Evolution of the continental crust

Article Abstract:

The continental crust is found to have had a key role in the evolution of the planet and hence new techniques are required to model the differential and evolution of the continental crust and to see back through time to the process involved in its generation. The combination of the models for the differentiation of the crust and the residence time of elements in the upper crust has indicated that the average rate of crust formation is some 2-3 times higher than most previous estimates.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code:

Metal saturation in the upper mantle

Article Abstract:

High-pressure experiments are used for showing that large parts of the asthenosphere are likely to be metal-saturated in the earth's uppermost mantle. The results have shown that the oxidized nature of the upper mantle cannot be regarded as just being the representative for the Earth's upper mantle as a whole and instead that oxidation is a shallow phenomenon restricted to an upper veneer only about 250 km in thickness.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code:

The mantle deformed

Article Abstract:

A whole new understanding of the planet's dynamics emerged with the discovery of plate tectonics and mantle convection. Matter can flow within the seemingly solid regions of the deep Earth, and these processes often control the surface of dynamics.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code: