Pacaya volcano is a persistently active basaltic cone complex located in the Central American Volcanic Arc in Guatemala. In May of 2010, violent Volcanic Explosivity Index-3 (VEI-3) eruptions caused significant topographic changes to the edifice, including a linear collapse feature 600 m long originating from the summit, the dispersion of ~20 cm of tephra and ash on the cone, the emplacement of...

introduction the area reviewed and studied in this paper is located 5 km southeast of sarbisheh city at eastern border of the lut block (jung et al., 1983; karimpour et al., 2011; richards et al., 2012) in eastern iran between 59° 47′ and 59° 53′ e longitude and 32°30′ and 32°34′ n latitude. the magmatic activity in the lut block began in middle jurassic (165-162 ma) and reached its peak in ter...

Based on chemical composition and timing of late Paleogene Neogene igneous rocks in southern Patagonia, six suites are identified correlated with subduction processes during the approaching active oceanic ridges. magmatism took place after a period decreased sub-alkaline (LPg Suite). Early Miocene calc-alkaline mark reactivation acceleration (Suite 1). These located at ca. 200 km from trench ty...

Campi Flegrei is a large volcanic complex located west of the city of Naples, Italy. The area has been the site of volcanic activity for more than 60 ka and represents a potential volcanic hazard owing to the large local population. In this study, the geochemistry of the magma associated with two different eruptions at Campi Flegrei has been characterized, with the aim to identify geochemical t...

The transition from subduction to transform motion along horizontal terminations of trenches is associated with tearing the subducting slab and strike-slip tectonics in overriding plate. One prominent example northern Tonga zone, where abundant faulting NE Lau back-arc basin plate boundary asymmetric rollback. Here, we address fundamental question: how does this subduction-transform influence s...

The South Malang Region is located in the south-eastern part of Southern Mountain Volcanic Arc; it presents different opportunities for hydrocarbon exploration. stratigraphy study area from old to young consists Oligocene rocks (Mandalika, Watupatok, and Arjosari Formation), Early Miocene Carbonates (Campurdarat Jaten Middle (Wuni Late Miocene-Pliocene (Nampol, Oyo, Wonosari Holocene alluvial d...

Volcanic arc clusters are groups of adjacent volcanic edifices that allow the investigation geochemical changes occurring through time within a limited area (< few hundreds km2). As such they may increase our understanding processes lead to magma differentiation in arcs. Geochemical over can be related source or intracrustal processes. Here, we show magmatic rocks 9 Chachimbiro-Pulumbura-Pilavo...

The Paleozoic volcano-sedimentary rocks within the structural basement of horst-and-graben system Catalan Coastal Ranges (CCR) are composed black shale, volcaniclastic sediments, lava flows, sills and lithocrystalloclastic tuffs. sediments depleted in high-field strength elements (HFSE) such as Nb, Ta, Zr, Hf Ti, suggesting their accumulation Andean-type active continental margin environment. V...