Rise of starting plumes through mantle of temperature-, pressure-, and stress-dependent viscosity
نویسندگان
چکیده
منابع مشابه
Shape of thermal plumes in a compressible mantle with depth-dependent viscosity
[1] The mantle plume model has been invoked to explain the formation of large igneous provinces (LIP) and associated age-progressive hotspot tracks. The shape of mantle plumes should be significantly altered by physical properties of the mantle and will influence how plume theory is used to interpret observational constraints. Based on theoretical analysis and numerical modeling, we explore the...
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15 صفحه اولRole of temperature-dependent viscosity and surface plates in spherical shell models of mantle convection
Layered viscosity, temperature-dependent viscosity, and surface plates have an important effect on the scale and morphology of structure in spherical models of mantle convection. We find that long-wavelength structures can be produced either by a layered viscosity with a weak upper mantle or temperature-dependent viscosity even in the absence of surface plates, corroborating earlier studies. Ho...
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We have developed a finite element model of convection in a spherical, axisymmetric shell that we use to simulate upwelling thermal plumes in the mantle. The finite element method provides the flexibility to include realistic properties such as temperature-dependent viscosity, the focus of this paper. We used this model to investigate the effect of temperature-dependent viscosity on the structu...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Solid Earth
سال: 1997
ISSN: 0148-0227
DOI: 10.1029/97jb00266