Three Fingered Jack

sopka (bez známé erupce za posledních ~12 000 let), United States, North America Volcanic Regions

Kde

United States, North America Volcanic Regions

Typ (GVP)

Shield(s)

Nadmořská výška

2 390 m

Poloha

44,480°, -121,842°

Three Fingered Jack is a distinctive deeply eroded basaltic andesite shield volcano that forms the highest peak between Mt. Jefferson and the Three Sisters. A pyroclastic cone buttressed by radial dikes forms its sharp-ridged summit. Other Pleistocene shield volcanoes and cinder cones are found to the NW and SW, and Hogg Rock Butte near Santiam Pass is a tuya formed during subglacial eruptions. The Maxwell Butte shield volcano to the SW is less eroded, and erupted between about 80,000 and 40,000 years before present.

Text: Smithsonian Global Volcanism Program.

Údaje o sopce: Smithsonian Global Volcanism Program. Další sopky a průduchy.