Pacific Ring of Fire Expedition. The vertical column in the centerof the image, called a dike, rises from below sea level to the pinnacle at thetop of the ridge. Interlaid massive lavas (darker horizontal bands)and ash-rich lava units (reddish) are
4/8/2019 12:01:47 PM
Date: 2004 April
Credit: Pacific Ring of Fire 2004 Expedition. NOAA Office of Ocean Exploration; Dr. Bob Embley, NOAA PMEL, Chief Scientist
Location: Mariana Arc region, Western Pacific Ocean
Subject: Ocean exploration