HR: 1340h
AN: U13A-0864 [WITHDRAWN]    [Abstracts]
TI: A Hypothesis Explaining The Dynamics Of Plate Tectonics
AU: * Cetin, H
EM: Haluk.Cetin@MurrayState.edu
AF: Murray State University, Department of Geosciences 104A Wilson Hall, Murray, KY 42071, United States
AU: Ozkirim, F
EM: fugen@resmar.net
AF: ResMar, PO Box 641, Murray, KY 42071, United States
AB: Since the introduction of the plate tectonics theory, one of the unsolved fundamental problems has been the understanding of how and when plate tectonics began, as well as initial dynamics of plate tectonics although several mechanisms have been suggested (i.e. the hypothesis that asthenospheric convections drive plates, which is not supported by modern geodynamic theories). The kinematics behind the subduction zones and sea- floor spreading have been well understood and well described by the theory of plate tectonics. However, there is no consensus on the main driving mechanism for the plate tectonics and how it began. We are proposing a hypothesis that attempts to explain several fundamental questions: (1) Why is the planet Earth unique among the silicate planets of the solar system in terms of plate tectonics?; (2) How did plate tectonics start?; (3) What did drive the lithospheric plates in the first place?; (4) Why do mantle plumes form? What kinds of forces are responsible for the plumes?; (5) Why is the outer core fluid?; (6) Why do "ultra-low seismic velocity zones" exist at the base of the mantle?; and (7) Why does the magnetic field of Earth change? The other explanations and examples to be presented include three-dimensional animations of the Paleoproterozoic and Neoproterozoic Earth, and the kinematics and dynamics of the tectonic plates such as the Atlantic and Pacific plates.
DE: 1213 Earth's interior: dynamics (1507, 7207, 7208, 8115, 8120)
DE: 8115 Core processes (1213, 1507)
DE: 8120 Dynamics of lithosphere and mantle: general (1213)
DE: 8121 Dynamics: convection currents, and mantle plumes
DE: 8125 Evolution of the Earth (0325)
SC: Union [U]
MN: 2007 Fall Meeting