| | 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 | | 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...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 | | | Catalog/List | is native to the warm seas of the Indo-Pacific region and known traditionally to the Pacific Islanders...Kop Daglari, Erzurum Province, Eastern Anatolia Region, Turkey It is truly unfortunate that fine Kammererite...online, visit HA.com/6042 49022 AMETHYST Las Vigas Region, Veracruz, Mexico The mountainous interior of the...SMOKY) Goboboseb Mountains, Brandberg area, Brandberg District, Erongo Region, Namibia The Goboboseb locality...WATER BUBBLES Goboboseb Mountains, Brandberg area, Brandberg District, Erongo Region, Namibia The drive to | | | Journal (issue) | 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...Feldspar Minor Olivine Scapolite Pyroxinc Augite Labradorite TES TES Bronzite TES. THEMIS VIS and NlR spectra...instrument has also detected olivine in the Nili Fossae region of Mars. More recently, the Spirit Mossbauer spectrometer...size, but Transylvania was a dominant gold mining region a century or two ago. It was nice to see the needle | | | Catalog/List | is native to the warm seas of the Indo-Pacific region and known traditionally to the Pacific Islanders...in this fine specimen, relatively large for the region. The undulating interior of the geode is lined...fluorescent collector and doctor from the Philadelphia area, and retains the Jehle label on the cut and matt...fluorescent material ever produced in the Franklin area. While the present specimen displays “only” 3 fluorescent...the top of Miller Peak in the rugged Huachuca Mountains of Cochise Co, Arizona is the second best locality | | | Catalog/List | world-class Manganite from Ilfeld in the Harz Mountains of Germany, with crystals up to 1.88 inches (4...1 Mine, Inca de Oro, Chañaral Province, Atacama Region, Chile Terry Szenics has been a tireless digger...Kavalerovo Mining District, Primorskiy Kray, Far-Eastern Region, Russia It is often said that simplicity is the...Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco The sere desert of the Bou Azer mining...Dry Gill Mine, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK When Mimetite | | | Book | Republic, 6 cm). Figure 1.2 Halite crystals (Namibia, 5.8 cm). 6 section devoted to the display of...in groups 8–12, show marked deviation. In this region of the Periodic Table, electronegativity increases...bonded substances, the electrons are confined to the region between the nuclei of the bonded atoms and they...Fluorite showing stepped, cubic crystal faces (Erongo, Namibia, 5.8 cm). hence occurs less commonly. Figure...(left, 6 cm) and grossular garnet (both from Kayes region, Mali); (C) grossular (Jeffrey mine, Canada, 5 | | Sarmento, Carla Cecília Treib, Sommer, Carlos Augusto, Lima, Evandro Fernandes, Barreto, Carla Joana Santos, Rossetti, Lucas, Lafon, Jean Michel (2021) Mafic subvolcanic intrusions from the southern
Paraná‐Etendeka
Large Igneous Province, Brazil: Insights from geochemistry and
Sr–Nd–Pb
isotopes. Geological Journal, 56 (2). 1143-1166 doi:10.1002/gj.3993 | Journal (article/letter/editorial) | et al., 2014, 2018; Val- also occur in western Namibia including the Henties Bay-Outjo ente et al., 2007;...basic with gramado lavas in the southeast outcrop area (Peate, intrusions and its correlation with the...fields formed of multiple from the central-eastern region of Rio Grande do Sul State; (b) to lobes of basalt...relationship the most primitive compositions in the area (>5 wt% MgO), and by between dikes of the Paraná...stratigraphy (Torres and Vale do in western Africa, in Namibia and Angola (Jerram et al., 2019; Sol formations) | | Bennio, L., Brotzu, P., D'Antonio, M., Feraud, G., Gomes, C.B., Marzoli, A., Melluso, L., Morbidelli, L., Morra, V., Rapaille, C., Ruberti, E. (2003) The tholeiitic dyke swarm of the Arraial do Cabo peninsula (SE Brazil): 39Ar/40Ar ages, petrogenesis, and regional significance. Journal of South American Earth Sciences, 16 (2) 163-176 doi:10.1016/s0895-9811(03)00030-0 | Journal (article/letter/editorial) | present-day southern Brazil, Uruguay, Argentina, Namibia, and Angola were flooded by a broadly bimodal tholeiitic...1998; Thompson et al., 1998) have been found in the area of the Santos– Rio Early Cretaceous dyke swarm....al., 1986) for the dykes of the Arraial do Cabo area. Group a dykes ¼ squares, and Group b dykes ¼ circles...Mesozoic Santos–Rio dyke swarm (MR19 and IT151, in the area of the Morro Redondo and Itatiaia alkaline massifs;...is similar to or higher than those of typical labradorite or bytownite. The 37 Ar/39Ar ratio spectra indicate | | | 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 | | Zhang, Yi-Shen, Hou, Tong, Veksler, Ilya V., Lesher, Charles E., Namur, Olivier (2018) Phase equilibria and geochemical constraints on the petrogenesis of high-Ti picrite from the Paleogene East Greenland flood basalt province. Lithos, 300. 20-32 doi:10.1016/j.lithos.2017.11.011 | Journal (article/letter/editorial) | 1), emplaced atop pre-Cretaceous rocks over an area of about 65000 km2 (Pedersen et al., 1997): they...of Paleogene flood basalts in the North Atlantic region. Previous studies have shown that North Atlantic...of tholeiitic flood basalts occurs in the inland region of MA Prinsen af Wales Bjerge (Hansen et al....diagram (Fig. 4d). Plagioclase produced at 1 atm (labradorite) has a ACCEPTED MANUSCRIPT higher An content...R., 1987. The Karoo igneous province — A problem area for inferring tectonic setting D from basalt geochemistry | | | Journal (issue) | 11 DTCsightholder manufacturing facilities in Namibia. However, these are supplied from all DTC sources...of cutting factories throughout South Africa, Namibia, and Botswana, such as this facility in South Africa...Colombian emeralds—as production from other mines in the area slowed (Weldon, 2006). Brazil witnessed a sustained...with the opening of a new mine in the Nova Era region and technological developments at established mines...figure 11) and pink, have been mined in the Merelani area, though production remains sufficiently rare for | | Choudhary, Babita R., Ernst, Richard E., Xu, Yi-Gang, Evans, David A.D., de Kock, Michiel O., Meert, Joseph G., Ruiz, Amarildo S., Lima, Gabrielle A. (2019) Geochemical characterization of a reconstructed 1110 Ma Large Igneous Province. Precambrian Research, 332. 105382 doi:10.1016/j.precamres.2019.105382 | Journal (article/letter/editorial) | Moabi et al., 2017), and also in the MidContinent region of North America (Keweenawan LIP) (Heaman et al...dated NW-NNW trending Epembe dykes of northern Namibia as a single Huila-Epembe swarm, as well as an approximately...Huanchaca Suite intrude the Aguapeí Group in a region not 7 affected by the deformation and metamorphism...ultramafic, and alkaline intrusions in the Lake Nipigon region at 1115–1110 Ma was followed by a major pulse of...Grunehogna terrane of Antarctica also contains a region in Dronning Maud Land with 1110 Ma LIP magmatism | | Alizadeh, Elahe, Ghadami, Gholamreza, Esmaeily, Dariush, Ma, Changqian, Lentz, David R, Omrani, Jafar, Golmohammadi, Abbas (2018) Origin of 1.8 Ga zircons in Post Eocene mafic dikes in the Roshtkhar area, NE Iran. International Geology Review, 60 (15) 1855-1882 doi:10.1080/00206814.2017.1396259 | Journal (article/letter/editorial) | zircons in Post Eocene mafic dikes in the Roshtkhar area, NE Iran Elahe Alizadeh, Gholamreza