Abstract Although the evolution of residual melts in magmatic systems controls their eruptability and ore-forming potential, compositions are obscured plutonic rocks by a protracted near-solidus absence interstitial glass. Here, we trace melt from Strontian Intrusive Complex, Scotland, using element chemistry amphiboles, titanites which intergrown with amphibole rims. Laser ablation mapping rev...

Assimilation of crustal rocks by mafic magmas is considered important for the formation of sulfide ores. Radiogenic isotope systems may allow one to quantify the amount of contamination and to distinguish between possible contaminants. We have studied Sm-Nd, Rb-Sr, and U-Pb isotope systems in two mafic intrusions of the Nain Plutonic Suite: the 1333 Ma Voisey’s Bay intrusion that hosts the majo...

Abstract Hard rocks or crystalline (i.e., plutonic and metamorphic rocks) constitute the basement of all continents, are particularly exposed at surface in large shields Africa, India, North South America, Australia Europe. They were, still some cases, to deep weathering processes. The storativity hydraulic conductivity hard rocks, thus their groundwater resources, controlled by these processes...

in the centeral iranian volcanic belt (civb), north-west of shahre-babak, in area of javazm, dehaj and khabr, about 20 plutonic porphyritic tonalitic to granodioritic masses (1-50 km2) are intruded into a varity of rock sequences from eocene to early miocene in age. tonalitic and granodioritic rocks are some part of dehaj-sardoieh belt and having early miocene age. the civb contains intrusive a...

Late Cretaceous sandstone succession of the Pab Formation in western Sulaiman Fold Thrust belt Pakistan was investigated for petrology and bulk rock chemistry to determine its source terrain, paleo-weathering tectonic setting. The formation is mainly comprised with reddish maroon color shale arenaceous limestone. Texturally, fine coarse grained, sub-angular well-rounded moderately well sorted. ...

Understanding the evolution and processes that shape our planet critically depends on robustness of absolute ages process durations obtained from rocks crystals. Two main aspects time information magmatic systems are currently at forefront new knowledge. The capacity to determine human timescales makes it possible relate magma dynamics below active volcanoes with monitoring signals measured sur...

Uranium-series dating of carbonatitic ejecta clasts constrains the crystallization and differentiation timescales of the Laacher See volcano, which erupted 6·3 km of magma (dense rock equivalent) during one of the largest Late Quaternary eruptions in Central Europe. Carbonatites form a distinct population among plutonic ejecta that are present in the middle and late erupted Laacher See tephra. ...