Petrology and geochemical characteristics of granitic rocks from South Sulawesi, especially from Polewaliand Masamba area are presented in order to elucidate their origin of magma and geodynamic setting. The granitic rocks in these areas are dominated by granodiorite and granite in composition. Quartz, K-feldspar and plagioclase occur as major phases with hornblende and biotite as major ferroma...

Stable Ca isotopes are an increasingly useful tool for understanding the sources and processes leading to formation of magmatic rocks, yet isotope fractionation during genesis silicic continental crust is still poorly understood. Here, we present Ca, Sr, Nd isotope, as well major- trace-element whole-rock geochemical data A-, I-, S-type granites (n = 30) from Australia/Tasmania, Canada, France ...

Linear, north–south trending Peddavura greenstone belt occurs in easternmost part of the Dharwar Craton. It consists of pillowed basalts, basaltic andesites, andesites (BBA) and rhyolites interlayered with ferruginous chert that were formed under submarine condition. Rhyolites were divided into typeI and II based on their REE abundances and HREE fractionation. Rb–Sr and Sm–Nd isotope studies we...

The results of numerical modelling show that the mechanical stratification of the crust provides the fundamental control on fault spacing and, ultimately, the mode of extension. Macroscopic pre-existing structures and weaknesses are often thought to govern the behaviour of continental crust under extension, and many prior studies have focussed on the effect of heterogeneities in triggering faul...