Large-scale motion between Pacific and Atlantic hotspots

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doi: 10.1038/378477a0
Author(s): Tarduno, John A.; Gee, Jeff
Author Affiliation(s): Primary:
University of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States
Other:
Scripps Institution of Oceanography, United States
Volume Title: Nature (London)
Source: Nature (London), 378(6556), p.477-480. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836 CODEN: NATUAS
Note: In English. 39 refs.; illus., incl. sketch maps
Summary: Problems of determining true polar wander (TPW), the rotation of the solid Earth with respect to the spin axis, are briefly discussed. Deducing relative plate motions becomes increasingly difficult for periods prior to the Tertiary. A more direct approach to the problem, using palaeolatitudes derived from Pacific guyots, provides data suggesting that only minor latitudinal shifts of Pacific hotspots occurred during the Cretaceous. Instead of TPW, relative motion between the Atlantic and Pacific hotspot groups is required at a velocity of 30 mm/yr, which is more than 50% larger than previously suggested.
Year of Publication: 1995
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; 18 Geophysics, Solid-Earth; Atlantic Ocean; Basalts; Cretaceous; Hot spots; Igneous rocks; Leg 143; Leg 144; Mesozoic; Movement; ODP Site 866; ODP Site 878; Ocean Drilling Program; Pacific Ocean; Paleolatitude; Paleomagnetism; Plate tectonics; Polar wandering; Seamounts; Volcanic rocks
Coordinates: N053325 N183835 E1722040 E1562130
Record ID: 1996004765
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom