Archaeological and Anthropological Sciences
Peter Bowden, Judith A. Kinnaird, Michael Diehl, Franco Pirajno,
... Fort 1988). Major element concentrations for Brandberg and Erongo supported by chemical data from other Damaraland complexes ... Volcanic rocks and their granitic equivalents from the Erongo complex show petrological and geochemical criteria indicating substantial potash and boron metasomatism which has given the Erongo rocks a subalkaline potassic geochemical signature. Similar granite ...
Tópico(s): Geological Studies and Exploration
1990 - Wiley | Geological Journal
... component analysis aiming to detect minerals in the Erongo complex, Namibia. We evaluate independent component analysis (ICA) to detect and map alteration halos in Erongo Namibia using the Hyperion dataset. Detailed surveys and ... von Hyperion Daten zur Kartierung von Verwitterungszonen in Erongo, Namibia. Wir prasentieren ein verbessertes Verfahren fur die ... ICA) mit dem Ziel der Mineral-Erkennung im Erongo Komplex. Detail- Untersuchungen sind unter Verwendung von Hyperspektral- ...
Tópico(s): Geochemistry and Geologic Mapping
2010 - E. Schweizerbart | Photogrammetrie - Fernerkundung - Geoinformation
Guilhem Mauran, Benoît Caron, Florent Détroit, Alma Nankela, Jean‐Jacques Bahain, David Pleurdeau, Matthieu Lebon,
... the Later Stone Age site of Leopard Cave, Erongo Mountains - Namibia, were analysed by ICP-OES and ...
Tópico(s): Geochemistry and Geologic Mapping
2021 - Elsevier BV | Journal of Archaeological Science Reports
Jean‐Pascal Dumoulin, Matthieu Lebon, Ingrid Caffy, Guilhem Mauran, Alma Nankela, David Pleurdeau, Emmanuelle Delqué-Količ, C. Moreau, Marion Perron, Marc Sieudat, B Thellier, Lucile Beck,
... accretions collected in the open-air sites of Erongo Mountains in Namibia. The accretions were separated into ...
Tópico(s): Archaeology and Rock Art Studies
2020 - Cambridge University Press | Radiocarbon
David Pleurdeau, Emma Imalwa, Florent Détroit, Joséphine Lesur, Anzel Veldman, Jean‐Jacques Bahain, Eugène Marais,
... Later Stone Age (LSA) site of Leopard Cave (Erongo, Namibia), which contains confirmed caprine remains, from which ...
Tópico(s): Archaeology and ancient environmental studies
2012 - Public Library of Science | PLoS ONE
Ilmari Haapala, Stephen Frindt, J KANDARA,
... are found in the Gross Spitzkoppe, Klein Spitzkoppe, Erongo, Brandberg, Messum, Cape Cross, and Paresis complexes. The ... peraluminous granodiorites and tourmaline-bearing granites of the Erongo complex. Pre-Damara gneisses are the main source ...
Tópico(s): Geochemistry and Geologic Mapping
2007 - Elsevier BV | Lithos
Sylvanus Ameh Onjefu, N.N. Johannes, J. Abah, L.A. Onjefu, S. Mwiya,
... and evaluation of radiological hazards in Usakos marble, Erongo region, Namibia
Tópico(s): Graphite, nuclear technology, radiation studies
2022 - | Internatuinal Journal of Radiation Research
Martina Lensing-Burgdorf, A. Watenphul, Jochen Schlüter, Boriana Mihailova,
... morphologies from miarolitic cavities in pegmatites of the Erongo granite are analysed by Raman spectroscopy and in ...
Tópico(s): Crystal Structures and Properties
2017 - Elsevier BV | European Journal of Mineralogy
Stephanie Lohmeier, Bernd G. Lottermoser, Karl Strauß, Tim Adolffs, Sven Sindern, Daniela Gallhofer,
... several hundred-kilometer long placer district in the Erongo and S-Kunene regions in Namibia and are ...
Tópico(s): Geology and Paleoclimatology Research
2021 - Elsevier BV | Journal of African Earth Sciences
Raymond L. Njinga, Victor M. Tshivhase, Nnenesi A. Kgabi, Munyaradzi Zivuku,
... residing in Walvis Bay and Swakopmund towns in Erongo Region, Namibia. The concentrations of 226Ra, 232Th and ...
