The eastern sector of the Bering Sea Volcanic Province, Alaska, consists of a
number of large late Cenozoic volcanic fields that occur in a broad region inboard
from the Aleutian arc front to the Arctic Circle. We estimate that about 750 km3
of magma were erupted in the volcanic centers that we have studied, all within the
past 6.0 Ma. Several discrete eruption episodes have been identified with
the new 40Ar/39Ar data at circa 6.0 Ma (Imuruk volcanic field), circa 3.5 Ma
(Teller volcanic field), circa 2.5-1.5 Ma (St. George Island), circa 1.0 Ma (St.
Lawrence Island), and the youngest activity which started at circa 0.7 Ma and
continued throughout region until historic times.
Mukasa, S.B., Andronikov, A.V., and Hall, C.M., 2007, The (super 40) Ar/ (Super 39) Ar chronology and eruption rates of Cenozoic volcanism in the eastern Bering Sea Volcanic Province, Alaska: Journal of Geophysical Research, v. 112, 18 p., doi: 10.1029/2006JB004452, 2007.
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