Kaguyak Ignimbrite. thick indurated but not sintered ignimbrite includes several 2-3-m-thick LCZ's and one very thick (20.3 m) LCZ near top of ignimbrite ~2m ignimbrite overlies thick LCZ. Ignimbrite overlies what is probably the Big Breccia deposit. Exposed thickness 45-50 m. PCZ's; LCZ: 2 to 20 m. See text for MP and ML. Pumice clasts: pumices generally pale grey, with fewer dark blebs than most pumices at other locations. Lithic clasts: most lithics are andesite-dacite lavas; a minor subset have yellow-orange alteration rinds or films; basal 3-m of the thick LCZ includes ~30% yellow orange altered crystal-poor lava clasts with pyrite; this is the only LCZ zone seen
Kaguyak dome field and its Holocene caldera, Alaska Peninsula
This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G22AC00137
Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.