 | | Journal (article/letter/editorial) | | Composition of Strongly Alkalic Basaltic Rocks from the Cape Verde Islands Jean Klerkx Laboratoire de G6ologie,...Gent Received January 16, 1974 Abstract. The Cape Verde islands are characterized by the presence of...fraction of undepleted mantle peridotite, containing phlogopite; the deeper part of the mantle where this nephelinitic...Bonatti and Fisher, 1971; Middiemost, 1973). The Cape Verde archipelago is a typical example of this type...alkaline lavas and associated plutonie rocks of the Cape Verde Islands in order to t r y to elucidate the genesis |  | Doucelance, Régis, Escrig, Stéphane, Moreira, Manuel, Gariépy, Clément, Kurz, Mark D. (2003) Pb-Sr-He isotope and trace element geochemistry of the Cape Verde Archipelago. Geochimica et Cosmochimica Acta, 67 (19) 3717-3733 doi:10.1016/s0016-7037(03)00161-3 | Journal (article/letter/editorial) | | isotope and trace element geochemistry of the Cape Verde Archipelago RÉGIS DOUCELANCE,1,2,* STÉPHANE...concentrations, have been determined for basalts from the Cape Verde archipelago (Central Atlantic). Isotopic and...isotopically distinct components in the source of the Cape Verde basalts: (1) recycled ⬃1.6-Ga oceanic crust (high...delamination and subsequent incorporation into the Cape Verde plume, or may be remnant from delamination just... The first detailed geochemical study of the Cape Verde was that of Gerlach et al. (1988) who determined |  | Martins, Sofia, Mata, João, Munhá, José, Mendes, Maria Hermínia, Maerschalk, Claude, Caldeira, Rita, Mattielli, Nadine (2010) Chemical and mineralogical evidence of the occurrence of mantle metasomatism by carbonate-rich melts in an oceanic environment (Santiago Island, Cape Verde) Mineralogy and Petrology, 99 (1) 43-65 doi:10.1007/s00710-009-0078-x | Journal (article/letter/editorial) | | melts in an oceanic environment (Santiago Island, Cape Verde) Sofia Martins & João Mata & José Munhá & Maria...consistent with the occurrence of amphibole + phlogopite in associated metasomatised lherzolite xenoliths...overall isotopic characteristics of the southern Cape Verde Islands. The overall geochemical characteristics...also been shown, for example by a study of the Cape Verde archipelago that the contribution of crustal...isotopic (Sr, Nd and Pb) heterogeneities of the Cape Verde archipelago lavas are usually interpreted as |  | Coltorti, Massimo, Beccaluva, Luigi, Bonadiman, Costanza, Salvini, Leonardo, Siena, Franca (2000) Glasses in mantle xenoliths as geochemical indicators of metasomatic agents. Earth and Planetary Science Letters, 183 (1) 303-320 doi:10.1016/s0012-821x(00)00274-0 | Journal (article/letter/editorial) | | metasomatizing agents. Xenoliths bearing amphibole and/or phlogopite, which can strongly affect the glass chemistry...in mantle xenoliths from Mt. Lessini, Hawaii, Cape Verde and Yitong have been related to metasomatism...and Hawaii glasses as compared with those of Cape Verde and Yitong allow a sodic signature to be attributed...volatile-bearing minerals, such as amphibole and phlogopite, has to be invoked. This, in turn, has to be...Lessini Mt., Veneto Volcanic Province, Italy and Cape Verde, Atlantic Ocean) and from the recent literature |  | | Journal (article/letter/editorial) | | Carbonatites are known in the oceanic islands of the Cape Verde and Canary archipelagos near the continental...have been known for some time on islands of the Cape Verde (Bebiano, 1932) and Canary archipelagos (Assuncão...are either near the continental shelf margin (Cape Verde Islands are 250 km west of Africa ) or straddle...suspected to be carbonatites were studied in the Cape Verde Archipelago at Maio Island (Stillman et al.,...isotopes for samples from Brava Island in the Cape Verde Islands and Fuerteventura Island in the Canary |  | | Journal (article/letter/editorial) | | mantle sources to magmatism on Santiago, southern Cape Verde archipelago Abigail K. Barker • Paul M. Holm...history of volcanism at Santiago, in the southern Cape Verde islands. Pb isotope data confirm the positive...north–south compositional heterogeneity in the Cape Verde archipelago has persisted for at least 4.6 Ma...hotspots, (e.g. Iceland, Hawaii, Galapagos and Cape Verde), show isotopic evidence for spatial mantle heterogeneity...submerged lavas. However, in the