 | | 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 |  | de Groot, F. M. F., Figueiredo, M. O., Basto, M. J., Abbate, M., Petersen, H., Fuggle, J. C. (1992) 2p X-ray absorption of titanium in minerals. Physics and Chemistry of Minerals, 19 (3) 140-147 doi:10.1007/bf00202101 | Journal (article/letter/editorial) | | binary and ternary oxide minerals, like anatase, rutile, brookite (all 7701) and Dedicated to Prof. John...titanium octahedron is distorted, like e.g. for rutile, it is necessary to project the cubic symmetry...comparing the titanium 2p and oxygen 1s spectra of rutile to spectra published previously (de Groot et al...diffraction. Additionally the minerals from the Cape Verde Islands (Ti-Augite, Kaersutite and Melanite-Sch6rlomite)...Santiago Island, Cape Verde Fogo Island, Cape Verde North Santiago Isl, Cape Verde Ti02 Palache (1944)a |  | 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 |  | Millet, Marc-Alban, Dauphas, Nicolas, Greber, Nicolas D., Burton, Kevin W., Dale, Chris W., Debret, Baptiste, Macpherson, Colin G., Nowell, Geoffrey M., Williams, Helen M. (2016) Titanium stable isotope investigation of magmatic processes on the Earth and Moon. Earth and Planetary Science Letters, 449. 197-205 doi:10.1016/j.epsl.2016.05.039 | Journal (article/letter/editorial) | | 1974) were analysed as well as samples from the Cape Verde (São Nicolau island; Millet et al., 2008) and...Intraplate Columbia River Easter Hawaii Cape Verde Cape Verde Azores Azores Azores BCR-2 17678 BHVO-2...that rutile has low solubility in pure-H2 O fluids (Audetat and Keppler, 2005) and that the rutile–aqueous...(Brenan et al., 1994). However, the presence of rutile in fluid-related mineral veins of deep-subducted...magnitude of stable isotope fractionation between rutile and co-existing fluids. Nevertheless, the bonding |  | | Journal (article/letter/editorial) | | cutting through 21AD1992. f) Large mica with mostly rutile at its rim (white) and quartz both at the rim and...and inside (dark gray). In addition to rutile, some bright minerals visible in this view are barite and...and 21AD1992), magnetite (in 1AD2007 and 690SR), rutile (in 3AD2007 and 21AD1992) and Fe-rich carbonate...the occurrence of mica surrounded by quartz and rutile (Fig. 2f) which is not detected in other sövites... 10 μm length again in contact with quartz and rutile. Similarly, in 19AD1992 Fe–Mg-rich calciocarbonates |  | Candeias, Carla, Ávila, Paula Freire, Alves, Célia, Gama, Carla, Sequeira, Cristina, da Silva, Eduardo Ferreira, Rocha, Fernando (2021) Dust Characterization and Its Potential Impact during the 2014–2015 Fogo Volcano Eruption (Cape Verde) Minerals, 11 (11) 1275 doi:10.3390/min11111275 | Journal (article/letter/editorial) | | Impact during the 2014–2015 Fogo Volcano Eruption (Cape Verde) Carla Candeias 1, * , Paula Freire Ávila 2 ...Impact during the 2014–2015 Fogo Volcano Eruption (Cape Verde). Minerals 2021, 11, 1275. https://doi.org/10...Island) is the youngest and most active volcano of Cape Verde. The last eruption occurred in 2014–2015. Aiming...archipelago belonging to Macaronesia, along with Cape Verde. Sahara Desert particles transported by wind...can be deposited to distant locations, such as Cape Verde or even the American continent [3]. These particles |  | Madureira, Pedro, Mata, João, Mattielli, Nadine, Queiroz, Gabriela, Silva, Pedro (2011) Mantle source heterogeneity, magma generation and magmatic evolution at Terceira Island (Azores archipelago): Constraints from elemental and isotopic (Sr, Nd, Hf, and Pb) data. Lithos, 126 (3) 402-418 doi:10.1016/j.lithos.2011.07.002 | Journal (article/letter/editorial) | | Atlantic islands such as Madeira, Saint Helena, Cape Verde and Canary (e.g., Chaffey et al., 1989; Doucelance...the presence of residual phlogopite, ilmenite or rutile (Bodinier et al., 