Abstract Despite Nb and Ta being considered as 'geochemical twins', most Ta mineral
deposits are associated with muscovite-bearing peraluminous granites and related …

A map of the ocean basins (Fig. 5.1) shows that their most conspicuous topographic feature
is the system of mid-oceanic ridges, the crests of which rise on average 1000-3000 m above …

Petrological and geochemical data are reported for basalts and silicic peralkaline rocks from
the Quaternary Gedemsa volcano, northern Ethiopian rift, with the aim of discussing the …

Page 1 Granitoid Rocks DB Clarke BSc, MA, PhD Department of Earth Sciences Dalhousie
University Halifax Nova Scotia Canada kluwer the language of science Page 2 Page 3 …

The most commonly used tectonic discrimination diagrams for granites were introduced by
Pearce et al.[Pearce, JA, Harris, NBW, Tindle, AG, 1984. Trace element discrimination …

Recent advances in instrumental technology are providing archaeologists with enticing
opportunities in the chemical analysis of geological materials. These advances, however …

The problems of identification of A-type granitoids are analyzed. These rocks occur in
different geodynamic settings. Owing to their mantle nature, they show distinct REE …

The generation of magmas in the East African Rift System (EARS) is largely the result of
either:(A) melting of easily fusible compositions located within the lithospheric mantle due to …

The importance of zircon in geochemical and geochronological studies, and its presence not
only in aluminous but also in alkaline rocks, prompted us to think about a new zircon …

In order to investigate the effect of increasing melt peralkalinity on partitioning, partition
coefficients have been determined using neutron activation analyses of coexisting …