An island arc is a curving series of volcanic islands that are created through the collision of tectonic plates in an ocean setting. The particular type plate boundary that yields island arcs is called a subduction zone. In a subduction zone, one...

A volcanic arc is chain of volcanic islands or mountains formed by plate tectonics as an oceanic tectonic plate subducts under another tectonic plate and produces magma. There are two types of volcanic arcs: oceanic arcs (commonly called island arcs, a...

Volcanic history in the Aleutian arc Benjamin Franklin was probably thefirst to suggest a correlation between volcanic eruptions and changes in the global climate when he proposed that a 1783 volcanic eruption on Iceland had induced abnormally cold temperatures later that year....

Abstract New U-Pb radiometric dates for K-bentonite horizons within the Lower Cambrian to Middle Ordovician platform carbonates from the Precordillera terrane of NW Argentina provide further constraints on models for the allochthonous or parautochthonous accretion of this terrane. Two K-bentonite layers from the...