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Neptune description and information


Most Recent Activity:
Seismically Monitored: No
Elevation: 2234 ft (681 m)
Latitude: 54.737085° N
Longitude:164.485754° W
CAVW Number:
Nearby towns:False Pass 44 mi (70 km) NE
Akutan 66 mi (107 km) SW
Pauloff Harbor 74 mi (119 km) SE
Cold Bay 77 mi (123 km) NE
Anchorage 695 mi (1118 km) NE
From Stelling and others, 2005 [1]: "An isolated polygenetic stratocone outside the caldera to the northwest, here named Neptune Cone ("NC") lacks deposits from the caldera-forming eruption, suggesting a Holocene age. The most recent eruption from this cone was a fissure eruption that produced a ~4 km-long linear ridge of basaltic (49 wt.% SiO2, Mg#=0.57), scoria and spatter, extending to the north of the cone ("arm" extending from Neptune Cone)."
Eruptive history of Fisher Caldera, Alaska, USA, 2005
citation imageStelling, P., Gardner, J. E., and Beget, J., 2005, Eruptive history of Fisher Caldera, Alaska, USA: Journal of Volcanology and Geothermal Research, v. 139, no. 3-4, p. 163-183.

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Page modified: September 29, 2020 12:19
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