Mount Katmai
Mount Katmai is one of five vents encircling the Novarupta volcano, source of the VEI 6 eruption and associated voluminous pyroclastic flows in 1912.Katmai consists chiefly of lava flows, pyroclastic rocks, and non-welded to agglutinated air fall.Katmai volcano is built on the sedimentary rocks of the Naknek Formation of Late Jurassic age, which are exposed just west of the caldera rim at an elevation of about 5,000 feet (1,520 m), as well as north and southeast of the crater.Early United States Coast and Geodetic Survey maps suggest a pre-caldera summit elevation of about 7,500 ft (2,300 m), and local villagers reported in 1898 that one of the volcanoes in the general area "smoked" occasionally.The inhabitants of the town of Kodiak, with ash falling on them, were led to the United States Revenue Cutter Service revenue cutter USRC Manning where they sheltered and were cared for by the crew, remaining in the harbor because Captain Perry determined "an attempt to leave here would be unwise" because the eruption made navigation dangerous.
ElevationProminenceCoordinatesKatmai National Park and PreserveAlaskaParent rangeAleutian RangeTopo mapMountain typeStratovolcanoVolcanic arcAleutian ArcLast eruptionEasiest routeRussianAlaska PeninsulacalderaNovaruptacrater lakeKodiak Island BoroughLake and Peninsula Boroughpyroclastic flowsglaciersJurassicUnited States Coast and Geodetic SurveyNovarupta VolcanotephraKodiakUnited States Revenue Cutter Servicerevenue cutterUSRC Manningdaciticlava domephreatic eruptionsfumarolesValley of Ten Thousand Smokesmud potsPumiceNaknek LakeList of volcanoes in the United StatesBibcodeGlobal Volcanism ProgramSmithsonian InstitutionCambridge University Press