1996; LaTourrette et al., 1995;...increase (ilmenite or rutile) of the Ba/Nb ratio. However, residual ilmenite or rutile should be reflected...signature” in spinel-peridotite xenoliths from Sal, Cape Verde archipelago: relics of a subcontinental mantle...and Pb–Sr– Nd isotope study of the Azores and Cape Verde hot-spots: the geodynamic implications. In: Saunders |  | | 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 |  | | Journal (article/letter/editorial) | | province comprising the western African coast, the Cape Verde Islands, the Canary Archipelago, and the Cameroon...Is. 40° 40° 30° 30° Canary Is. 20° 20° Cape Verde Is. 10° 10° Types of primary melts Foidites...9 2007 20° 60° 848 KOGARKO, ASAVIN –25 Cape Verde Is. Santo Antao I. Sal I. Sao Vicente I. Boa...petrochemical types of volcanic rocks in the Cape Verde Islands and Cameron line. of the Cameroon line...basanite–tephrite melts. The Canary Archipelago and Cape Verde Islands demonstrate a more complex internal zoning |  | Ribeiro Da Costa, Isabel, Rodrigues, Pedro C.R., Barriga, Fernando J.A.S., Rona, Peter A., Nunes, Carla D., Vaz, Pedro D. (2014) Colourless aegirine in metamorphic rocks from Bayan Obo (Inner Mongolia): lack of charge transfer transitions as possible explanation. European Journal of Mineralogy, 25 (6) 987-993 doi:10.1127/0935-1221/2013/0025-2283 | Journal (article/letter/editorial) | | nepheline syenites from the Boavista Island (Cape Verde Archipelago), and from other geological settings...and aegirine-augite from the Boavista Island (Cape Verde Archipelago; Rocha Macedo et al., 1995) and from...ASTIMEX standards used were: diopside (Si, Mg, Ca), rutile (Ti), zirconia (Zr), jadeite (Al), chromium oxide...Nepheline syenites from the Boavista Island of Cape Verde Archipelago (Rocha Macedo et al., 1995) provided...aegirine and aegirine-augite from Boavista Island (Cape Verde Archipelago); additional aegirine and aegirine-augite |  | | Journal (article/letter/editorial) | | depleted signature was also reported for oceanic Cape Verde carbonatites that are likewise strongly enriched...Cl-bearing apatite (Cl content is up to 0.65 wt%) and rutile are also present in the glass. The composition...al. 1995). The presence of quenched apatite and rutile in the glass may be attributed to the rapid evolution...Canary Archipelago (Kogarko et al. 1995), and the Cape Verde Islands (Ryabchikov et al. 1989). We suggest...carbonatitic magmas in some of the Canary and Cape Verde islands and Fernando de Noronha. Acknowledgements |  | Bonadiman, Costanza, Hao, Yantao, Coltorti, Massimo, Dallai, Luigi, Faccini, Barbara, Huang, YU Xia (2009) Water contents of pyroxenes in intraplate lithospheric mantle. European Journal of Mineralogy, 21 (3) 637-647 doi:10.1127/0935-1221/2009/0021-1935 | Journal (article/letter/editorial) | | following localities were studied: Sal Island (Cape Verde Archipelago); Baker Rocks and Greene Point (Northern...garnets, sillimanite (and other aluminosilicates), rutile and zircon (Yesinowski et al., 1988; Rossman &...following localities were studied: Sal Island (Cape Verde Archipelago; Bonadiman et al., 2005); Baker Rocks...description of each locality is provided below. 2.1. Cape Verde (AC) The selected samples are anhydrous spinel-bearing...of the authors’ knowledge, data reported for Cape Verde represent the first measurements of water contents |  | O'Reilly, Suzanne Y., Zhang, Ming, Griffin, William L., Begg, Graham, Hronsky, Jon (2009) Ultradeep continental roots and their oceanic remnants: A solution to the geochemical “mantle reservoir” problem?. Lithos, 112. 1043-1054 doi:10.1016/j.lithos.2009.04.028 | Journal (article/letter/editorial) | | 1, Azores; 2, Madeira; 3, Canary Islands; 4, Cape Verde; 5, Fernando de Noronha; 6, Ascension Islands;...Re–Os studies of mantle xenoliths beneath the Cape Verde Island of Sal (Point 4, Fig. 4), close to an...