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Aniakchak reported activity

ANIAKCHAK LINKS

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EVENT SPECIFIC INFORMATION

Event Name : Aniakchak Precaldera Dacite

Start: 14000 Years BP Tephrochronology
Stop: 3430 Years BP Tephrochronology

Lava flow: BibCard BibCard
Eruption Type:Effusive
Eruption Product: dacite BibCard
ChemYes
Otherfelsic

Description: From Bacon and others (2014): "Two lava flows and several pyroclastic deposits are younger than the last major glacial advance but preceded the Aniakchak II caldera-forming eruption."

"A blocky flow of dacite lava is present on the northeast flank of Aniakchak volcano (fig. 4 [in original text], included in unit Qbn). Compositional affinity of the lava with deposits on the caldera rim indicates that the flow likely postdates Aniakchak I. Dreher (2002, p. 17) reported Aniakchak II lithic breccia resting on the lava."

Neal and others (2001) also report a dacite lava flow (on northwest flank?).

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Page modified: March 30, 2017 14:36
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