John Seach, Volcano Live

 Colahan Seamount - John Seach

Colahan Seamount is located at the middle of the Hawaiian-Emperor volcanic chain.
Samples of transitional basalt, tephrite, and hawaiite have been sampled at Colahan Seamount.

Eruptions of Colahan Seamount
37-40 million years ago
 

Colahan Seamount
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