Eruption forecasting is a major goal in volcanology. Logically, but unfortunately, forecasting hazards related to non-magmatic unrest is too often overshadowed by eruption forecasting, although many volcanoes often pass through states of non-eruptive and non-magmatic unrest for various and prolonged periods of time. Volcanic hazards related to non-magmatic unrest can be highly violent and/or de...

Island arcs are postulated as the juvenile components that contribute to growth of continental crust. Growth rates arc crusts were previously computed using crustal thicknesses derived from seismic data. Consequently, oceanic island also constrained by limited data availability. This work presents first comparison gravity-derived magmatic Western Pacific arcs. We used statistical correlation be...

A structural and petrological study of the Late Proterozoic rocks in the Wadi Kid area, Sinai, Egypt indicates the presence of an extensional metamorphic core complex in the northern Arabian–Nubian Shield. Gneissic domes throughout the Arabian–Nubian Shield resemble the core complex of the Wadi Kid area and as a result, they are interpreted as extensional metamorphic core complexes. The presenc...

Intrusive rocks related to porphyry copper mineralization are part of the wide diversity of subduction-related, mantle-derived, igneous rocks generated in convergent margin settings. What differentiates them from barren igneous rocks results ultimately from the multi-component and multi-stage processes that condition magma composition in these settings. Unfortunately, the petrogenetic history i...

Siliciclastic rocks of the upper Byrd Group in the Transantarctic Mountains record rapid denudation and molasse deposition during Ross orogenesis along the early Paleozoic convergent margin of Gondwana. These rocks, which stratigraphically overlie Lower Cambrian Byrd carbonate deposits, are dominated by fresh detritus from proximal igneous and metamorphic sources within the Ross Orogen. Biostra...

The Grenada back-arc basin is located between the Aves Ridge, which hosted remnant Early Paleogene “Great Caribbean Arc,” and Eocene to Present Lesser Antilles Arc. Several earlier studies have proposed different modes of opening for this basin, including N-S E-W directions. main aim study constrain circumstances leading basin. Three combined wide-angle reflection seismic profiles were acquired...