Continental arcs are the sites of production of continental crust, but the origin of these
magmatic systems is not well understood. Although a number of processes have been …

Deep fluids are important for the evolution and properties of the lower continental and arc
crust in tectonically active settings. They comprise four components: H2O, nonpolar gases …

This introductory article provides a synopsis of our current understanding of the form and
dynamics of magma reservoirs in the crust. This knowledge is based on a range of …

Arc magmas globally are H2O-Cl-S–rich and moderately oxidized (ΔFMQ=+ 1 to+ 2) relative
to most other mantle-derived magmas (ΔFMQ≤ 0). Their relatively high oxidation state limits …

Magmatic volatiles (for example, water) are abundant in arc melts and exert fundamental
controls on magma evolution, eruption dynamics and the formation of economic ore …

Chemical diversity in convergent margin magmas is a product of igneous differentiation in
crustal hot zones, vertically extensive regions characterised by a low-volume (< 20%) mobile …

Hydrous fluids released from subducting oceanic lithosphere fuel arc magmatism and
associated hydrothermal mineralization, including formation of porphyry copper deposits …

Arc magmas have higher water contents (2-6 wt.% H2O) than magmas generated in other
tectonic environments, with a growing body of evidence suggesting that some deep arc …

The CHONS elements that constitute the outgassed atmosphere and exosphere have likely
been delivered by chondritic materials to the Earth during planetary accretion and …

Although the capacity for water to lower the solidus during crustal melting is well recognised,
a modern consensus is that most granitic magmas are generated under fluid-absent melting …