Event Name : Emmons first CFE
|Start: 400000 || Years BP Ar/Ar || |
|MaxVEI: ||4 ||
From Waythomas and others (2006): "The age of earliest volcanism is unknown, but it is likely that the center was intermittently active for several hundreds of thousands of years before the first caldera forming eruption occurred about 400,000 years B.P."
The Global database on large magnitude explosive volcanic eruptions (LaMEVE; 2017) reports a magnitude of 4, bulk eruptive volume of 0.1 cubic km and a dense rock equivalent eruptive volume of 0.04 cubic km for the eruption.