Always private
DuckDuckGo never tracks your searches.
Learn More
You can hide this reminder in Search Settings
All regions
Argentina
Australia
Austria
Belgium (fr)
Belgium (nl)
Brazil
Bulgaria
Canada (en)
Canada (fr)
Catalonia
Chile
China
Colombia
Croatia
Czech Republic
Denmark
Estonia
Finland
France
Germany
Greece
Hong Kong
Hungary
Iceland
India (en)
Indonesia (en)
Ireland
Israel (en)
Italy
Japan
Korea
Latvia
Lithuania
Malaysia (en)
Mexico
Netherlands
New Zealand
Norway
Pakistan (en)
Peru
Philippines (en)
Poland
Portugal
Romania
Russia
Saudi Arabia
Singapore
Slovakia
Slovenia
South Africa
Spain (ca)
Spain (es)
Sweden
Switzerland (de)
Switzerland (fr)
Taiwan
Thailand (en)
Turkey
Ukraine
United Kingdom
US (English)
US (Spanish)
Vietnam (en)
Safe search: moderate
Strict
Moderate
Off
Any time
Any time
Past day
Past week
Past month
Past year
  1. sciencedirect.com

    Gravity-driven compaction models of melt migration provide useful first-order insights into the problem of melt extraction. In these models a column of partially molten rock with an underlying impermeable base compacts due to density differences between melt and solid. Figure 2.1 shows the stages of this compaction process. At the base of the ...
    Author:Martha J. Daines, Matej PecPublished:2015
    • Migration of Melt

      The driving force for melt migration can be related to differences in interfacial energies, the buoyancy of melt relative to residual solids or to applied deviatoric stress. The rate of melt migration is controlled by the magnitude of the driving force, the permeability of the melt network, the viscosity of the melt, and the strength of the ...

    • An Experimental Study of The Effects of Surface Tension in Homogenizing Perturbations in Melt Fraction

      Interfacial tension is a critical factor in determining the distribution of melt in a multiphase aggregate. Melt distribution and grain-scale pore geometry (controlled by surface energies at grain and phase boundaries) are primary controls on melt interconnectivity and permeability (e.g., Wark and Watson, 1998), which in turn control the mechanisms and rates of melt transport in the lower ...

    • Contrasting Viscoelastic Behavior of Melt-Free and Melt-Bearing Olivine

      Melt-free and basaltic (complex alumino-silicate) melt-bearing specimens of fine-grained polycrystalline olivine (Mg 0.9 Fe 0.1) 2 SiO 4, tested at high temperature and low frequency in torsional forced oscillation and microcreep, display markedly different behavior.For the melt-bearing materials, superimposed upon the high-temperature background is a dissipation peak whose height varies ...

    • Experimental and Theoretical Constraints on Melt Distribution in Crustal Sources

      In the case of an ideal source (i.e. a monomineralic, partially molten rock with single-valued solid-liquid and solid-solid interfacial energies, that is subject to hydrostatic stress) this equilibrium distribution is characterized by (Beere, 1975; Bulau et al., 1979; von Bargen and Waff, 1986; Hunter, 1987): (1) a constant dihedral angle O (or ...

  2. mpec.scripts.mit.edu

    This set-up allows us to flow a reactive melt through a partially molten rock at various rates. The ratio of the flow velocity to the reaction timescale can be therefore controlled and a rich behavior is observed. ... Migration of melt. in Encyclopedia of Volcanoes, eds. Sigurdsson et al. 2nd ed., pp 49-64 . Find Us. Address 77 Massachusetts ...
  3. sciencedirect.com

    The gravitational force responsible for the downward migration of the denser immiscible sulfide phase is proportional to the density ... it is a measure of the pressure discontinuity which exists at the interface of the two ... The generation and compaction of partially molten rock. J. Petrol., 25 (1984), pp. 713-765. Crossref View in Scopus ...
    Author:Hye-Yoon Chung, James E. MungallPublished:2009
  4. sciencedirect.com

    Recent reviews on the behavior of partially molten rocks emphasize the role of two thresholds during the geometrical CorrespoOce to: O. Vanderhaeghe evolution of a rock undergoing partial melting (Brown et al., 214 Effective viscosity Pa.s 1019 10 17 is 10 1013 11 10 9 10 107 5 10 O. Vanderhaeghe: Melt Segregation, Pervasive Melt Migration and ...
    Author:O. VanderhaeghePublished:2001
  5. oceanservice.noaa.gov

    Tectonic shift is the movement of the plates that make up Earth's crust. ... uses a variety of techniques to measure the planet's rate of rotation, its plate motion, and the ways that gravity affects certain scientific processes. Learn more: ... molten rock of Earth's mantle and fit snugly against one another. The heat from radioactive ...
  6. ldeo.columbia.edu

    partially molten sample is determined by the per-meability, k, the melt viscosity, m, the bulk viscos-ity, l, and the shear viscosity, h, of the partially molten rock as expressed by the relation [McKen-zie, 1984; Scott and Stevenson, 1986] d c ¼ ½k½lþðÞ4=3 h =m 1=2: ð1Þ We use the simplified form d c =[k(4/3)h]/m]1/2
  7. For most nongeologists, the idea of liquids moving through solid rock is a strange one. But liquids of one sort or another are thought to be ubiquitous in the Earth. There are the familiar hydrothermal fluids, dominated by water, which occur in the very shallow crust (the Old Faithful geyser in Yellowstone National Park in the United States is a dramatic example). But in the deeper parts of ...
  8. geodesy.noaa.gov

    Measuring the motion of tectonic plates is part of the science of geodesy. To define the shape of the Earth, NOAA's National Geodetic Survey, part of the National Ocean Service, uses a variety of techniques to measure the planet's rate of rotation, its plate motion, and the ways that gravity affects certain scientific processes. Learn more
  9. pubs.geoscienceworld.org

    Melt migration and melt-rock reactions in the deforming Earth's upper mantle: Experiments at high pressure and temperature Vincent Soustelle; ... Reaction infiltration instabilities in experiments on partially molten mantle rocks Geology. Experimental formation of pyroxenite veins by reactions between olivine and Si, Al, Ca, Na, and Cl-rich ...
  10. publish.illinois.edu

    Holmes believed that radioactive decay heated the earth's mantle, which caused it to rise; and then as molten rock cooled and became denser, it sank back deeper into the mantle (Mathez, 1). This rise and fall of magma produces convection currents, which Holmes believed to have dragged the continents on the surface along with them (Mathez, 1).

    Can’t find what you’re looking for?

    Help us improve DuckDuckGo searches with your feedback

Custom date rangeX