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Lassen Volcanic

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Lassen Volcanic. Slab window. Slab windows. Lassen Volcanic. Slab Window. Dacite dome. Lassen Peak. Chaos Crags. Former location of Mt. Tehama. Brokeoff Mountain (Mt. Tehama remnant). More remnants of Mt. Tehama. Mount Dillar. Pilot Pinnacle. History.

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slide9

Lassen Volcanic

Slab Window

slide12

Lassen Peak

Chaos Crags

slide15

More remnants of Mt. Tehama

Mount Dillar

Pilot Pinnacle

slide19

History

  • Mt Tehama composite volcano built 600,000 to 400,000 years ago
  • Mt Tehama collapse(?) and erosion
  • Domes, glaciers and more domes
  • Most recent activity 1914-1921
slide20

PROJECTED HEIGHT OF MT TEHAMA

MOUNT LASSEN

BROKEOFF MOUNTAIN

slide21

History

  • Mt Tehama composite volcano built 600,000 to 400,000 years ago
  • Mt Tehama collapse(?) and erosion
  • Domes, glaciers and more domes
  • Most recent activity 1914-1917
slide22

The great dacite dome of Lassen Peak

25,000 - 31,000 years old

slide28

Lassen Peak

Chaos Crags

slide29

Lassen Peak

Chaos Crags

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