Thielsen

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

Nadmořská výška

2 799 m

Poloha

43,153°, -122,065°

The eroded central plug of Mount Thielsen forms a prominent summit spire known as the "Lightning Rod of the Cascades." The heavily eroded volcano is Potassium-Argon dated about 0.29 million years ago (Sherrod, in Wood and Kienle 1990). Pre-Thielsen shield volcanoes lie to the east and NE and pyroclastic cones to the south and SW.

Text: Smithsonian Global Volcanism Program.

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