(1, Azores; 2, Madeira; 3, Canary Islands; 4, Cape Verde; 5, Fernando de Noronha; 6, Ascension Islands;...as Fernando de Noronha, Trindade and parts of Cape Verde (e.g. Gerlach et al., 1987; Siebel et al., 2000;...Parana–Etendeka continental flood basalts. Basalts from the Cape Verde Islands, located near the western margin of a |  | | Journal (article/letter/editorial) | | to unmixing of carbonatites on Brava Island (Cape Verde) and a general model of carbonatite genesis in...2016 Abstract The carbonatites of Brava Island, Cape Verde hot spot, allow to investigate whether they represent...et al. 1999; Hoernle et al. 2002) and from the Cape Verde islands (Assunção et al. 1965; Machado et al...Pacific; Thompson et al. 2001) and Santo Antão (Cape Verde; Holm et al. 2006) reveal that mafic alkali magmas...ocean island settings. Geological setting The Cape Verde archipelago is situated 560–870 km west of the |  | | Journal (article/letter/editorial) | | including those from the two known oceanic locations (Cape Verde and Canary islands9,11 ), generally have CaO...oceanic island basalts: including the Canary, Cape Verde, Society, Samoa, Caroline and Austral-Cook islands)...very low SiO2 (<4 wt%) and MgO (<2 wt%) from the Cape Verde and Canary islands11 . Comparatively, the late... An oceanic carbonatite volcano on Santiago, Cape Verde Islands. Nature 294, 644–645 (1981). 9. Hoernle...to unmixing of carbonatites on Brava Island (Cape Verde) and a general model of carbonatite genesis in |  | Geldmacher, Jörg, Hoernle, Kaj, Hanan, Barry B., Blichert-Toft, Janne, Hauff, F., Gill, James B., Schmincke, Hans-Ulrich (2011) Hafnium isotopic variations in East Atlantic intraplate volcanism. Contributions to Mineralogy and Petrology, 162 (1) 21-36 doi:10.1007/s00410-010-0580-5 | Journal (article/letter/editorial) | | Schmincke 1993; Geldmacher et al. 2001, 2005), and Cape Verde (e.g., Holm et al. 2006) can be found along the...Canary Islands that merges with the Azores and Cape Verde anomalies at depths of 1,450–1,900 km before...ph os n? i th ti o . L na nt m i Coonta c 15.65 Cape Verdes LVC Madeira domain 15.60 207Pb/204Pb ...Josephine Smt. 0.5130 C 0.5129 LVC 0.5128 Azores Cape Verdes 0.5127 b 0.5126 18.0 18.5 19.0 19.5... (2007) and Elliot et al. (2007) and for the Cape Verde island Santiago from Barker et al. (2009) and |  | 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...protogranular texture in spinel harzburgite (Cape Verde; crossed polars). (c) Opx porphyroclasts with...opx porphyroclasts. (d) Spinel lherzolite from Cape Verde with primary cpx. (plane-polarized light.). Abbreviations |  | | Journal (article/letter/editorial) | | apatite, priderite, wadeite, melanite, perovskite, rutile, magnetite, ilmenite and spinel. There are also...limited. In marine and oceanic environments: Cape Verde Island, Tristan da Cunha Island, Kerguelen, Utsuryo |  | | Journal (article/letter/editorial) | | tenths of a per cent in ilmenite, titanomagnetite, rutile, and titanite. GEOCHEMISTRY AND FRACTIONATION OF...and Hf distribution in (1) Chernigov and (2) Cape Verde rocks FRACTIONATION OF ZIRCONIUM AND HAFNIUM...similar example is likely carbonatites from the Cape Verde Islands, which are the most ancient igne ous...average Zr/Hf ratio in calcite car bonatites of Cape Verde Islands is higher than that in chondrite (60)...Zelenogo Mysa (Tectonics and Magmatism of the Cape Verde Islands), Moscow: Nauka, 1990. McDonough, W.F |  | | Journal (article/letter/editorial) | | apatite, priderite, wadeite, melanite, perovskite, rutile, magnetite, ilmenite and spinel. There are also...limited. In marine and oceanic environments: Cape Verde Island, Tristan da Cunha Island, Kerguelen, Utsuryo...1977. The conference, like the First Conference in Cape Town, was a forum for discussion