The Hawaiian mantle plume has created a chain of volcanic islands and seamounts (known as the Hawaiian-Emperor chain) thousands of kilometers long over the past 80 million years.
(The Hawaiian mantle plume; has created; a chain of volcanic islands and seamounts (known as the Hawaiian-Emperor chain) thousands of kilometers long over the past 80 million years) (a chain of volcanic islands and seamounts; known; as the Hawaiian-Emperor chain)
The Hawaiian mantle plume a chain of volcanic islands and seamounts
has created known
a chain of volcanic islands and seamounts (known as the Hawaiian-Emperor chain) thousands of kilometers long over the past 80 million years
as the Hawaiian-Emperor chain