The end of the Archean aeon (3.0–2.5 Ga) was a period of fundamental change in many
aspects of the geological record. In Archean cratons, this timespan is marked by a …

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 …

Porphyry deposits arguably represent the most economically important class of nonferrous
metallic mineral resources. These magmatic-hydrothermal deposits are characterized by …

Abstract U–Pb and Lu–Hf isotope analyses, obtained by laser ablation-sector field-
inductively coupled plasma-mass spectrometry on zircon grains from 37 granitoid samples …

All the published U–Pb geochronological data from zircon, titanite, sphene and monazite,
and Pb–Pb evaporation data applicable to the Palaeoarchaean-to-Neoarchaean geology of …

Abstract The Witwatersrand goldfields in South Africa have been, and promise to remain, the
world's largest goldproducing province, at leat for the medium-term future. The majority of …

The Witwatersrand gold fields in South Africa, the world's largest gold-producing province,
play a pivotal role in the reconstruction of the Archaean atmosphere and hydrosphere. Past …

This paper describes the petrology, geochemistry and petrogenesis of Archean granitoids.
Archean granites define a continuum of compositions between several end members:(i) …

Strongly peraluminous granites (SPGs) form through the partial melting of metasedimentary
rocks and therefore represent archives of the influence of assimilation of sedimentary rocks …

The crust of the Kaapvaal craton accreted throughout the Archaean over nearly 1 billion
years. It provides a unique example of the various geological processes that shape Earth's …