Based on new data on the bulk composition, concentrations of rare and rare
earth elements, and He, Sr, and Nd isotopy in La Palma Island basalts, the
problem of mantle sources of these rocks is discussed. The bulk chemistry a
nalysis showed that the La Palma basalts are enriched in titanium and iron
and may be considered as Fe-Ti basalts typical of mantle plumes. The concen
trations of rare earth elements also exhibit a trend characteristic of plum
e assemblages. However, the isotopic composition of the basalts yield evide
nce of a mixed origin including BSE, HIMU, and MORB source types.