Sanford

Photo of this volcano
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  • United States
  • Alaska
  • Shield
  • Unknown - Uncertain Evidence
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 62.22°N
  • 144.13°W

  • 4949 m
    16233 ft

  • 315010
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Sanford.

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

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

Massive dissected Mount Sanford shield volcano is one of the highest Quaternary volcanoes in the United States. The 4949-m-high, glacier-covered andesitic volcano towers above the Copper River and has a broad, bulbous top that is surrounded by massive, glacially excavated cirques, most prominent on the SW and SE sides of the summit. The upper part of this little-studied, ice-covered volcano is possibly of Holocene age (Richter, in Wood and Kienle, 1990) and developed on a base of three coalescing andesitic shield volcanoes south, NW and NNW of the summit that began to form about 900,000 years ago. A massive mid-Pleistocene rhyolitic lava flow from a NE-flank vent traveled more than 18 km to the NE. Basaltic lava flows that were erupted from a NE-flank rift zone about 320,000 years ago mark the latest radiometrically dated activity from Mount Sanford.

The Global Volcanism Program is not aware of any Holocene eruptions from Sanford. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Sanford page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

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.



Synonyms
Hwniindi K'elt'aeni
This view, across the Copper River to the SE, shows 4949-m-high Mount Sanford (left) and 4317-m-high Mount Wrangell (right), two massive andesitic shield volcanoes. The dissected Sanford shield volcano has a broad, bulbous top that is surrounded by steep-walled glacial cirques. Most of the volcano formed in the Pleistocene, but part of the summit region may be of Holocene age. Eruptive activity at the younger, less-dissected Wrangell volcano has continued into historical time.

Photo by Donald Richter (Alaska Volcano Observatory, U.S. Geological Survey).

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Mendenhall W C, 1905. Geology of the central Copper River region, Alaska.. U S Geol Surv Prof Pap, 41: 54-62.

Richter D H, Rosenkrans D S, Steigerwald M J, 1995. Guide to the volcanoes of the western Wrangell Mountains, Alaska--Wrangell-St. Elias National Park and Preserve. U S Geol Surv Bull, 2072: 1-31.

Winkler G R, 2000. A geologic guide to Wrangell--Saint Elias National Park and Preserve, Alaska. U S Geol Surv Prof Pap, 1616: 1-166.

Wood C A, Kienle J (eds), 1990. Volcanoes of North America. Cambridge, England: Cambridge Univ Press, 354 p.

Volcano Types

Shield

Tectonic Setting

Intraplate
Continental crust (> 25 km)

Rock Types

Major
Andesite / Basaltic Andesite
Basalt / Picro-Basalt
Minor
Dacite
Rhyolite

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
0
0
0
1,880

Affiliated Databases

Large Eruptions of Sanford Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.