As razões isotópicas de He e de Ne permitem relacionar a ilha Terceira com uma pluma profundamente enraizada. Ainda que os os elementos incompatíveis apontem para o início da fusão parcial na zona da granada, as suas lavas apresentam, a maior parte das vezes, um carácter transicional e hiperstena normativa, que contrasta com o referenciado para algumas das ilhas da Macaronésia (e.g. Canárias e Cabo Verde). Esta diferença será discutida com base na variabilidade da espessura da litosfera subjacente aos arquipélagos em causa
We present new He isotopic data from subaerial and submarine samples collected along the Terceira Ri...
En este trabajo se ha realizado el estudio petrológico y de química mineral de una selección de lav...
The Azores islands in the central North-Atlantic originate from a regional melting anomaly, probably...
The available noble gas database shows that the presence of an atmospheric component in oceanic basa...
This work addresses the present-day (<100 ka) mantle heterogeneity in the Azores region through the ...
The Azores plateau, a bathymetric high, is seated on an anomalous mantle domain located in the Azore...
Terceira Island mafic lavas (50). However, if fractional crystallization explains the intra-system v...
Noble gas data (He and Ne) on olivine phenocrysts obtained from Azores’ lavas sampled along the Terc...
[1] The Terceira Rift formed relatively recently (∼1 Ma ago) by rifting of the old oceanic lithosphe...
Terceira Island mafic lavas (50). However, if fractional crystallization explains the intra-system v...
The mafic lavas of the Azores and Cape Verde Islands are of a highly varied composition, reflecting ...
The noble gases signature of Terceira lavas was recently described in terms of binary mixing between...
In order to undertake a preliminary assessment of the extent of symmetry in source composition and m...
The collection of helium isotopic data in the last twenty years has shown different signatures for M...
Several processes controlling magma rheology, crystallisation and cooling are believed to occur in m...
We present new He isotopic data from subaerial and submarine samples collected along the Terceira Ri...
En este trabajo se ha realizado el estudio petrológico y de química mineral de una selección de lav...
The Azores islands in the central North-Atlantic originate from a regional melting anomaly, probably...
The available noble gas database shows that the presence of an atmospheric component in oceanic basa...
This work addresses the present-day (<100 ka) mantle heterogeneity in the Azores region through the ...
The Azores plateau, a bathymetric high, is seated on an anomalous mantle domain located in the Azore...
Terceira Island mafic lavas (50). However, if fractional crystallization explains the intra-system v...
Noble gas data (He and Ne) on olivine phenocrysts obtained from Azores’ lavas sampled along the Terc...
[1] The Terceira Rift formed relatively recently (∼1 Ma ago) by rifting of the old oceanic lithosphe...
Terceira Island mafic lavas (50). However, if fractional crystallization explains the intra-system v...
The mafic lavas of the Azores and Cape Verde Islands are of a highly varied composition, reflecting ...
The noble gases signature of Terceira lavas was recently described in terms of binary mixing between...
In order to undertake a preliminary assessment of the extent of symmetry in source composition and m...
The collection of helium isotopic data in the last twenty years has shown different signatures for M...
Several processes controlling magma rheology, crystallisation and cooling are believed to occur in m...
We present new He isotopic data from subaerial and submarine samples collected along the Terceira Ri...
En este trabajo se ha realizado el estudio petrológico y de química mineral de una selección de lav...
The Azores islands in the central North-Atlantic originate from a regional melting anomaly, probably...