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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003766naa a2200397 4500
001oai:DiVA.org:uu-509766
003SwePub
008230822s2023 | |||||||||||000 ||eng|
024a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5097662 URI
024a https://doi.org/10.1016/j.lithos.2023.1073282 DOI
040 a (SwePub)uu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Barker, Abigailu Uppsala universitet,Mineralogi, petrologi och tektonik,Centre of Natural Hazards and Disaster Sciences (CNDS), Uppsala, Sweden4 aut0 (Swepub:uu)abiba516
2451 0a Disequilibrium in historic volcanic rocks from Fogo, Cape Verde traces carbonatite metasomatism of recycled ocean crust
264 1b Elsevier,c 2023
338 a electronic2 rdacarrier
520 a Fogo, Cape Verde, located upon thick oceanic lithosphere, provides a window into processes occurring in the mantle where recycled ocean crust in an upwelling mantle plume interacts with ambient mantle. Our objective is to investigate the nature of the lithologies of the mantle sources involved in the petrogenesis of historic volcanic rocks from Fogo. We observe enclaves and mingling textures in the lavas combined with oxygen isotope disequilibrium between olivine and clinopyroxene phenocrysts. Olivine δ18O values display positive correlations with Zr/Hf and Zr/Y and a negative correlation with U/Th, whereas clinopyroxene δ 18O values correlate positively with Ba/Nb. Heterogeneity between crystal populations and within the groundmass indicates that multiple magma batches are mixed beneath Fogo. In terms of mantle endmembers and source lithologies, a HIMU endmember was generated by melting of carbonated eclogite as indicated by low δ 18O values, Zr/Hf, Ba/Nb and high U/Th ratios. In contrast, we show the EM1 endmember has high δ 18O, Zr/Hf, Ba/Nb and low U/Th ratios, derived from melting of variably carbonated peridotite. Additionally, Ba/Th ratio are high, indicating that carbonatite melts have contributed to alkaline magma compositions at Fogo.
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Geologi0 (SwePub)105042 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geology0 (SwePub)105042 hsv//eng
700a Magnusson, E.u Uppsala universitet,Institutionen för geovetenskaper4 aut
700a Troll, Valentin R.u Uppsala universitet,Naturresurser och hållbar utveckling,Centre of Natural Hazards and Disaster Sciences (CNDS), Uppsala, Sweden;Instituto de Estudios Ambientales y Recursos Naturales (iUNAT), Universidad de Las Palmas de Gran Canaria (ULPGC), Las Palmas de Gran Canaria 35017, Spain4 aut0 (Swepub:uu)valtr808
700a Harris, C.4 aut
700a Mattsson, Hannes B.u Uppsala universitet,Mineralogi, petrologi och tektonik,Institute for Mineralogy and Petrology, ETH Zürich, Switzerland4 aut0 (Swepub:uu)hanma332
700a Holm, P.M.4 aut
700a Perez-Torrado, F.J.4 aut
700a Carracedo, J.C.4 aut
700a Deegan, Francesu Uppsala universitet,Naturresurser och hållbar utveckling,Centre of Natural Hazards and Disaster Sciences (CNDS), Uppsala, Sweden4 aut0 (Swepub:uu)frade877
710a Uppsala universitetb Mineralogi, petrologi och tektonik4 org
773t Lithosd : Elsevierg , s. 107328-107328q <107328-107328x 0024-4937x 1872-6143
856u https://doi.org/10.1016/j.lithos.2023.107328y Fulltext
856u https://uu.diva-portal.org/smash/get/diva2:1790360/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-509766
8564 8u https://doi.org/10.1016/j.lithos.2023.107328

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