 | | 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...a model fractionating olivine, clinopyroxene, perovskite, biotite, apatite, titanite, sodalite and FeTi...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 |  | de Ignacio, Cristina, Muñoz, Mercedes, Sagredo, Juana, Fernández-Santín, Soledad, Johansson, Åke (2006) Isotope geochemistry and FOZO mantle component of the alkaline–carbonatitic association of Fuerteventura, Canary Islands, Spain. Chemical Geology, 232 (3) 99-113 doi:10.1016/j.chemgeo.2006.02.009 | Journal (article/letter/editorial) | | they have been reported only at the Canary and Cape Verde islands in the Atlantic Ocean. In the Canary...we report isotopic (Sr, Nd, Pb) data on: (1) perovskite clinopyroxenites that were not previously considered...well as for the Montaña BlancaEsquinzo sector perovskite–clinopyroxenites were obtained at the Centro...inner zones of calciocarbonatite (4) traverse perovskite–clinopyroxenite (2). powder was performed in...BM3/UL10 892 352 371 086 888 153 800 Perovskite–clinopyroxenite Perovskite–clinopyroxenite Fine-grained ijolite |  | | 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...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...present knowledge. Geological Situation The Cape Verde archipelago is situated in the eastern part of |  | | 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 |  | | Journal (article/letter/editorial) | | Geochemistry of Mantle Peridotites from Sal Island, Cape Verde Archipelago G. E. Brügmanna, Academician of the...ascending mantle plume that controls magmatism of Cape Verde Archipelago. This suggestion is substantiated...of Fe3+ incorporated into Al-bearing silicate perovskite must occur under the lower mantle conditions...the formation of plume material pertaining to Cape Verde Archipelago. Since both Os and Re have prominent...Fogo Island (southern group of islands in the Cape Verde Archipelago) also have high 187Os/188Os values |  | | Journal (article/letter/editorial) | | beneath the North Atlantic: The Azores, Canary and Cape Verde plumes Morvarid Saki a,∗ , Christine Thomas a...the thinner upwellings of Azores, Canaries and Cape Verde hotspots at the surface. © 2014 Elsevier B.V...endothermic phase transformation from ringwoodite to perovskite near 660 km depth (Fei et al., 2004; Ito and...upwellings, the phase transition of majorite–garnet to perovskite becomes dominant (Deuss et al., 2006; Houser...normal transition zone thickness beneath the Cape Verde hotspot, which is in contrast to the work of |  | | Journal (article/letter/editorial) | | from the Cape Verde Archipelago f>5 Tertiary and Pleistocene Sediments from the Cape Verde Archipelago...metamorphosed limestones, are described from the Cape Verde Archipelago. HE Walter Child Collection in the...above contains in addition perovskite derived from the melilitebasalt of M. Verde. (BM 1915/130/608) West...typical of the Miocene I Sediments from the Cape Verde Archipelago 67 of Southern S. Tiago where it...limestone, Bathing place, Mindello, S. Vicente. C. Verde Is. BM 1915/130/591. x 40. B. Metamorphosed limestone |  | | Journal (article/letter/editorial) | | that the phase transition from ringwoodite to perovskite plus magnesowüstite and possibly iron enrichment...superplume. Temperatures are computed assuming a perovskite–magnesiowüstite composition, which may not be...anomalies. Canary rises up from the superplume. The Cape Verde plume further south is less well resolved and...plumes and several ISC-reporting stations on Cape Verde islands, the change in character cannot easily...vertical cross-sections through the complex Canary/Cape Verde plume system. The velocity anomalies of the original |  | | Journal (article/letter/editorial) | | ultrapotassic magmas were described at Maio Island, Cape Verde Archipelago, and Sáo Tomé Island [10, 11]. Previously...ferripericlase + Mg-perovskite + Ca-perovskite assemblage (Fig. 6). In this mantle zone perovskite contains close...to 8% Ca. The K partition coefficient for Ca-perovskite is relatively high (0.39), and this value for...in Ca-perovskite. As a mantle diapir ascends at depths of approximately 660 km, Ca-perovskite becomes...becomes unstable, and its reaction with Mg-perovskite yields majorite, ringwoodite, and (as the pressure further |  | | Report (issue) | | cm, which may be highly modified; overgrowing perovskite and massive. Twinning: Commonly as penetration...76 Nb0.19 Ta0.01 )Σ=0.96 