Results 151 to 160 of about 2,155,550 (190)

Transport Properties of Magmas: Diffusion and Rheology

Elements, 2006
The transport of magmas in the Earth is a phenomenon of first-order importance to the physical, chemical, and climatological evolution of our planet. Volcanism, in particular, can have dramatic impact on human lives, not only as an immediate environmental hazard but also as a longer-term influence on climate.
openaire   +1 more source

Perspectives on the source, segregation and transport of granitoid magmas

Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 1988
ABSTRACTThe pursuit of a comprehensive theory for the origin and evolution of granitoids is hindered by our incomplete understanding of the nature of the source and the mechanisms by which the magma is segregated and transported. This paper is a collection of three largely independent and necessarily incomplete perspectives on these outstanding issues.
Calvin F. Miller, E. Bruce Watson, T. Mark Harrison   +2 more
openaire   +1 more source

Convective transport in crustal magma bodies

Journal of Volcanology and Geothermal Research, 1983
Abstract Convective transport in enclosures is reviewed as it relates to magma bodies. Convective effects are discussed that are peculiar to the rheological character of magma. The large Prandtl number of magma delays onset of turbulence and causes velocity disturbances to extend far beyond the thermal boundary layer and well into the fluid core.
openaire   +1 more source

A mathematical model of magma transport in the asthenosphere

Geophysical & Astrophysical Fluid Dynamics, 1985
Abstract We present a mathematical model for the flow of a partial melt through its solid phase. The model is based on the conservation laws of two-phase flow, which reduce to a generalization of porous flow in a permeable medium, when the solid matrix deforms very slowly.
openaire   +1 more source

The transport and eruption of magma from volcanoes: A review

Contemporary Physics, 2002
Volcanic eruptions are amongst the most spectacular of natural phenomena. During the past few years, our knowledge of the basic physics and chemistry of magmatic and volcanic processes has been transformed. We now understand how rocks melt and how the resulting magmas migrate upward and eventually accumulate to form magma chambers. We can model a range
Pinkerton, Harry, Wilson, Lionel, Macdonald, Ray   +2 more
openaire   +1 more source

Metal transport in magma

Goldschmidt2023 abstracts, 2023
Kim Berlo, Hugh Tuffen
openaire   +1 more source

Experimental methods for determination of transport properties of magma

Physics and Chemistry of the Earth, 1981
Abstract The experimental techniques for measuring at high temperatures and pressures the transport properties of magma, a concentrated solution of silicates, are at a primitive stage. The fluxes of energy, mass, and momentum are usually interrelated in nature and are difficult to isolate in the laboratory. The measurement of thermal conductivity, a
openaire   +1 more source

Time-dependent Soret transport: Applications to brine and magma

Chemical Geology, 1992
Abstract We have developed a numerical model which simulates the coupling of a compositional field to a time-dependent temperature field and have applied it to natural salt and magma systems. An implicit central difference numerical approach is used in which the coupling of mass and heat is taken into account by chemical and thermal diffusion mass ...
Randall T. Cygan, Charles R. Carrigan
openaire   +1 more source

The interplay between deformation and magma transport in southeast Iceland

2023
"This work was supported by a student bursary provided by the University of St Andrews. Grant/Scholarships provided by NERC Isotope Geosciences Laboratories, the Geological Society of London and CASP were awarded during this study ...
openaire   +3 more sources

Magma transport at Hawaii: Inferences based on igneous thermobarometry

Geology, 1997
Pyroxene + liquid equilibrium in Hawaiian lavas occurs at a range of pressures for each volcano. Ranges are systematic and may be related to the stage of development of the magma conduit system. Kilauea, which is in its shield-building phase, yields relatively shallow storage estimates.
openaire   +1 more source