X1014250064-00195-39130</DOCNO> Ring of Fire [This Dynamic Earth, USGS] Volcanic arcs and oceanic trenches partly encircling the Pacific Basin form the so-called Ring of Fire, a zone of frequent earthquakes and volcanic eruptions.
(Volcanic arcs and oceanic trenches; partly encircling; the Pacific Basin)
Volcanic arcs and oceanic trenches
partly encircling
the Pacific Basin