Tantalum, an important metal for high-technology applications, is recovered from oxide
minerals that are present as minor constituents in rare-metal granites and granitic rare …

We trace compositional changes of Nile sediments for 7400 km, from their sources in
equatorial rift highlands of Burundi and Rwanda to their sink in the Mediterranean Sea. All …

A set of global paleogeographic reconstructions for the 1770–1270 Ma time interval is
presented here through a compilation of reliable paleomagnetic data (at the 2009 Nordic …

The Central Asian Orogenic Belt contains many Precambrian crustal fragments whose origin
is unknown, and previous speculations suggested these to be derived from either Siberia …

Twenty-five years ago, initial plans for reconstructing the Rodinia supercontinent were being
drafted, based on the growing recognition of correlatable mid-Neoproterozoic (0.8–0.7 Ga) …

This study presents a general model for the evaluation of Rayleigh fractional crystallisation
as the principal differentiation mechanism in the formation of regionally zoned common and …

A practical classification of surface textures observed on detrital grains in sands and
sandstones is proposed, in order to enhance data reproducibility among operators and to …

This study investigates processes of sediment generation in equatorial central Africa. An
original, complete and integrated mineralogical‐geochemical database on silt‐sized …

This article investigates how, where, and to what extent the mineralogical and chemical
composition of sand-sized sediments is modified by extreme weathering in modern …

The Mesoproterozoic Kibara Belt (also Kibaran Belt or Kibarides in some references) of
Central Africa was often portrayed as a continuous, c. 1500km long orogenic belt, trending …