12-07-2013, 05:07 AM
piqued my interest:
Until 1970, L#333;#699;ihi was thought to be an inactive volcano that had been transported to its current location by sea-floor spreading. The seafloor under Hawai#699;i is 80–100 million years old and was created at the East Pacific Rise, an oceanic spreading center where new sea floor forms from magma that erupts from the mantle. New oceanic crust moves away from the spreading center. Over a period of 80–100 million years, the sea floor under Hawai#699;i moved from the East Pacific Rise to its present location 6,000 km (4,000 mi) west, carrying ancient seamounts with it. When scientists investigated a series of earthquakes off Hawai#699;i in 1970, they discovered that L#333;#699;ihi was an active member of the Hawaiian-Emperor seamount chain. The age pattern of L#333;#699;ihi's summit craters confirms that volcanism at L#333;#699;ihi has slowly been moving east as L#333;#699;ihi moves away from its origins over the Hawai#699;i hotspot
80 -100 million years
http://en.wikipedia.org/wiki/L%C5%8D%CA%BBihi_Seamount
Until 1970, L#333;#699;ihi was thought to be an inactive volcano that had been transported to its current location by sea-floor spreading. The seafloor under Hawai#699;i is 80–100 million years old and was created at the East Pacific Rise, an oceanic spreading center where new sea floor forms from magma that erupts from the mantle. New oceanic crust moves away from the spreading center. Over a period of 80–100 million years, the sea floor under Hawai#699;i moved from the East Pacific Rise to its present location 6,000 km (4,000 mi) west, carrying ancient seamounts with it. When scientists investigated a series of earthquakes off Hawai#699;i in 1970, they discovered that L#333;#699;ihi was an active member of the Hawaiian-Emperor seamount chain. The age pattern of L#333;#699;ihi's summit craters confirms that volcanism at L#333;#699;ihi has slowly been moving east as L#333;#699;ihi moves away from its origins over the Hawai#699;i hotspot
80 -100 million years
http://en.wikipedia.org/wiki/L%C5%8D%CA%BBihi_Seamount