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Tephra from Kīlauea Volcano’s summit eruption

By Kīlauea
A close-up view of several pieces of tephra collected by Hawaiian Volcano Observatory geologists for analysis.
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Detailed Description

A close-up view of several pieces of tephra collected by Hawaiian Volcano Observatory geologists for analysis. The tephra, produced by the fissures erupting within Halema‘um‘u crater, is transported and deposited downwind of the eruptive vents. USGS photo by C. Parcheta.

Sources/Usage

Public Domain.