Late Cretaceous Polar Wander of the Pacific Plate: Evidence of a Rapid True Polar Wander Event

Other

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

25

Scientific paper

We reexamined the Late Cretaceous-early Tertiary apparent polar wander path for the Pacific plate using 27 paleomagnetic poles from seamounts dated by 40Ar/39Ar geochronology. The path shows little motion from 120 to 90 million years ago (Ma), northward motion from 79 to 39 Ma, and two groups of poles separated by 16 to 21 degrees with indistinguishable mean ages of 84 +/- 2 Ma. The latter phenomenon may represent a rapid polar wander episode (3 to 10 degrees per million years) whose timing is not adequately resolved with existing data. Similar features in other polar wander paths imply that the event was a rapid shift of the spin axis relative to the mantle (true polar wander), which may have been related to global changes in plate motion, large igneous province eruptions, and a shift in magnetic field polarity state.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Late Cretaceous Polar Wander of the Pacific Plate: Evidence of a Rapid True Polar Wander Event does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Late Cretaceous Polar Wander of the Pacific Plate: Evidence of a Rapid True Polar Wander Event, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Late Cretaceous Polar Wander of the Pacific Plate: Evidence of a Rapid True Polar Wander Event will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-811110

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.