Mantle structure beneath the Macaronesian volcanic islands (Cape Verde, Canaries, Madeira and Azores): A review and future directions

Autor: Chiara Civiero, Joana Carvalho, Graça Silveira

Publikováno v: Frontiers in Earth Science, Vol 11 (2023)

Ocean island volcanism provides a unique window into the nature of mantle composition, dynamics and evolution. The four Macaronesian archipelagos–Cape Verde, the Canaries, Madeira and the Azores–are the main magmatic systems of the Central-East A

Externí odkaz: https://doaj.org/article/388a338c4e084188a5f920801e68be66

Dispersed East Africa-Arabia volcanism fed by a star-shaped mantle plume head

Autor: Chiara Civiero, Sergei Lebedev, Nicolas L. Celli

Hot mantle plumes, the thermo-chemical instabilities rising from Earth’s deep mantle, are believed to form large, round heads, followed by narrow tails. The impact of a plume onto the continental lithosphere causes uplift, rifting, and flood basalt

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f7dfb19464a46c46365cd3d4af66368e
https://doi.org/10.5194/egusphere-egu23-8343

Unveiling the heterogeneous structure of the upper-mantle beneath the Canary and Madeira volcanic provinces

Autor: Luciana Bonatto, David Schlaphorst, Graça Silveira, João Mata, Chiara Civiero, Claudia Piromallo, Martin Schimmel

The Canary and Madeira archipelagos are two hotspots in the Eastern Atlantic (27º to 33º N) that are close (430 km) to each other. Their volcanism is thought to be caused by distinct mantle upwellings. Recent high resolution regional P-wave and S-S

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aec7edf87811ba270c9bab424fe1f358
https://doi.org/10.5194/egusphere-egu22-10184

Evidence of oceanic plate delamination in the Northern Atlantic

Autor: Joao Duarte, Nicolas Riel, Chiara Civiero, Sonia Silva, Filipe Rosas, Wouter Schellart, Susana Custodio, Jaime Almeida, Pedro Terrinha, Antonio Ribeiro

The Earth’s surface is constantly being recycled by plate tectonics. Subduction of oceanic lithosphere and delamination of continental lithosphere constitute the two most important mechanisms by which the Earth’s lithosphere is recycled into the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d4c089065dbb4e68ebc8972feb170185
https://doi.org/10.21203/rs.3.rs-690433/v1

The Seismic Signature of Upper‐Mantle Plumes: Application to the Northern East African Rift

Autor: Saskia Goes, Chiara Civiero, John J. Armitage, James Hammond

Publikováno v: Geochemistry, Geophysics, Geosystems
Geochemistry, Geophysics, Geosystems, AGU and the Geochemical Society, 2019, 20 (12), pp.6106-6122. ⟨10.1029/2019GC008636⟩

International audience; Several seismic and numerical studies proposed that below, some hotspots upper-mantle plumelets rise from a thermal boundary layer below 660 km depth, fed by a deeper plume source. We recently found tomographic evidence of mul

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70b353e70601a5fda0a653f85e55364e
https://doi.org/10.1029/2019gc008636