Keanakākoʻi tephra outcrop near Uēkahuna overlook
Detailed Description
Retired USGS Hawaiian Volcano Observatory geologist Don Swanson stands in front of an outcrop near Uēkahuna at the summit of Kīlauea, where deposits of the Keanakākoʻi tephra are exposed. Unit B, the reticulite deposit that formed from a lava fountaining eruption at Kīlauea summit about 500 years ago, is outlined in black. USGS photo.
Sources/Usage
Public Domain.