Ghadami, Dariush...zircons in Post Eocene mafic dikes in the Roshtkhar area, NE Iran, International Geology Review, DOI: 10...zircons in Post Eocene mafic dikes in the Roshtkhar area, NE Iran Elahe Alizadeha, Gholamreza Ghadamia, Dariush... Iran ABSTRACT ARTICLE HISTORY The Roshtkhar area is located in the Khaf-Kashmar-Bardaskan volcano-plutonic...subvolcanic rocks occurring mainly as dikes in the area, which intruded into Cenozoic intrusive rocks. We | | Ngonge, Emmanuel Donald, de Hollanda, Maria Helena Bezerra Maia, Archanjo, Carlos José, de Oliveira, Diógenes Custódio, Vasconcelos, Paulo Marcosde Paula, Muñoz, Patrício Rodrigo Montecinos (2016) Petrology of continental tholeiitic magmas forming a 350-km-long Mesozoic dyke swarm in NE Brazil: Constraints of geochemical and isotopic data. Lithos, 258. 228-252 doi:10.1016/j.lithos.2016.04.008 | Journal (article/letter/editorial) | NU emplaced as linear sets of dykes covering an area of approximately 12,500 km2 (Fig.1) marking the...processes led to the break-up of this major continental area, especially from the Early Jurassic to the Late...tholeiites which are typically confined to the western region. ED On the basis of the dataset presented in...SC RI (An) compositions in plagioclase are labradorite to andesine (An62-46) in normally zoned phenocrysts...Anorthite compositions in plagioclase are PT labradorite to oligoclase (An62-29), although albite (An3 | | | Journal (article/letter/editorial) | The Bunbury Basalt, although only covering a small area in the Cape Naturaliste–Cape Leeuwin Peninsula,...discoveries in the West Musgrave and in the Kimberley region, the LIPs in these regions have good mineral potential...2–54 2.4. 1.8–1.7 Ga Hart-Carson LIP, Kimberley region . . . . . . . . . . . . . . . . 2.4.1. Carson Volcanics...the Central Atlantic Magmatic Province (estimated area of ca. 7 × 106 km2), the Ontong Java oceanic plateau...Australia; those discussed in this paper are underlined. Region or tectonic unit Event number in Table 1 of Ernst | | | Catalog/List | They are the Directors of this new and exciting area, having served as consultants in this arena for...49002 CITRINE GEODE PAIR Rio Grande do Sul, South Region, Brazil Citrine is one of the more desirable forms...CALCITE SPECIMENS Sterling Hill Mine and Franklin area, Sussex Co., New Jersey Willemite and Calcite are...Willemite is an abundant ore mineral in the Franklin area mines, sizable Willemite crystals are extremely...close to the Arctic Circle, but the most productive area has been Greenland. It was first found there in | | | Book | conference proceedings. It covers the entire research area of geology including, but not limited to, economic...atm fO2 . Proterozoic mafic dykes from the Bomdila area, NE Lesser Himalaya, India, have been studied for...Significance of the Proterozoic Mafic Dykes from the Bomdila Area, NE Lesser Himalaya, India”). Geochemistry of these...Significance of the Proterozoic Mafic Dykes from the Bomdila Area, NE Lesser Himalaya, India . . . . . . . . . . ...are usually thought to be emplaced from a focal region above a mantle plume (e.g., Halls 1982; Ernst and | | | Report (issue) | authors also consider the mineral deposits of the region, indicating their spatial and temporal association...quite clearly that southern México is a complex region with a stratigraphic record that begins in the...Middle America and the Gulf of Mexico-Caribbean Sea region during Mesozoic time: Geological Society of America...carpet of the Sierra Madre Occidental covers an area of ~300,000 km2 (McDowell and Keizer, 1977; McDowell...W E Boundary between area with east or west tilting of rocks Limit of area affected by Tertiary extension |
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