Big Bunchgrass

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

Kde

United States, North America Volcanic Regions

Typ (GVP)

Pyroclastic cone

Nadmořská výška

2 024 m

Poloha

42,703°, -122,194°

The basaltic Big Bunchgrass pyroclastic cone was considered to be of Holocene age (Sarna-Wojcicki et al. 1983, Smith 1988). The age assignment of Smith was based on lack of observation of Mazama tephra at Big Bunchgrass, but Sherrod (1995 pers. comm.) has found overlying Mazama tephra, and considers Big Bunchgrass to be substantially older than Holocene based on degree of erosion.

Text: Smithsonian Global Volcanism Program.

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