Uksichan

sopka (bez známé erupce za posledních ~12 000 let), Russia, Northwestern Pacific Volcanic Regions

Kde

Russia, Northwestern Pacific Volcanic Regions

Typ (GVP)

Shield

Nadmořská výška

1 692 m

Poloha

56,080°, 158,380°

The large gently dipping shield-like Uksichan volcano covers 1,850 km2, and is the largest of the Sredinny Range with a 300 km3 volume. Several dacitic domes fill the 12-km-wide central caldera; the largest of these rises 900 m above the caldera floor to form the summit. Initial lava flows traveled up to 15-20 km, but later flows were thicker and more viscous. In contrast to the W and NW flanks, which consist exclusively of lava flows, the E and SE flanks contain substantial amounts of pyroclastic material. Cinder cones and small shields are located on the flanks. Early geological studies in the Sredinny Range (Ogorodov et al., 1972) assigned Holocene ages based on morphology, but later work noted that these volcanoes appear younger because they have less tephra cover than those in eastern Kamchatka. Researchers such as Ponomareva et al. (2007) do not consider this volcano to be Holocene.

Text: Smithsonian Global Volcanism Program.

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