Pacific Ring of Fire Expedition. A contact between the lower basaltic and upper felsic ash units in the wall of the West Rota caldera. The outcrop is approximately 2 meters tall.

Image ID: expl0081, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Location: Mariana Arc region, Western Pacific Ocean
Photo Date: 2004 April
Credit: Pacific Ring of Fire 2004 Expedition. NOAA Office of Ocean Exploration; Dr. Bob Embley, NOAA PMEL, Chief Scientist

• High Resolution Photo Available