Three Fingered Jack

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Coordinates: 44°28′41″N 121°50′43″W / 44.4781743, -121.8453392

Three Fingered Jack

View of Three Fingered Jack from Hogg Rock
Elevation 7,844 feet (2,391 m)[1]
Location Oregon, USA
Range Cascades
Prominence 2,481 feet (756 m)[2]
Coordinates 44°28′41″N 121°50′43″W / 44.4781743, -121.8453392[3]
Topo map USGS Three Fingered Jack
Type Shield volcano
Volcanic arc/belt Cascade Volcanic Arc
Age of rock older than 200,000 years

Three Fingered Jack, named for its distinctive shape, is a Pleistocene volcano in the Cascade Range of Oregon. It is a deeply glaciated shield volcano and consists mainly of basaltic andesite lava.[4]

[edit] References

  1. ^ NGS Data Sheet for THREE FINGERED JACK=HAYRICK. U.S. National Geodetic Survey. Retrieved on 2008-04-02.
  2. ^ Three Fingered Jack, Oregon. Peakbagger.com. Retrieved on 2008-04-02.
  3. ^ USGS GNIS: Three Fingered Jack. Retrieved on 2008-04-02.
  4. ^ Cascade Range Volcanoes Summaries. USGS Cascades Volcano Observatory. Retrieved on 2008-04-01.
  • Harris, Stephen L. (2005). Fire Mountains of the West, 3rd edition, Missoula, Montana: Mountain Press Publishing Company. ISBN 0-87842-511-X. 

[edit] Maps

Map of Three Fingered Jack.

Map of Three Fingered Jack and Surrounding Area.
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Volcanoes of Oregon
High Cascades
Western Cascades
Eastern Cascades
Basin and Range
Columbia Plateau
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