The Cenozoic alkali basalt centres in north-eastern Brazil are believed to represent the surface track of the passage of the craton over the Fernando de Noronha plume (O’Connor and Duncan, 1990). This hypothesis is at present largely unconstrained because the only one previously studied xenolith occurrence, Pico Cabuji, showed large isotopic differences with xenoliths from the Fernando de Noronha island (Rivalenti et al., 2000). We revisit this hypothesis on the basis of a larger geochemical and isotope data set on the xenoliths of unstudied Brazilian localities (Fig. 1). Texturally, the xenoliths define three group: 1) porphyroclastic (lherzolites, harzburgites and one wehrlite); 2) protogranular (lherzolites and harzburgites); 3) transit...
International audienceThe alkali basalts of the Cerro de los Chenques quaternary backarc volcano (20...
Abstract Protogranular spinel-peridotite mantle xenoliths and their host sodic alkaline lavas of Cre...
International audiencePetrostructural analysis of 31 mantle xenoliths from three kimberlitic pipes i...
The Cenozoic alkali basalt centres in north-eastern Brazil are believed to represent the surface tra...
AbstractNew xenolith occurrences in the Cenozoic alkali basalts of north-eastern Brazil have been st...
We investigated new occurrences of mantle xenolith in the Cenozoic alkali basalts of north-eastern B...
Spinel-peridotite facies mantle xenoliths in Cenozoic alkali basalts of the Pico Cabuji volcano (Rio...
Cenozoic alkali basalts in the Rio Grande do Norte State and the Fernando de Noronha Island contain ...
abs. 255-28The composition and variability of the mantle lithosphere in NE Brazil and the effects of...
Quaternary basalts in the Cerro del Fraile area contain two types of mantle xenoliths; coarse-graine...
Information about the geochemical composition of metasomatic melts migrating through the Patagonian ...
There has been little research on geochemistry and isotopic compositions in tholeiites of the Northe...
In subduction zones, ultramafic xenoliths hosted in alkaline basalts can yield significant informati...
Cerro Redondo is an ancient cinder cone now almost completely eroded, sited over a sill that corresp...
We have studied the following topics: 1) metasomatism of the lithospheric mantle atop a plume (NE Br...
International audienceThe alkali basalts of the Cerro de los Chenques quaternary backarc volcano (20...
Abstract Protogranular spinel-peridotite mantle xenoliths and their host sodic alkaline lavas of Cre...
International audiencePetrostructural analysis of 31 mantle xenoliths from three kimberlitic pipes i...
The Cenozoic alkali basalt centres in north-eastern Brazil are believed to represent the surface tra...
AbstractNew xenolith occurrences in the Cenozoic alkali basalts of north-eastern Brazil have been st...
We investigated new occurrences of mantle xenolith in the Cenozoic alkali basalts of north-eastern B...
Spinel-peridotite facies mantle xenoliths in Cenozoic alkali basalts of the Pico Cabuji volcano (Rio...
Cenozoic alkali basalts in the Rio Grande do Norte State and the Fernando de Noronha Island contain ...
abs. 255-28The composition and variability of the mantle lithosphere in NE Brazil and the effects of...
Quaternary basalts in the Cerro del Fraile area contain two types of mantle xenoliths; coarse-graine...
Information about the geochemical composition of metasomatic melts migrating through the Patagonian ...
There has been little research on geochemistry and isotopic compositions in tholeiites of the Northe...
In subduction zones, ultramafic xenoliths hosted in alkaline basalts can yield significant informati...
Cerro Redondo is an ancient cinder cone now almost completely eroded, sited over a sill that corresp...
We have studied the following topics: 1) metasomatism of the lithospheric mantle atop a plume (NE Br...
International audienceThe alkali basalts of the Cerro de los Chenques quaternary backarc volcano (20...
Abstract Protogranular spinel-peridotite mantle xenoliths and their host sodic alkaline lavas of Cre...
International audiencePetrostructural analysis of 31 mantle xenoliths from three kimberlitic pipes i...