Santa Clara

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

Kde

United States, North America Volcanic Regions

Typ (GVP)

Volcanic field

Nadmořská výška

1 465 m

Poloha

37,257°, -113,625°

A Pliocene-to-Quaternary volcanic field north of St. George in SW Utah contains numerous cinder cones and lava flows. The Santa Clara lava flow, originating from two youthful-looking cinder cones above Snow Canyon, is one of many young late-Quaternary lava flows in the Colorado Plateau/Basin and Range region. The sparsely vegetated flow traveled 16 km S down Snow Canyon, excavated through rocks of the colorful Navajo Sandstone. Estimates of the age of the Santa Clara flow have ranged widely from as young as about 1000 years. Sands beneath the flow, however, were dated by optically stimulated luminescence at about 40,000 years, and charcoal just underneath the flow at the same location was radiocarbon dated at about 27,270 +/- 250 yrs BP (Biek et al., 2010). Older Snow Canyon flows of two generations now cap mesa tops as a result of topographic inversion.

Text: Smithsonian Global Volcanism Program.

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