The vertical column in the center of the image, called a dike, rises from below sea level to the pinnacle at the top of the ridge.


The vertical column in the center of the image, called a dike, rises from below sea level to the pinnacle at the top of the ridge. Interlaid massive lavas (darker horizontal bands) and ash-rich lava units (reddish) are also exposed on the islets of Maug. Image courtesy of Submarine Ring of Fire 2004 Exploration, NOAA Vents Program.

 

Related Links

Submarine Ring of Fire 2004

Submarine Ring of Fire 2004: April 9 Log

NOAA Ocean Explorer Gallery

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