In this manuscript we review experimental constraints for the viscosity of the upper mantle.
We first analyze experimental data to provide a critical review of flow law parameters for …

Melt extraction from the partially molten mantle is among the fundamental processes
shaping the solid Earth today and over geological time. A diversity of properties and …

The volcanoes that lie along the Earth's tectonic boundaries are fed by melt generated in the
mantle. How this melt is extracted and focused to the volcanoes, however, remains an …

We demonstrate that deformation of partially molten ductile rocks can produce melt
segregation by two‐phase flow. In simple shear experiments on several melt‐rock systems …

Melt extraction from the Earth's mantle requires some form of channelized flow to produce
the observed disequilibrium between the crust-forming lavas and their mantle sources. In …

The torsional forced oscillation tests of melt‐bearing olivine aggregates reported by Jackson
et al.[2004] consistently show a peak in attenuation that is absent from melt‐free aggregates …

Melt percolation in mantle rocks is currently poorly constrained, especially at low melt
fractions. At mid-ocean ridges, for example, geochemical and geophysical observations …

The evolution of melt segregation in deforming partially molten olivine-rich rocks has been
studied in a series of laboratory experiments. During deformation, melt segregates into …

We propose that a mechanical flow channeling instability, which arises because of rock
weakening at high fluid pressure, facilitates segregation and transport of asthenospheric …

Magmatic production on Earth is dominated by asthenospheric melts of basaltic composition
that have mostly erupted at mid-ocean ridges. The timescale for segregation and transport of …