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Mono Lake Volcanic Field

Campo vulcanico · United States · 2121 m

Negit (right-center) and Paoha (far right) islands in Mono Lake are seen from Black Point, a basaltic cone on the NW shore of the lake. The most recent eruptive activity from the Mono Lakes volcanic field took place 100-230 years ago, when lake-bottom sediments forming much of Paoha Island were uplifted by intrusion of a rhyolitic cryptodome. Black Point is an initially sublacustral cone that formed about 13,300 years ago when the lake was higher. The White Mountains form the far right horizon.
Negit (right-center) and Paoha (far right) islands in Mono Lake are seen from Black Point, a basaltic cone on the NW shore of the lake. The most recent eruptive activity from the Mono Lakes volcanic field took place 100-230 years ago, when lake-bottom sediments forming much of Paoha Island were uplifted by intrusion of a rhyolitic cryptodome. Black Point is an initially sublacustral cone that formed about 13,300 years ago when the lake was higher. The White Mountains form the far right horizon. · Foto: Photo by Lee Siebert, 1997 (Smithsonian Institution). · Wikimedia Commons
Tipo
Campo vulcanico
Paese
United States
Regione
North America Volcanic Regions / Basin and Range Volcanic Province
Altitudine
2121 m
Coordinate
38.000, -119.030
Ultima eruzione
1790
Contesto tettonico
Rift zone / Continental crust (> 25 km)
Forma vulcanica
Cluster
Roccia principale
Dacite
Sintesi geologica

The Mono Lake volcanic field east of Yosemite National Park and north of the Mono Craters consists of vents within Mono Lake and on its north shore. The most topographically prominent feature, Black Point, is an initially sublacustral basaltic cone that rises above the NW shore and was formed about 13,300 years ago when Mono Lake was higher. Holocene rhyodacitic lava domes and flows form Negit and parts of Paoha islands off the northern shore and center of the lake, respectively. The most recent eruptive activity in the Long Valley to Mono Lake region took place 100-230 years ago, when lake-bottom sediments forming much of Paoha Island were uplifted by intrusion of a rhyolitic cryptodome (Stine, in Bailey et al., 1989). Spectacular tufa towers line the shores of Mono Lake.

Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
350~504 · 1 eruzioni · VEI max. ?1120~1274 · 1 eruzioni · VEI max. ?1428~1582 · 1 eruzioni · VEI max. ?1736~1890 · 2 eruzioni · VEI max. ?350658112014281736

Cronologia dettagliata

  1. 1890VEI ?Stima geologica
    1890-08-23 – 1890-08-23
  2. 1790 (±75 anni)VEI ?Stima geologica
    1790 – In corso
    Paoha Island
  3. 1550 (±300 anni)VEI ?Stima geologica
    1550 – In corso
    Negit Island
  4. 1150 (±200 anni)VEI ?Stima geologica
    1150 – In corso
    Paoha Island
  5. 350 (±100 anni)VEI ?Stima geologica
    350 – In corso

Link esterni

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