Geology Seeps, Vent, & Whale Falls From The Desk of Zelnio: New Geophysical Study May Point The Direction To New Vent Discoveries Kevin Zelnio March 21, 2007 Best of ZelnioEast Pacific RiseHydrothermal VentmagmaMantle UpwellingMid-Ocean Ridge Perspective view of East Pacific Rise and the seismic velocity structure of the underlying mantle. Surprisingly, regions of magma storage in the mantle (shown as… View More From The Desk of Zelnio: New Geophysical Study May Point The Direction To New Vent Discoveries