On the motion of Hawaii and other mantle plumes

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doi: 10.1016/j.chemgeo.2007.01.021
Author(s): Tarduno, John A.
Author Affiliation(s): Primary:
University of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States
Other:
Cardiff University, United Kingdom
Volume Title: Great plume debate; testing the plume theory
Volume Author(s): Campbell, Ian H., editor; Kerr, Andrew C.
Source: The great plume debate; testing the plume theory, edited by Ian H. Campbell and Andrew C. Kerr. Chemical Geology, 241(3-4), p.234-247. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0009-2541 CODEN: CHGEAD
Note: In English. 71 refs.; illus., incl. sketch maps
Summary: The Hawaiian hotspot, and its prominent bend at 47 Ma, have figured prominently in the development of ideas on the nature of mantle plumes and plate motion. Here I review paleomagnetic analyses associated with Ocean Drilling Program (ODP Leg 197) which, together with studies of plate circuits and geodynamic modeling results, indicate southward motion of the Hawaiian hotspot during formation of the Emperor Seamounts. These analyses confirm the long-posited idea that mantle plumes should be influenced by mantle flow. Moreover, these results indicate that Late Cretaceous-early Paleogene hotspot motion was the dominant factor in forming the Emperor track and thus the famous bend morphology. An important corollary of this finding on hotspot motion is that long-term polar wander of Earth, which has been inaccurately assessed by viewing paleomagnetic data in a fixed hotspot reference frame, has been far less than previously thought. Salient points for future research raised by the ODP Leg 197 paleomagnetic results include the scale of mantle flow recorded by hotspot track segments and the underlying processes that cause track segments to be dominated by mantle flow rather than plate motion for given time intervals. Abstract Copyright (2007) Elsevier, B.V.
Year of Publication: 2007
Research Program: ODP Ocean Drilling Program
Key Words: 18 Geophysics, Solid-Earth; Cenozoic; Cretaceous; Displacements; East Pacific Ocean Islands; Emperor Seamounts; Hawaii; Hawaiian Plume; Hot spots; Koko Seamount; Leg 145; Leg 197; Lower Cretaceous; Lower Paleogene; Magmatism; Mantle; Mantle plumes; Mesozoic; Movement; Nintoku Seamount; North Pacific; Northwest Pacific; ODP Site 883; Ocean Drilling Program; Oceania; Pacific Ocean; Paleogene; Paleomagnetism; Plate tectonics; Polar wandering; Polynesia; Suiko Seamount; Tertiary; United States; Volcanism; West Pacific
Coordinates: N340000 N520000 E1730000 E1670000
N511155 N511155 E1674607 E1674607
Record ID: 2007114068
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands