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Griggs

Photo of this volcano
  • United States
  • Alaska
  • Stratovolcano
  • 1790 BCE
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 58.354°N
  • 155.092°W

  • 2317 m
    7602 ft

  • 312190
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Griggs.

The Global Volcanism Program has no Weekly Reports available for Griggs.

The Global Volcanism Program has no Bulletin Reports available for Griggs.

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Eruptive History

There is data available for 1 Holocene eruptive periods.

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1790 BCE ± 40 years Unknown Confirmed   Radiocarbon (corrected)
Deformation History

There is no Deformation History data available for Griggs.

Emission History

There is no Emissions History data available for Griggs.

Photo Gallery

Mount Griggs is the prominent stratovolcano at the upper left in this aerial view from the SW. The slopes of the volcano are heavily mantled with ash from the 1912 eruption of Novarupta volcano. The 1912 pyroclastic-fall deposits also mantle the irregular surface of Knife Creek Glacier, which flows from right to left behind the ridge in the lower right foreground.

Copyrighted photo by Katia and Maurice Krafft, 1978.
The snow-covered ridge at the right in this view from the south of Mount Griggs is the margin of a large, 1.5-km-wide breached crater formed during the early Holocene during collapse of the volcano's summit. Remnants of the resulting debris-avalanche deposit reach WSW across the valley to Broken Mountain. The young central cone on the center skyline filled the collapse amphitheater and displays nested craters.

Copyrighted photo by Katia and Maurice Krafft, 1978.
An aerial view from the east shows Mount Griggs in the foreground with the distal end of the Valley of Ten Thousand Smokes (VTTS) ash-flow deposit in the distance, forming the flat, light-colored valley floor at the upper left. The VTTS ash flow was erupted in 1912 from Novarupta volcano; it traveled 21 km to the location shown in this photo. Griggs volcano is the highest of a group of volcanoes in the Katmai area. Three concentric craters are breached to the SW, the largest of which was formed by edifice collapse during the early Holocene.

Copyrighted photo by Katia and Maurice Krafft, 1978.
Griggs is the highest of a group of volcanoes in the Katmai area. It lies 10 km behind the volcanic arc defined by other Katmai group volcanoes. Active fumarolic fields persist in a summit crater and along the upper SW flank. The flanks are heavily mantled by ash from the 1912 Novarupta eruption in this 1990 view from the SW.

Photo by Game McGimsey, 1990 (U.S. Geological Survey, Alaska Volcano Observatory).
Griggs, seen here from the west rim of Katmai caldera, lies west of a NE-trending arc of volcanoes cutting across Katmai National Park. Noisy fumarolic jets at the summit can be heard across long distances.

Photo by Game McGimsey (Alaska Volcano Observatory, U.S. Geological Survey).
Geologists walk toward Griggs volcano from the base of Knife Creek Glacier to its south. The relatively unmodified slopes reflect its largely Holocene age. Active fumarolic fields persist in a summit crater and along the upper SW flank. Loud fumarole jets can be heard from the valley floor. The flanks of Griggs and the surface of Knife Creek Glacier have thick ash deposits from the 1912 Novarupta eruption.

Photo by Game McGimsey (Alaska Volcano Observatory, U.S. Geological Survey).
GVP Map Holdings

The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included. The maps database originated over 30 years ago, but was only recently updated and connected to our main database. We welcome users to tell us if they see incorrect information or other problems with the maps; please use the Contact GVP link at the bottom of the page to send us email.