of kimberlites |  | 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) | | dark reddish-black rims. In some thin sections, rutile needles and apatite inclusions are observed at...dark-brown section of mica phenocrysts. The titanite/rutile-biotite 566 F. Yavuz et al. intergrowth, also...the islands of Hawaii (Mansker et al., 1979), Cape Verde (Furnes and Stillman, 1987) and Gough (Le Roex...Mongolian basanites (Ryabchikov et al., 1982); Cape Verde (Furnes and Stillman, 1987); SE Brazil (Meyer...lamprophyre sheet intrusion complex on Maio, Cape Verde Republic. J. Geol. Soc. London 144, 227–241. |  | Pilet, S., Abe, N., Rochat, L., Kaczmarek, M.-A., Hirano, N., Machida, S., Buchs, D. M., Baumgartner, P. O., Müntener, O. (2016) Pre-subduction metasomatic enrichment of the oceanic lithosphere induced by plate flexure. Nature Geoscience, 9 (12) 898-903 doi:10.1038/ngeo2825 | Journal (article/letter/editorial) | | suggested to explain metasomatism observed in Cape Verde xenoliths26 , for example. However, much of the...accessory phases, such as apatite, allanite and rutile (Fig. 4d,e)—phases which are observed in metasomatic...2 Hydrous vein (46% cpx, 25% amph, 25% plg, 1% rutile, 1% sphene, 2% apatite, 0.025% allanite) 10 1...explained by the difference of accessory phases (rutile, apatite, sphene, allanite), which crystallized...amphibole; grt, garnet; plg, plagioclase; rut, rutile. See Supplementary Information for the modelling |  | Cheng, Zhiguo, Zhang, Zhaochong, Hou, Tong, Santosh, M., Zhang, Dongyang, Ke, Shan (2015) Petrogenesis of nephelinites from the Tarim Large Igneous Province, NW China: Implications for mantle source characteristics and plume–lithosphere interaction. Lithos, 220. 164-178 doi:10.1016/j.lithos.2015.02.002 | Journal (article/letter/editorial) | | sodalite, apatite, rutile, biotite and amphibole and alkali feldspar. We report rutile SIMS U-Pb age of...Large igneous province; Mantle plume; Nephelinite; Rutile geochronology; Magnesium isotope; Plume-lithosphere...interaction. In this contribution, we report the rutile U-Pb age, major and trace element geochemistry...clinopyroxene, nepheline, Fe-Ti oxides, sodalite, apatite, rutile, biotite and amphibole and alkali feldspar (Fig...typically occur in the groundmass (Fig. 3e and f). Rutile grains are mostly subhedral or fragmental 7 ACCEPTED |  | | Journal (article/letter/editorial) | | ultrapotassic magmas were described at Maio Island, Cape Verde Archipelago, and Sáo Tomé Island [10, 11]. Previously...composition. Such Ti-concentrating mantle minerals as rutile, armalcolite, ilmenite, and minerals of the lindsleyite...Generation of large plumes beneath the Atlantic Ocean (Cape Verde, Canaries, Iceland, and Tristan da Cunha plumes)...Hertogen, and P. Plinke, “Oceanic Tholeiites on the Cape Verde Islands: Petrochemical and Geochemical Evidence |  | Gwalani, L. G., Rogers, K. A., Demény, A., Groves, D. I., Ramsay, R., Beard, A., Downes, P. J., Eves, A. (2010) The Yungul carbonatite dykes associated with the epithermal fluorite deposit at Speewah, Kimberley, Australia: carbon and oxygen isotope constraints on their origin. Mineralogy and Petrology, 98 (1) 123-141 doi:10.1007/s00710-009-0102-1 | Journal (article/letter/editorial) | | rarely, in oceanic environments, e.g., Canary and Cape Verde Islands (Fuster et al. 1968; Le Bas 1981; Silva...SPG035), altered amphibole/clinopyroxene, magnetite, rutile, zircon, baddeleyite and REE-fluorocarbonate (Table...ilm, zirc ± epidote, py, cpy. Incl: zirc, badd, rutile, monazite (LGS016, LGS015) Generally mediumto...py, ± cpy, pyrr, marc, zirc (LGS009). Ti-V-magt, rutile, chlt, qtz, xenotime Augite; hbl (altd to chlt);...descloizite (PbZnVO4(OH); LGS1), ?gt, rutile. Bi-sulphide, apat, rutile incl in calcite (LGS4 and 18). K-fenitized |
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