Catherine Deniel

TL;DR: In this article, a detailed study of the Himalayan two-mica leucogranites, such as the Manaslu pluton, indicate that they have very uniform mineralogical, petrological and structural characteristics.

TL;DR: A detailed isotopic study of the Manaslu leucogranite was carried out as discussed by the authors, and a U-Pb age of 25 Ma and a whole rock Rb-Sr age isochron of 18 Ma were obtained, suggesting that the magmatic activity lasted at least 7 Ma.

TL;DR: In this article, trace element and radiogenic isotope data have been measured on Oligocene flood basalts from the northwestern Ethiopian plateau to investigate and identify the nature of mantle and crustal sources involved in the genesis of this huge volume of prerift basalts to constrain the interaction between the Afar mantle plume and the lithosphere at the onset of continental break-up.

TL;DR: In this paper, a new scheme for the simultaneous separation of lead and strontium is described and applied to the determination of isotope ratios in silicate samples, based on the selectivity and high capacity of the extraction chromatographic material referred to as Sr. This method affords a straightforward separation of Sr and Pb on 150μl columns, with high Pb yield (>96%), good purity and satisfactory blank levels, using small volumes of mineral acids (HNO 3 and HCl) easy to purify by sub-boiling distillation.

TL;DR: In this paper, the authors used trace element data to identify distinct geochemical groups and evaluate the role of differentiation processes in the discovery of low-Ti basalts in the Afro-Arabian CFB province.