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The classic “overturned soup bowl”
profile of Galapagos volcanoes is well displayed by this early morning
photo of Fernandina Island’s SW coastline. This particular
type of volcanic profile is probably due to the fact that the volcanoes,
once they emerge above sea level do not appear to have linear subaerial
rift zones, like the volcanoes in Hawaii. Instead, they have radial
rift zones, which form a bull’s eye pattern around the volcano.
Eruptions along the radial rifts build up the slope concentrically
around the center of the island and help build up the steep slope
that marks the “bowl” part of the profile.
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