case of the Cape Verde archipelago (Fig. 1), the African plate has remained |  | Gerlach, David C, Cliff, Robert A, Davies, Gareth R, Norry, Michael, Hodgson, Neal (1988) Magma sources of the Cape Verdes archipelago: Isotopic and trace element constraints. Geochimica et Cosmochimica Acta, 52 (12) 2979-2992 doi:10.1016/0016-7037(88)90162-7 | Journal (article/letter/editorial) | | KM-7037/88/53.00 + .OO Magma sources of the Cape Verdes archipelago: Isotopic and trace element constraints...Late Terfary to Recent m&c alkahne rocks of the Cape Verdesarcbipeiago vary from i4~d~~~Nd = 0.5 12606-0...1. The variation of M7Pb/zodpb with to6Pb/mPb in Cape Verdes Iavas coincides with data for MORB, Hawaii...e., %Pb is ltigber in samples from the southern Cape Verdes islands which have lower ro6Pb/wPb. At least...including depleted upper mantle, are required in Cape Verdes magna sources. Samples from the southern |  | | Journal (article/letter/editorial) | | primitive ocean island volcanics from São Vicente, Cape Verde Islands Jesper Øksne Jørgensen *, Paul Martin...Holm / Chemical Geology 192 (2002) 249–267 the Cape Verde Islands (Gerlach et al., 1988; Kogarko, 1993)...isotopic composition of basaltic rocks from the Cape Verde Islands varies in a somewhat systematic way which...Hart, 1986). The isotopic compositions of the Cape Verde Islands carbonatites, on the other hand, are...presence of a plume. The inferred plume beneath the Cape Verde Islands is considered by Sleep (1990) to be a |  | | Journal (article/letter/editorial) | | hosts numerous volcanotectonic rises (Madeira, Cape Verde, Canaries, Sierra Leone, etc.) and is a segment...S2303 9°08.4′ 21°26.4′ N 16° 21°20.4′ 21°14.4′ Cape Ve r d e Rise 14° Gambia Basin AFRICA 2 4 21...22 CAP E VE RDE 10° 24 RID GE GRIMA LDI 1 Cape Verde Basin 8° B 6° 25° SEAMO UNTS G Pl uin at...Grimaldi Seamounts, is structurally linked to the Cape Verde Ridge (Skolot nev et al., 2009), which is part...established in the north, directly south of the Cape Verde Islands (Hayes and Rabinow itz, 1975) (Fig. |  | | Journal (article/letter/editorial) | | 11 wt.%) are reported from dark reddish-brown phlogopite-biotite rims around paler pblogopite cores in...observed. The phenocryst cores may be classified as phlogopite on the basis of Mg/Fe = <2 (Deer et al., 1963)...transitional between phlogopite and biotite. The phenocrysts show strong zoning from phlogopite cores to J... J. c. GREENWOOD phlogopite-biotite rims that are exceptionally rich in Ba (up to 7.11 wt.%) and Ti (up...Representative analyses are given in Table 1. The phlogopite cores (122 analyses) show only limited chemical |  | | Report (chapter) | | and Pb-Sr-Nd isotope study of the Azores and Cape Verde hot-spots: the geodynamic implications G. R....b - S r - N d isotope study of the Azores and Cape Verde hot-spots: the geodynamic implications G. R....Cliff SUMMARY: The mafic lavas of the Azores and Cape Verde Islands are of a highly varied composition, reflecting...variety of source compositions. The lavas of the Cape Verde Islands are characteristically highly silica...majority of the lavas from the Azores and northern Cape Verdes Islands have isotope and trace-element systematics |  | | Journal (article/letter/editorial) | | Article Unravelling the Crustal Architecture of Cape Verde from the Seamount Xenolith Record Abigail K....February 2019 Abstract: The Cape Verde oceanic plateau hosts 10 islands and 11 seamounts...model for the crustal architecture beneath the Cape Verde oceanic plateau. The host lavas are phononephelinites...crust and overlying sediments located beneath the Cape Verde oceanic plateau. Keywords: alkaline volcanics;...magma-crust interaction 1. Introduction The Cape Verde archipelago is a collection of exposed islands |  | | Journal (article/letter/editorial) | | and associated nephelinites from São Vicente, Cape Verde Islands C. DE IGNACIO*, M. MUÑOZ AND J. SAGREDO...the most abundant carbonatite outcrops in the Cape Verde Islands. A field survey of the main outcrops has...carbonatites, extrusive, intrusive, nephelinites, Cape Verde Islands. Introduction CARBONATITES have been...from two islands in the northern part of the Cape Verde archipelago, São Vicente (Gerlach et al., 1988)...several works dealing with the origin of the Cape Verde archipelago (e.g. Holm et al.. 