Geologic Glossary Definition (English)
Volcanic Arc Defined
The following is in context to Geologic, because it's common for a single word to have multiple meanings you will find additional research links near the bottom of the page.
"Arcuate chain of volcanoes formed above a subducting plate.Arcuate chain of volcanoes formed above a subducting plate. The arc forms where the downgoing descending plate becomes hot enough to release water and gases that rise into the overlying mantle and cause it to melt. Arc rocks are mostly volcanic rocks from the volcanoes and sedimentary rocks made up of eroded debris from the volcanoes. Melted rock in the deeper plumbing of the arc which may crystallizes at depth to become an arc root plutons."
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