Antretter, Maria et al. (2004): Modelled palaeolatitudes for the Louisville hot spot and the Ontong Java Plateau

Leg/Site/Hole:
ODP 192
Identifier:
2006-012369
georefid
Creator:
Antretter, Maria
University of Munich, Department of Earth and Environmental Sciences, Munich, Federal Republic of Germany
author
Riisager, Peter
University of Hawaii, United States
author
Hall, Stuart
University of Oregon, United States
author
Zhao, Xixi
University of Leicester, United Kingdom
author
Steinberger, Bernhard
Danish Lithosphere Centre, Denmark
author
Identification:
Modelled palaeolatitudes for the Louisville hot spot and the Ontong Java Plateau
2004
In: Fitton, J. Godfrey (editor), Mahoney, John J. (editor), Wallace, Paul J. (editor), Saunders, Andrew D. (editor), Origin and evolution of the Ontong Java Plateau
Geological Society of London, London, United Kingdom
229
21-30
Formation of the Ontong Java Plateau (OJP), a large igneous province in the western Pacific, has been attributed to a rising plume head in the initial stage of the Louisville hot spot, approximately 120-125 Ma ago. However, the Neal et al. plate reconstruction suggests that the plateau formed approximately 9 degrees North of the current location of this hot spot at 51 degrees S. The magnetization of the plateau's basement records a palaeo-latitude of approximately 25 degrees S which further increases the discrepancy with the plume head model. Modelling the motion of the Louisville hot spot for the last 120 Ma yields a possible southward motion of up to about 6 degrees . True polar wander (TPW) models also shift the predicted palaeolatitudes of the plateau farther north. Taking into account both hot-spot motion and TPW, formation of the OJP by the Louisville hot spot remains a possibility.
English
Serial
Coverage:Geographic coordinates:
North:1.0000
West:157.0000East: 164.3000
South:-5.0100
Solid-earth geophysics; basalts; basement; Cretaceous; East Pacific; hot spots; igneous rocks; Leg 192; lithosphere; Louisville Hot Spot; Louisville Ridge; magnetization; mantle; mantle plumes; Mesozoic; models; movement; Ocean Drilling Program; Ontong Java Plateau; orientation; Pacific Ocean; paleogeography; paleomagnetism; plate boundaries; plate tectonics; plumes; polar wandering; pole positions; South Pacific; Southeast Pacific; velocity; viscosity; volcanic rocks; West Pacific;
.