Both the Sistan Suture Zone of eastern Iran and the Nehbandan Fault contain Plio-Quaternary Nehbandan mafic lavas. Positive anomalies in the large ion lithophile elements (LILE) and negative anomalies in Nb (niobium) exist in these mafic lavas. This indicates the occurrence of subduction magmatism and post-collision volcanism. Petrologic and geochemical analyses distinguished two groups of lava...

Abstract This study of Sr-Nd initial isotopic ratios plutons from the North Patagonian batholith (Argentina and Chile) revealed that a secular evolution spanning 180 m.y., Jurassic to Neogene, can be established in terms magma sources, which turn are correlated with changes tectonic regime. The provenance composition end-member components source magmas represented by (87Sr/86Sr 143Nd/144Nd) plu...

One of the most crucial factors involved in the optimum design and cost estimation of rock sawing process is the rock abrasivity that could result in a significant cost increase. Various methods including direct and indirect tests have been introduced in order to measure rock abrasivity. The Schimazek’s F-abrasiveness factor ( ) is one of the most common indices to assess rock abrasivity.  is t...

The Singhbhum craton, eastern India records multiple stages of emplacement Precambrian dyke swarms with contrasting petrogenetic models proposed for their formation. In this study, we document elemental and Sr-Nd isotopic data three major in the southern part including ca. 2.7 Ga Ghatgaon swarm, Early Proterozoic Keonjhar swarm 1.76 Pipilia swarm. Dyke compositions are dominated by basalt basal...