Mount Bidkhan stratovolcano is located in the central Iranian volcanic belt. It is composed of several types of pyroclastic deposits, lava flows and intrusive bodies. Textural and chemical characteristics of plagioclase phenocrysts from the eruptive products volcanic edifice, record complex magma mixing events over the lifetime of the volcano. Evidences such as xenocrystic high Al+Ti clinopyrox...

introduction volcanic rocks with a porphyritic texture have experienced two crystallization stages. the first is slow, resulting in phenocrysts, and the second, which took place at, or near the surface, or during intrusion into a cooler body of rock, result in a groundmass of glass, or fine crystals. the pressure and temperature history of a magma during crystallization is recorded in the chemi...

The Goiás Archean Block (GAB) in central Brazil is an important gold district that hosts several world-class orogenic deposits. A better comprehension of the crustal, tectono-magmatic, and metallogenic settings GAB essential to accurately define its geological evolution, evaluate crustal growth models, target We present overview systems, regional whole-rock Sm-Nd analyses have been used constra...