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This data lists the historically active volcanoes of Alaska and the year of the last major eruptive event. The volcanoes listed meet at least one of the following criteria since 1700 CE: (1) documented, unquestioned eruption, or (2) a strongly suspected eruption, often an eruption documented in the historical account with very little information (current geologic knowledge must not contradict the eruption account), or (3) persistent (usually on the order of decades, but certainly longer than several months) fumaroles, with temperatures (where measured) within ~10 degrees C of the boiling point, or (4) significant, measured, volcanic-related, non-eruptive deformation, (5) documented earthquake swarm with strongly...
Tags: Active Volcanoes,
Alaska Peninsula,
Alaska Statewide Maps,
Alaska, State of,
Aleutian Arc, All tags...
Aleutian Islands,
Coastal and River,
Coastal and River Hazards,
Geologic Hazards,
Geology,
Hazards,
Historic Eruption,
Volcanic,
Volcanic Eruption,
Volcano Hazards,
Volcanoes,
Volcanology,
geoscientificInformation, Fewer tags
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Kasatochi is a small, isolated island volcano in the center of the Aleutian Island chain. It consists of a roughly circular cone approximately 3 km in diameter with a lake-filled central crater that is 1.2 km in diameter and extends from the highest point on the island to sea level. The oldest unit recognized is a thick series of mid-Pleistocene glaciovolcanic deposits consisting of autobrecciated lava, lahars, and volumetrically minor lava masses that we believe to have been emplaced underneath a regional ice cap. This unit is unconformably overlain by several massive Holocene lavas, above which lies a thick sequence of latest-Holocene pyroclastic deposits likely deposited during the crater-forming eruption. The...
Tags: Active Volcanoes,
Age Dates,
Aleutian Arc,
Aleutian Islands,
Alluvial Deposits, All tags...
Analyses,
Analyses and Sampling,
Basalt,
Bedrock,
Bedrock Geology,
Caldera,
Chemistry,
Colluvium,
Erosion,
Fan,
Geochemical Data,
Geochemistry,
Geochronology,
Geologic,
Geologic Hazards,
Geologic Map,
Geological Process,
Geology,
Geomorphology,
Hazards,
Historic Eruption,
Igneous,
Kasatochi,
Lava Flow,
Mineralogy,
Petrographic,
Petrography,
Petrology,
Pumice,
Pyroclastics,
Rockfall,
Rocks,
Sample Location,
Slope Instability,
Slump,
Soils,
Surface,
Surficial,
Talus,
Tephra,
Topography,
Ultramafic,
Uplift,
Volcanic,
Volcanic Ash,
Volcanic Eruption,
Volcanic Rocks,
Volcaniclastics,
Volcanoes,
Volcanology,
geoscientificInformation, Fewer tags
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This data lists the historically active volcanoes of Alaska, their location in latitude/longitude decimal degrees, and the year of the last major eruptive event. The 52 volcanoes listed meet at least one of the following criteria since 1700 CE: (1) documented, unquestioned eruption, or (2) a strongly suspected eruption, often an eruption documented in the historical account with very little information (current geologic knowledge must not contradict the eruption account), or (3) persistent (usually on the order of decades, but certainly longer than several months) fumaroles, with temperatures (where measured) within ~10°C of the boiling point, or (4) significant, measured, volcanic-related, non-eruptive deformation,...
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The Alaska Volcano Observatory (AVO) uses an informal set of names for about 140 'volcanoes.' Some names refer to large, complex volcanic centers, while others indicate only a specific cone. This publication expands the list of 140 named volcanoes to include all volcanic vents where magma has reached the surface over the past 2.6 million years. This database of all known (published, or unpublished with permission) Quaternary volcanic vents was developed to better describe the nature and character of Quaternary volcanism in Alaska and specifically to aid in the discussion of spatial and temporal patterns of Alaska volcanism. This list is a preliminary starting point, and we hope that it is updated and expanded by...
Tags: Adak Quadrangle,
Alaska Peninsula,
Aleutian Islands,
Amukta Quadrangle,
Atka Quadrangle, All tags...
Baird Inlet Quadrangle,
Bendeleben Quadrangle,
Candle Quadrangle,
Chignik Quadrangle,
Cold Bay Quadrangle,
Cook Inlet,
Craig Quadrangle,
Fairbanks Quadrangle,
False Pass Quadrangle,
Gareloi Island Quadrangle,
Goodnews Bay Quadrangle,
Gulkana Quadrangle,
Hazards,
Healy Quadrangle,
Hooper Bay Quadrangle,
Iliamna Quadrangle,
Karluk Quadrangle,
Kenai Quadrangle,
Ketchikan Quadrangle,
Kiska Quadrangle,
Kotzebue Quadrangle,
Kwiguk Quadrangle,
Lake Clark Quadrangle,
Marshall Quadrangle,
McCarthy Quadrangle,
Mount Katmai Quadrangle,
Nabesna Quadrangle,
Naknek Quadrangle,
Nunivak Island Quadrangle,
Petersburg Quadrangle,
Port Moller Quadrangle,
Pribilof Islands Quadrangle,
Rat Islands Quadrangle,
Saint Lawrence Quadrangle,
Saint Michael Quadrangle,
Samalga Island Quadrangle,
Seguam Quadrangle,
Selawik Quadrangle,
Seward Peninsula,
Sitka Quadrangle,
Southeast Alaska,
Stepovak Bay Quadrangle,
Sutwik Island Quadrangle,
Tanacross Quadrangle,
Tyonek Quadrangle,
Ugashik Quadrangle,
Umnak Quadrangle,
Unalakleet Quadrangle,
Unalaska Quadrangle,
Unimak Quadrangle,
Valdez Quadrangle,
Volcanic Eruption,
Volcanoes,
Volcanology,
Wrangell Mountains,
geoscientificInformation, Fewer tags
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This publication provides digital point data for the locations of 127 volcanic centers in Alaska younger than 2 million years. Information about whether a volcano has been historically active is also provided. Detailed information about each center can be found on the Alaska Volcano Observatory website at http://www.avo.alaska.edu
Tags: Active Volcanoes,
Akutan,
Amchixtam Chaxsxii,
Atka,
Basalt of Gertrude Creek, All tags...
Black Peak,
Buzzard Creek,
Cone 3110,
Cone 3601,
Devils Desk,
Double Glacier,
Douglas,
Duncan Canal,
Dutton,
Emmons Lake,
Espenberg,
Folsoms Bluff,
Gordon,
Iliamna,
Imuruk Lake,
Ingakslugwat Hills,
Iron Trig Cone,
Kaguyak,
Knob 1000,
Kochilagok Hill,
Kookooligit Mountains,
Kukak,
Kupreanof,
Makushin,
Martin,
Nelson Island,
Novarupta,
Nunivak Island,
Pavlof,
Pavlof Sister,
Porcupine,
Prindle Volcano,
Rainbow River Cone,
Skookum Creek,
Tanada Peak,
Teller Basalt Field,
Togiak Volcanics,
Unnamed 1 (near Kupreanof),
Unnamed 2 (near Ukinrek Maars),
Volcano 1 near Kupreanof,
Volcano 2 near Kupreanof,
Volcano 4 near Kupreanof,
Volcanoes,
Wrangell,
geoscientificInformation, Fewer tags
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