O3 . Mineral Group: Perovskite group; TiB > 0.5. Occurrence: A primary phase...syenite massifs and alkalic pegmatites; replacing perovskite in carbonatites. Association: Nepheline, microcline...aegirine, rare-earth-bearing apatite, arfvedsonite, perovskite, ilmenite, eudialite–eucolite, titanite, lamprophyllite...complex, Minas Gerais, Brazil. On Boa Vista, Cape Verde Islands. Name: From the Russian name for the |  | | 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 |  | Zhang, Guo-Liang, Wang, Shuai, Zhang, Ji, Zhan, Ming-Jun, Zhao, Zhi-Hua (2020) Evidence for the essential role of CO2 in the volcanism of the waning Caroline mantle plume. Geochimica et Cosmochimica Acta, 290. 391-407 doi:10.1016/j.gca.2020.09.018 | Journal (article/letter/editorial) | | rare, and known to occur at only two locations: Cape Verde Islands and Canary Islands (Hoernle et al., 2002)...of olivine and clinopyroxene (Cpx), and rare perovskite (Pv), apatite (Apt), ilmenite (Ilmt), and Ti-rich...trace-element compositions, including those of olivine, perovskite (Pv), ilmenite, apatite, nepheline, plagioclase...content of >8.2 wt.% (Supplementary Table 2), while perovskite exists only in the two most primitive samples...and lowest SiO2 contents). After completion of perovskite crystallization, crystallization of ilmenite |  | | Journal (article/letter/editorial) | | wt.% MgO, 10.7 wt.% FeO) and olivine (Fo99). Perovskite and apatite have been found only as microlites...of apatite and anhedral dark-green olivine and perovskite. Melt inclusions are often cleavage-arranged...Euhedral spinel forms clusters where olivine, perovskite and apatite microlaths have been detected (Fig...olivine and dolomite; (e) solid inclusion with perovskite and olivine. The carbonates are calcite and...Liu, 1995). Partial microprobe analyses of two perovskite grains (<10 mm) yielded average contents of SiO2 |  | | Journal (article/letter/editorial) | | inclusions have been reported as inclusions in perovskite from a calciocarbonatite intrusion (Kogarko et...5% MgO, have also been found on San-Vincente, Cape Verde Islands (Ryabchikov et al. 1989), where carbonatite...development of carbonatite magmatism on the Canary and Cape Verde Islands could be related to large scale partial...Although some 273 Mg-rich carbonatites from the Cape Verde Islands are believed to contain secondary dolomite...dolomite- and calcio-carbonatites are present in the Cape Verde Islands with the former being derived at deeper |  | | Journal (issue) | | VOLCANIC ROCKS FROM THE CAPE VERDE ISLANDS GERALD M. PART BULLETIN OF THE BRITISH MUSEUM (NATURAL HISTORY)...LONDON 11950 i No. 2 VOLCANIC ROCKS FROM THE CAPE VERDE ISLANDS BY GERALD M. PART Pp. 25-72; Pi. 4;...Ten Shillings ' . VOLCANIC ROCKS FROM THE CAPE VERDE ISLANDS By GERALD PART M. Contents List of...Vicente. 17. Augitite, Plate 4. Map of the Cape Verde Islands S. Nicolao . Trinadade, Fogo Joao...from the cape verde islands 28 Preface and List of Collections The Museum from the Cape Verde one collected |  | | Journal (article/letter/editorial) | | visible under Hawaii, Tahiti, Louisville, Iceland, Cape Verde, Reunion, Kerguelen, Amsterdam, Afar, Eifel,...Iceland Azores Bermuda New England Madeira Canary Cape Verde Fernando Ascension St. Helena Arnold Trindade...Helmberger, 1983; Lay et al., 2004) and it marks the perovskite–postperovskite phase transition, it could be...traces. Among these are Hawaii, Iceland, Reunion, Cape Verde, and the Azores. Others, such as Bermuda, do...zones exist in the whole mantle under Canary and Cape Verde. Under other Atlantic hotspots (New England, |  | | Journal (article/letter/editorial) | | (phenocrysts of sphene are present in phonolites, but perovskite is observed in some cases in the groundmass of...samples of nephelinite, very small grains of perovskite are present in the groundmass in equilibrium...late titanomagnetite, but rocks containing both perovskite and ilmenite were not found. In the phonolites...1 (method 5). In two samples of nephelinite, perovskite is present in the groundmass instead of ilmenite...activity can be found from the equilibrium of perovskite with sphene. By considering the composition of |  | | Journal (article/letter/editorial) | | online 18 April 2009 Keywords: Pyrochlore Betafite Perovskite Kimberlite Carbonatite Venezuela a b s t r a...OH)−. The zoning patterns and the absence of perovskite indicate the dominant role of F among fluid components...pyrochlore from the San Vicente carbonatite, Cape Verde (up to 10.3 wt.