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      The petrologic case for a dry lower crust

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      Journal of Geophysical Research: Solid Earth
      American Geophysical Union (AGU)

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          Water in Earth's Mantle: The Role of Nominally Anhydrous Minerals.

          Most minerals of Earth's upper mantle contain small amounts of hydrogen, structurally bound as hydroxyl (OH). The OH concentration in each mineral species is variable, in some cases reflecting the geological environment of mineral formation. Of the major mantle minerals, pyroxenes are the most hydrous, typically containing approximately 200 to 500 parts per million H(2)O by weight, and probably dominate the water budget and hydrogen geochemistry of mantle rocks that do not contain a hydrous phase. Garnets and olivines commonly contain approximately 1 to 50 parts per million. Nominally anhydrous minerals constitute a significant reservoir for mantle hydrogen, possibly accommodating all water in the depleted mantle and providing a possible mechanism to recycle water from Earth's surface into the deep mantle.
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            The influence of erosion upon the mineral fades of rocks from different metamorphic environments

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              Permeabilities, interfacial areas and curvatures of partially molten systems: Results of numerical computations of equilibrium microstructures

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                Author and article information

                Journal
                Journal of Geophysical Research: Solid Earth
                J. Geophys. Res.
                American Geophysical Union (AGU)
                01480227
                June 10 1997
                June 10 1997
                : 102
                : B6
                : 12173-12185
                Article
                10.1029/97JB00508
                3542021a-af71-44f5-802a-91fabfa36478
                © 1997

                http://doi.wiley.com/10.1002/tdm_license_1.1

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