Sand Mountain Vulkancinder cones 1664 m / 5,459 ft
Oregon, USA (mainland exept Alaska), 44.38°N / -121.93°W Aktueller Status: nicht aktiv (1 von 5)
Typische Aktivität: Explosiv
Ausbrüche des Sand Mountain: 70 AD ± 150, 800 BC ±300, 900 BC ± 100, 1740 BC ± 300, 2290 BC ± 300 (all radiocarbon dated) Sand Mountain Vulkan Fotos Letzte Erdbeben in der Nähe:
Beschreibung:Most of the 23 basaltic and basaltic-andesite cinder cones of Sand Mountain volcanic field are aligned along a N-S trending line immediately west of the Cascade crest NW of Mount Washington. A secondary trend of alignment in NNW and NNE direction intersects the N-S line near the largest cinder cone, Sand Mountain.Geologically young lava flows from vents on the western side were erupted between 3000-4000 years ago. The lava flows traveled mostly to the west, blocking local drainages and forming several small lakes. Source: GVP Sand Mountain Fotos: |
|