2008), and many |  | | Journal (article/letter/editorial) | | and in the dykes at Seladinha in San Vicente, Cape Verde Islands, described below. This process may also...and for fenites from Seladhina, San Vicente, Cape Verde Island (filled squares). The Ruri feldspars initially...the canadian mineralogist Fenites on Brava, Cape Verde Islands On the barren hillsides of Minhoto on...transport these elements. Fenites on San Vicente, Cape Verde Islands On the hillside north of the road at...northern Pakistan and in the ijolites (ij) at Brava, Cape Verde Islands. fenites associated with carbonatites |  | | Journal (article/letter/editorial) | | carbonatite formed by partial melting of carbonated phlogopite lherzolite at 30 kbar. Dalton and Wood (1993)...alkali-bearing silicates (usually amphibole and/or phlogopite) during upwards transport of xenoliths following...any K-bearing phase (metasomatic amphibole or phlogopite?) as no relict phases have been identified. ...(1993, 1994) in assuming that the absence of phlogopite and amphibole in the metasomatic phase assemblage...5% MgO, have also been found on San-Vincente, Cape Verde Islands (Ryabchikov et al. 1989), where carbonatite |  | | Journal (article/letter/editorial) | | contains widely spread tectonomagmatic rises (Cape Verde, Madeira, and the Canary islands; the Sierra...closest well studied volcanic province is the Cape Verde islands [6]. The Bathymetrists Seamounts extend...26° 24° 22° 20° 18° W m 0 18° N 16° –1000 Cape Verde Islands 14° –2000 –3000 Africa 12° –4000...of group B1. The majority of volcanics of the Cape Verde Islands differ from this differentiated series...patterns were observed for the volcanic rocks of the Cape Verde Islands (Maio, Sal, Santiago, 246 PEYVE, SKOLOTNEV |  | | Journal (article/letter/editorial) | | lherzolite the most abundant rock type, but amphibole, phlogopite and garnet are also recorded. The lack of such...Africa Catanda, Angola Santiago, Cape Verde Islands Brava, Cape Verde Islands Mont Auber de la Rüe, Kerguelen...adjacent to them. Carbonatites are found in the Cape Verdes, Canary Islands and 5 Kerguelen, but these...fragments of olivine (FoN92), Cr-diopside and phlogopite Rare Cr-diopside and Cr-spinel grains Xenoliths...lherzolite xenoliths Xenoliths of clinopyroxenite with phlogopite and minor apatite, Ti-magnetite and titanite |  | Kaczmarek, M.-A., Bodinier, J.-L., Bosch, D., Tommasi, A., Dautria, J.-M., Kechid, S. A. (2016) Metasomatized Mantle Xenoliths as a Record of the Lithospheric Mantle Evolution of the Northern Edge of the Ahaggar Swell, In Teria (Algeria) Journal of Petrology, 57 (2) 345-382 doi:10.1093/petrology/egw009 | Journal (article/letter/editorial) | | garnet and spinel peridotites, pyroxenite and phlogopite megacrysts. The spinel and garnet peridotites...1) is characterized by the crystallization of phlogopite in the garnet and spinel peridotites, amphibole...In Teria peridotite and pyroxenite xenoliths, phlogopite megacrysts, and their host melilitite. Microstructural...1 m in size, as well as lapilli, olivine and phlogopite megacrysts, and various mantle and crustal xenoliths...containing pyroxenite and mafic granulite xenoliths, phlogopite megacrysts, phlogopitite xenoliths, spinel peridotite |  | Simon, Nina S. C., Neumann, Else-Ragnhild, Bonadiman, Costanza, Coltorti, Massimo, Delpech, Guillaume, Grégoire, Michel, Widom, Elisabeth (2008) Ultra-refractory Domains in the Oceanic Mantle Lithosphere Sampled as Mantle Xenoliths at Ocean Islands. Journal of Petrology, 49 (6) 1223-1251 doi:10.1093/petrology/egn023 | Journal (article/letter/editorial) | | fertile and contain primary clinopyroxene, and the Cape Verde suite, which contains both ultra-refractory and...