Title: Canada, United States
Publisher: DMA Aerospace Center
Country: United States, Canada
Year: 1989
Series: ONC
Map Type: Topographic
Scale: 1:1,000,000
Map of Canada, United States

Title: Quat Geol, Ugashik, Bristol Bay, & W Karluk Quads
Publisher: US Geological Survey
Country: United States
Year: 1987
Series: MI
Map Type: Geology
Scale: 1:250,000
Map of Quat Geol, Ugashik, Bristol Bay, & W Karluk Quads

Title: Kodiak
Publisher: US Department of Commerce, NOAA National Ocean Service
Country: United States
Year: 1987
Series: Sectional Aero Chart
Map Type: Topographic
Scale: 1:500,000
Map of Kodiak

Title: Mt Katmai & Portions of Afognak, Naknek Quads, Geo
Publisher: US Geological Survey
Country: United States
Year: 1987
Series: OFR
Map Type: Geology
Scale: 1:250,000
Map of Mt Katmai & Portions of Afognak, Naknek Quads, Geo

Title: Map Showing Distribution, Composition, and Age of Late Cenozoic Volcanic Craters in Alaska
Publisher: US Geological Survey
Country: United States
Year: 1986
Series: Misc Investigations
Map Type: Geology
Scale: 1:1,000,000
Map of Map Showing Distribution, Composition, and Age of Late Cenozoic Volcanic Craters in Alaska

Title: Map Showing Distribution, Composition, and Age of Late Cenozoic Volcanic Craters in Alaska
Publisher: US Geological Survey
Country: United States
Year: 1986
Series: Misc Investigations
Map Type: Geology
Scale: 1:1,000,000
Map of Map Showing Distribution, Composition, and Age of Late Cenozoic Volcanic Craters in Alaska

Title: Mt Katmai (A-4)
Publisher: US Geological Survey
Country: United States
Year: 1984
Series: 63,360 Topo
Map Type: Topographic
Scale: 1:63,360
Map of Mt Katmai (A-4)

Title: N Aleutian Basin, Gulf of AK
Publisher: USDI Minerals Management Service
Country: United States
Year: 1984
Series: OCSRM maps
Map Type: Bathymetric
Scale: 1:1,000,000
Map of N Aleutian Basin, Gulf of AK

Title: Jet Navigation Chart AK/ Canada
Publisher: DMA Aerospace Center
Country: United States, Canada
Year: 1983
Series: JNC
Map Type: Navigation
Scale: 1:2,000,000
Map of Jet Navigation Chart AK/ Canada

Title: Mt Katmai, Shelikof Strait
Publisher: US Department of Commerce, NOAA National Ocean Service
Country: United States
Year: 1983
Map Type: Bathymetric
Scale: 1:250,000
Map of Mt Katmai, Shelikof Strait

Title: Karluk, Shelikof Strait
Publisher: US Department of Commerce, NOAA National Ocean Service
Country: United States
Year: 1983
Map Type: Bathymetric
Scale: 1:250,000
Map of Karluk, Shelikof Strait

Title: (1) XSect AK Peninsula-Kodiak-Aleutian Trench
Publisher: GSA
Country: United States
Year: 1979
Series: MC
Map Type: Geology (Cross-Section)
Scale: 1:1,000,000
Map of (1) XSect AK Peninsula-Kodiak-Aleutian Trench

Title: (2) XSect AK Peninsula-Kodiak-Aleutian Trench
Publisher: GSA
Country: United States
Year: 1979
Series: MC
Map Type: Geology (Cross-Section)
Scale: 1:1,000,000
Map of (2) XSect AK Peninsula-Kodiak-Aleutian Trench

Title: Mt Katmai (A-3)
Publisher: US Geological Survey
Country: United States
Year: 1977
Series: 63,360 Topo
Map Type: Topographic
Scale: 1:63,360
Map of Mt Katmai (A-3)

Title: Mt Katmai Area, Geol Map & Structure Sections in
Publisher: US Geological Survey
Country: United States
Year: 1959
Series: B
Map Type: Geology
Scale: 1:250,000
Map of Mt Katmai Area, Geol Map & Structure Sections in

Title: Mt Katmai
Publisher: US Geological Survey
Country: United States
Year: 1951
Series: AK Topo 250
Map Type: Topographic
Scale: 1:250,000
Map of Mt Katmai
Smithsonian Sample Collections Database

There are no samples for Griggs in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

External Sites