8. What does the bend in the chain of seamounts
Though we've been focused only on the Pacific Plate,
interactions among all the plates affect one another.
A plate tectonic "traffic jam" in one part of the world,
like a subduction zone that becomes the site of a continent-continent
collision, could change the dynamics of plate motion
all over the planet.
to see an animation of continental locations over the
past 150 million years. Step through the animation to
observe the changes in plate motion that began around
40 million years ago. Look for an event that disrupted
plate motions because continents could no longer move
in the direction and speed they once maintained.
9. What global tectonic event might have
been responsible for changing the direction of the Pacific
Plate's motion? (What major tectonic event occurred
around 40 million years ago?)