The Emperor Seamounts: Southward Motion of the Hawaiian Hotspot Plume in Earth's Mantle

  title={The Emperor Seamounts: Southward Motion of the Hawaiian Hotspot Plume in Earth's Mantle},
  author={John A. Tarduno and Robert A. Duncan and David W. Scholl and Rory D. Cottrell and Bernhard Steinberger and Thorvaldur Thordarson and Bryan C. Kerr and Clive R. Neal and Frederick A. Frey and Masayuki Torii and Claire Carvallo},
  pages={1064 - 1069}
The Hawaiian-Emperor hotspot track has a prominent bend, which has served as the basis for the theory that the Hawaiian hotspot, fixed in the deep mantle, traced a change in plate motion. However, paleomagnetic and radiometric age data from samples recovered by ocean drilling define an age-progressive paleolatitude history, indicating that the Emperor Seamount trend was principally formed by the rapid motion (over 40 millimeters per year) of the Hawaiian hotspot plume during Late Cretaceous to… 
The Bent Hawaiian-Emperor Hotspot Track: Inheriting the Mantle Wind
Inverse modeling suggests that although deep flow near the core-mantle boundary may have played a role in the Hawaiian-Emperor bend, capture of a plume by a ridge, followed by changes in sub-Pacific mantle flow, can better explain the observations.
The bend in the Hawaiian-Emperor volcanic chain is an often-cited example of a change in plate motion with respect to a stationary hotspot. Growing evidence, however, suggests that the bend might
Pacific plate motion change caused the Hawaiian-Emperor Bend
It is demonstrated that southward hotspot drift cannot be a sole or dominant mechanism for formation of the Hawaiian-Emperor Bend (HEB), which cannot be explained without invoking a prominent change in the direction of Pacific plate motion around 47 Ma.
50-Ma Initiation of Hawaiian-Emperor Bend Records Major Change in Pacific Plate Motion
New ages for volcanoes of the central and southern Emperor chain define large changes in volcanic migration rate with little associated change in the chain's trend, which suggests that the Hawaiian-Emperor bend did not form by slowing of the Hawaiian hot spot.
IODP expedition 330: Drilling the Louisville Seamount Trail in the SW Pacific
Abstract. Deep-Earth convection can be understood by studying hotspot volcanoes that form where mantle plumes rise up and intersect the lithosphere, the Earth's rigid outer layer. Hotspots
Hotspot motion caused the Hawaiian-Emperor Bend and LLSVPs are not fixed
New paleomagnetic data are presented to show that the great bend in the Hawaiian-Emperor seamount chain can be attributed to mantle plume motion and that LLSVPs are mobile.
Louisville Seamount Trail: implications for geodynamic mantle flow models and the geochemical evolution of primary hotspots
The Louisville Seamount Trail is a 4300 km long volcanic chain that has been built in the past 80 m.y. as the Pacific plate moved over a persistent mantle melting anomaly or hotspot. Because of its
Hot Times in Tectonophysics: Mantle Plume Dynamics and Magmatic Perturbances
Earth’s dynamic lithospheric (plate) motions often are not obvious when considered in relation to the temporal stability of the crust. Seismic radiology experiments confirm that the extreme pressures


Convection Plumes in the Lower Mantle
THE concept of crustal plate motion over mantle hotspots has been advanced1 to explain the origin of the Hawaiian and other island chains and the origin of the Walvis, Iceland-Farroe and other
Mesozoic plate-motion history below the northeast Pacific Ocean from seismic images of the subducted Farallon slab
A three-dimensional spherical computer model of mantle convection is used to show that seismic images of the subducted Farallon plate provide strong evidence for a Mesozoic period of low-angle subduction under North America.
Isotopic evidence for Late Cretaceous plume–ridge interaction at the Hawaiian hotspot
As the rising mantle plume encountered the hot, low-viscosity asthenosphere and hot, thin lithosphere near the spreading centre, it appears to have entrained enough of the isotopically depleted upper mantle to overwhelm the chemical characteristics of the plume itself, and the Hawaiian hotspot joins the growing list of hotspots that have interacted with a rift early in their history.
Plate motions in the North Pacific: The 43 Ma nonevent
The Hawaiian-Emperor seamount chain in the North Pacific Ocean is commonly considered to have been produced by motion of the Pacific plate over a hotspot. If the hotspot is assumed to have remained
Cenozoic magmatism throughout east Africa resulting from impact of a single plume
The geology of northern and central Africa is characterized by broad plateaux, narrower swells and volcanism occurring from ∼45 Myr ago to the present. The greatest magma volumes occur on the
Fast Paleogene Motion of the Pacific Hotspots from Revised Global Plate Circuit Constraints
Major improvements in Late Cretaceous-early Tertiary Pacific-Antarctica plate reconstructions, and new East-West Antarctica rotations, allow a more definitive test of the relative motion between
Relative motions of hotspots in the Pacific, Atlantic and Indian Oceans since late Cretaceous time
Combinations of global plate reconstructions reveal average velocities for the last 50 to 65 million years of 10 to 20 mm yr−1 between the Hawaiian hotspot and those beneath Iceland, Tristan da