Tópico(s): Graphite, nuclear technology, radiation studies
2019 - | Journal of Environmental Science and Management
Sylvanus Ameh Onjefu, Nnenesi A. Kgabi, Simeon H. Taole, Owen P. L. Mtambo, Charles N. Grant, Johann M.R. Antoine,
... and indoor activities along the coastline of the Erongo region of Namibia. A closed ended questionnaire was ...
Tópico(s): Radioactive contamination and transfer
2016 - Scientific Research Publishing | Journal of Geoscience and Environment Protection
Maja Urosevic, Oliver Nebel, José Alberto Padrón‐Navarta, Daniela Rubatto,
... hydrothermal garnets (skarn) from two different localities in Erongo, Namibia.The in situ analyses are complemented by ... VSMOW = 5.67 ± 0.02‰).Magmatic garnet from Erongo, Namibia, is rich in Mn and Fe 2þ ... separates are heterogeneous in both crustal garnet from Erongo with a large spread ranging from À0.15 ...
Tópico(s): earthquake and tectonic studies
2018 - Elsevier BV | European Journal of Mineralogy
Louise Le Meillour, Séverine Zirah, Antoine Zazzo, Sophie Cersoy, Florent Détroit, Emma Imalwa, Matthieu Lebon, Alma Nankela, Olivier Tombret, David Pleurdeau, Joséphine Lesur,
... few Later Stone Age sites, including Leopard Cave (Erongo region, Namibia), which provided the oldest directly dated ...
Tópico(s): Forensic and Genetic Research
2020 - Nature Portfolio | Scientific Reports
... Karoo uplift. Fumarolic pipes in ignimbrites of the Erongo Volcano-Plutonic Complex in Namibia are discussed. This ...
Tópico(s): Geology and Paleoclimatology Research
2020 - Elsevier BV | Geoscience Frontiers
... uprising in the Topnaar Traditional Authority in the Erongo region of Namibia by young community activists who ...
Tópico(s): Land Rights and Reforms
2020 - Cambridge University Press | Africa
Josephine N. Henok, Benjamin I. Okeleye, Elizabeth I. Omodanisi, Seteno Karabo Obed Ntwampe, Yapo Guillaume Aboua,
... 2.5–97.5 percentiles) was detected in Erongo, Zambezi, Hardap, Kavango East, and a comparable trend ...
Tópico(s): Renal function and acid-base balance
2020 - Multidisciplinary Digital Publishing Institute | Proteomes
Sylvanus Ameh Onjefu, Fatima Shaningwa, Julien M. Lusilao, J. Abah, Euodia Hess, Habauka M. Kwaambwa,
This study determined the contamination levels of some heavy metals: Mn, Cr, Cu, Ni, Fe, As, and Al obtained from the delta basin of Omaruru River, using Inductively Coupled Plasma-Optical Emission Spectrophotometer (Optima 8000, Perkin Elmer). Chemical analysis showed that the sediments samples have metal concentrations ranging from 88 to 128mg/kg for Mn, 3973 to 4369mg/kg for Fe, 96 to 107mg/kg for Cr, 6 to 9mg/kg for Cu, 9 to 11mg/kg for Ni, 17 to 19mg/kg for As, and 11750 to 9002mg/kg for Al. ...
Tópico(s): Geochemistry and Geologic Mapping
2020 - Taylor & Francis | Environmental Pollutants and Bioavailability
Bijal Chudasama, Alok Porwal, Andy Wilde, Ignacio González-Álvarez, Malcolm Aranha, Umamahesh Akarapu, Martin Hirsch, Eduard Becker,
The Tertiary palaeodrainage system in the Namibian calcrete-uranium province is deeply buried under Cenozoic sediments (such as fluvial, alluvial and desert flash-flood terrace sediments, duricrusts and/or aeolian and fluvially reworked aeolian sands) and has no obvious surface expression, because of which, this province remains under-explored in spite of hosting the world's largest calcrete-uranium deposit at Langer Heinrich. This paper presents first-pass bedrock geology and bedrock topography ...
Tópico(s): Geological and Geochemical Analysis
2019 - Elsevier BV | Ore Geology Reviews
Claudio Natali, Luigi Beccaluva, Gianluca Bianchini, Franca Siena,
... in Brazil) and the Damara Belt (e.g., Erongo, Okurusu, Okenyenya and Paresis in Namibia), both of ...
Tópico(s): High-pressure geophysics and materials
2017 - Elsevier BV | Lithos