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transition zone |
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transition zone [tran′zish·ən ‚zōn] (fluid mechanics) Those conditions of fluid flow in which the nature of the flow is changing from laminar to turbulent. (geology) A region within the upper mantle bordering the lower mantle, at a depth of 246-600 miles (410-1000 kilometers), characterized by a rapid increase in density of about 20% and an increase in seismic wave velocities. A region within the outer core, transitional to the inner core. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| It is reportedly the only asymmetrical kneading block on the market, and it eliminates the need for a transition zone. Seismic evidence collected from earthquake waves traveling through the mantle indicate that a transition zone beneath the asthenosphere, between depths of 400 and 670 km, separates the upper mantle from the lower mantle. Creston's objectives are three proven zones of interest," said McCulliss, "the transition zone between the Wasatch and Green River, the traditional Green River oil zone, and the Upper Green River gas zone. |
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