Villaseca González, CarlosOrejana García, DavidHuertas Coronel, María JoséAncochea Soto, EumenioDe Ignacio San José, CristinaMata, J.Caldeira, R.García Rodríguez, MaríaMoreno Moreno, Juan AntonioPérez-Soba Aguilar, Cecilia María2025-02-252025-02-252025-04Villaseca, C., Orejana, D., Huertas, M. J., Ancochea, E., De Ignacio, C., Mata, J., Caldeira, R., García-Rodríguez, M., Moreno, J. A., & Pérez-Soba, C. (2025). The old central igneous complexes of Sal, Boa Vista and Maio islands: Implications for 17 Ma of isotopic evolution of the Cape Verde archipelago. Lithos, 498-499, 1079750024-493710.1016/j.lithos.2025.107975https://hdl.handle.net/20.500.14352/118314The central igneous complexes of the easternmost islands (Sal, Boa Vista and Maio) preserve some of the most ancient outcropping rocks of the Cape Verde (CV) archipelago. These Early to Middle Miocene (about 25 to 12 Ma) complexes show marked isotopic differences between mafic rocks from the northern (Sal and Boa Vista) and the southern Maio Island, the latter showing lower 143Nd/144Nd, 206Pb/204Pb, 207Pb/204Pb, and higher 87Sr/86Sr ratios. The main mantle plume composition beneath Cape Verde is here considered to be dominated by the FOZO component. Our data supports previous models suggesting the incorporation to plume components of minor DMM mantle sources in the northern CV island alignment, whereas mixing with the EM1 pole is prevalent on the southern CV islands. These isotopic differences are evident since the early stages of Cape Verde magmatism. The Late Miocene to Holocene time period (7 to 1.7 Ma) is characterized by the irruption of silica-undersaturated and carbonatite magmas with a relatively homogeneous isotopic composition and highly radiogenic Pb signatures (206Pb/204Pb up to 20.6 in carbonatitic rocks and 20.2 in silicate rocks) throughout most of the Cape Verde archipelago. During this transitional stage, the input of this new HIMU mantle component overprinted the previous mixing of the main FOZO plume component with shallow mantle members (DMM, EM1) of minor contribution.engjournal article1872-6143https://doi.org/10.1016/j.lithos.2025.107975https://www.sciencedirect.com/science/article/pii/S0024493725000349restricted access550.42(665.8)Intraplate alkaline magmatismCape Verde archipelagoRadiogenic isotope dataMantle source heterogeneityGeochemical temporal evolutionPetrología2503 Geoquímica2506.13 Petrología Ignea y Metamórfica