Mantle hydration along outer-rise faults inferred from serpentinite permeability

Mass of the Galaxy Inferred from Outer Rotation Curve

Using an outer rotation curve of the Galaxy, we explore the galactic constants and the mass of the Galaxy. We show that Θ0 of 200 km s −1 is more favorable than the IAU standard value of 220 km s, and also show that if Θ0 is smaller than 207 km s −1 the rotation curve beyond 2R0 is declining in Keplerian fashion. In the case of Θ0= 200 km s −1 and R0= 7.6 kpc, the total mass and the extent of t...

Alterations in outer membrane permeability.

INTRODucnON ... ......... ........... .. . .. ........ ... ........ . .. .. ... .. ... . ......... .. ........ . 238 Structure oj the Cell Envelope.................................................................. 238 Uptake Arross the Outer Membrane.......................................................... 239 Intrinsic,Dejects in Outer Membrane Permeability in So.me Bacteria . .... ..... .. ....

Possible density segregation of subducted oceanic lithosphere along a weak serpentinite layer and implications for compositional stratification of the Earth's mantle

There is growing evidence that the top part of the oceanic mantle is pervasively serpentinized prior to subduction. Because the interior of a subducting slab heats up slowly, the serpentinized layer can be preserved for tens of Myr, thereby forming a weak zone that allows for mechanical decoupling between the oceanic crust and underlying lithospheric mantle. Once the crust is eclogitized, a she...

On the extent of mantle hydration caused by plate bending

Mantle hydration and Cl-rich fluids in the subduction forearc

In the forearc region, aqueous fluids are released from the subducting slab at a rate depending on its thermal state. Escaping fluids tend to rise vertically unless they meet permeability barriers such as the deformed plate interface or the Moho of the overriding plate. Channeling of fluids along the plate interface and Moho may result in fluid overpressure in the oceanic crust, precipitation o...