%, Hodgson and Le Bas, 1992),...concentrators of Nb, Zr, Ta, Th, U and possibly REE. No perovskite, rutile, zircon or other Zr-bearing minerals...pyrochlore-group mineral is stabilised in preference to perovskite, Fig. 8. Relations between the 2(Ti,Zr) + 2(Th |  | Carnevale, Gabriele, Caracausi, Antonio, Correale, Alessandra, Italiano, Laura, Rotolo, Silvio G. (2021) An Overview of the Geochemical Characteristics of Oceanic Carbonatites: New Insights from Fuerteventura Carbonatites (Canary Islands) Minerals, 11 (2) 203 doi:10.3390/min11020203 | Journal (article/letter/editorial) | | continental counterpart, having been reported only in Cape Verde and Canary Islands. This paper provides an overview...Islands). Trace elements show a similar trend as Cape Verde carbonatites, almost tracing the same patterns...their petrogenesis, and they clearly differ from Cape Verde carbonatites, i.e., fluids from a deep and low...isotopes; oceanic carbonatites; Fuerteventura; Cape Verde Characteristics of Oceanic Carbonatites: New...Ocean just in front of the African coasts: at Cape Verde Archipelago and Fuerteventura Island (Canary |  | | 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 |  | Braunger, Simon, Marks, Michael A.W., Wenzel, Thomas, Chmyz, Luanna, Guitarrari Azzone, Rogério, Markl, Gregor (2020) Do carbonatites and alkaline rocks reflect variable redox conditions in their upper mantle source?. Earth and Planetary Science Letters, 533. 116041 doi:10.1016/j.epsl.2019.116041 | Journal (article/letter/editorial) | | garnet), oxides (e.g. magnetite, pyrochlore, perovskite), sulfides (e.g. pyrrhotite, galena, pyrite),...(tetraferri)phlogopite; pl = plagioclase; prv = perovskite; sgm = sodalite-group minerals; sp = spinel;...20% carbonate) consists of euhedral melilite, perovskite and clinopyroxene, euhedral to anhedral biotite...of spinel and sometimes ilmenite exsolutions. Perovskite forms euhedral to subhedral crystals of various...Okaite from Oka containing clinopyroxene (e-1), perovskite (e-2), melilite, magnetite and calcite (e-3) |  | | Journal (article/letter/editorial) | | < Na2O. The same net effect is known for some Cape Verde Island lavas where microprobe analysis of supposed...instead. Other minerals such as melanite garnet, perovskite, titanite (sphene), Fe-oxides, biotite and other...fact that the pyroxene melanephelinites of the Cape Verde Islands were originally called 'pyroxenites'...Angola Antarctica Australia Brazil Canary Is Cape Verde Is Caroline Is Comores Is Cook Is Czechoslovakia...1985. Carbonatites and associated rocks from the Cape Verde Islands. Ph.D. thesis, Univ. Leicester (unpublished) |  | Nabyl, Zineb, Massuyeau, Malcolm, Gaillard, Fabrice, Tuduri, Johann, Iacono-Marziano, Giada, Rogerie, Grégory, Le Trong, Emmanuel, Di Carlo, Ida, Melleton, Jérémie, Bailly, Laurent (2020) A window in the course of alkaline magma differentiation conducive to immiscible REE-rich carbonatites. Geochimica et Cosmochimica Acta, 282. 297-323 doi:10.1016/j.gca.2020.04.008 | Journal (article/letter/editorial) | | alkaline provinces (East African Rift, Canary and Cape Verde Islands) and show that REE concentrations of...intracontinental rifting compositions, and the Canary and Cape Verde Islands representing hotspot settings on an oceanic...SiO2 (arrow in Fig. 8a). For the Canary and the Cape Verde Islands, 686 and 312 samples were also selected...East African Rift and in Fig.10b for Canary and Cape Verde Islands. In all cases, the REE-richest carbonatites...the carbonatites occurring in the Canary and Cape Verde Islands are not particularly enriched in REE |  | | Journal (article/letter/editorial) | | Ocean, in the New England seamounts, Azores, Cape Verde, and Canarias. In contrast to Group I, these...Canarias ( HOERNLEet al., 199 1) , and Azores and Cape Verde (DAVIES et al., 1989; DUPRE et al., 1982); in...high-pressure partitioning of thorium in calcium silicate perovskite can explain its depletion (bT0 et al., 1988)...and Pb-Sr-Nd isotope study of the Azores and Cape Verde hot-spots: The geodynamic implications. In Magrnatism |  | | Journal (article/letter/editorial) | | hauyne, apatite, priderite, wadeite, melanite, perovskite, rutile, magnetite, ilmenite and spinel. There...limited. In marine and oceanic environments: Cape Verde Island, Tristan da Cunha Island, Kerguelen, Utsuryo |
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