(Munha et al., 1990), the Azores (Johansen, 1996), Cape Verde (Ryabchikov et al., 1995; Bonadiman et al., 2005;...melt and peridotite. (f) Spinel lherzolite from Cape Verde showing sieve-textured opx. JOURNAL OF PETROLOGY...La Palma and Tenerife, carry trace amounts of phlogopite. No primary clinopyroxene porphyroblasts (cpx1)...protogranular texture in spinel harzburgite (Cape Verde; crossed polars). (c) Opx porphyroclasts with |  | Hoernle, Kaj, Tilton, George, Le Bas, Mike J., Duggen, Svend, Garbe-Schönberg, Dieter (2002) Geochemistry of oceanic carbonatites compared with continental carbonatites: mantle recycling of oceanic crustal carbonate. Contributions to Mineralogy and Petrology, 142 (5) 520-542 doi:10.1007/s004100100308 | Journal (article/letter/editorial) | | compositions are presented for carbonatites from the Cape Verde (Brava, Fogo, Sáo Tiago, Maio and Sáo Vicente)...compositions similar to HIMU-type ocean island basalts. Cape Verde carbonatites, however, have more radiogenic Pb...to reflect secondary processes. Compared with Cape Verde calcio-carbonatites, the less radiogenic Nd and...in silicate volcanic rocks from the Canary and Cape Verde Islands) cannot be explained through secondary...secondary processes or through the assimilation of Cape Verde crust. These isotopic characteristics require |  | | Journal (article/letter/editorial) | | Printed in Austria Glass-bearing xenoliths from Cape Verde: evidence for a hot rising mantle jet I. D. Ryabchikov...xenoliths from melanephelinites of Sal Island, Cape Verde Archipelago, have a compositional range from...Zusammenfassung Glasfiihrende Xenolithe yon Kap Verde: Evidenz fiir einen heiJ3en Erdmantel Diapir Die...ultramafischen Xenolithe aus den Melanepheliniten vonder Kap Verde Insel Sal sind Spinell-Lherzolithe und Spinell-Harzburgite...interstitial glasses of mantle xenoliths collected at Cape Verde Islands, their relations with associated microphenocrysts |  | | Journal (article/letter/editorial) | | ultrapotassic magmas were described at Maio Island, Cape Verde Archipelago, and Sáo Tomé Island [10, 11]. Previously...concentrating K (first of all, leucite) have shown that phlogopite and amphibole appear in these compositions at...crystallization of clinopyroxene, amphibole, phlogopite, and magnetite. When leucite-bearing nephelinite...liquidus phases are clinopyroxene, K-richterite, and phlogopite [21]. During the melting of K-rich lamproites...temperature of 800°ë the crystallisation of olivine, phlogopite, orthopyroxene, apatite, and carbonate is proceeding |  | | Journal (article/letter/editorial) | | Netherlands [2] On dating the magmatism of Maio, Cape Verde Islands J.G. Mitchell 1, M.J. Le Bas 2, j. Zielonka...Tertiary plutonic and volcanic rocks from Maio, Cape Verde Islands, have been determined to elucidate the...a stratovolcano at 7 Ma. 1. Introduction The Cape Verde Islands, situated 500 km west of the Senegal...km across, beneath 2 km of water) known as the Cape Verde Rise. Stillman et al. [1] and de Paepe et al...phase recognised of ocean-island volcanism in the Cape Verde archipelago outcrops on Maio within the Coruja |  | Yavuz, Fuat, Gültekin, Ali Haydar, Örgün, Yüksel, Çelik, Nurgül, Karakaya, Muazzez Çelik, Sasmaz, Ahmet (2002) Mineral chemistry of barium- and titanium-bearing biotites in calc-alkaline volcanic rocks from the Mezitler area (Balikesir-Dursunbey), western Turkey. GEOCHEMICAL JOURNAL, 36 (6) 563-580 doi:10.2343/geochemj.36.563 | Journal (article/letter/editorial) | | E. = 0.40) is intermediate between annite and phlogopite. The biotite phenocrysts contain up to 1.72 wt...mantle environment. Tracy, 1991). Barium-rich phlogopite and biotite are commonly associated with high...vary with temperature, I NTRODUCTION Barian phlogopite and biotite occur most commonly in magmatic and...K2 O Cl Total Talc Ti-phlogopite Ferri-eastonite Muscovite Eastonite Phlogopite Ba and Ti bearing biotites...K2 O Cl Total Talc Ti-phlogopite Ferri-eastonite Muscovite Eastonite Phlogopite Note: T, M, I, and A |  | Lu, Jianggu, Zheng, Jianping, Griffin, William L., O'Reilly, Suzanne Y., Pearson, Norman J. (2015) Microscale effects of melt infiltration into the lithospheric mantle: Peridotite xenoliths from Xilong, South China. Lithos, 232. 111-123 doi:10.1016/j.lithos.2015.06.013 | Journal (article/letter/editorial) | | origin as low-degree partial melts of pre-existing phlogopite-bearing rocks. The K-rich melts also react with...melts. Pre-existing K2Obearing phases, especially phlogopite, are often invoked as a potential source for...nephelinite. Moreover, ultrapotassic magmas with phlogopite phenocrysts are also found in the South China...beneath the South China block, probably composed of phlogopite-bearing harzburgite (Li et al., 2014). Furthermore...in Anyuan, Jiangxi provinces (Fig. 1a), where phlogopite and amphibole are found not only as megacrysts |
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