Herzberg, C., P. D. Asimow, N. Arndt Y. Niu, C. M. Lesher, J. G. Fitton, M. J. Cheadle, A. D. Saunders (2007). "Temperatures in ambient mantle and plumes: Constraints from basalts, picrites, and komatiites." Geochemistry, Geophysics, Geosystems 8: Q02006.

 The temperature of ambient mantle and the existence of any possible thermal anomalies are fundamental properties of the Earth. Although they cannot be directly measured, they can be inferred from their effects on both seismic wave velocities and the compositions of magmas that are produced at oceanic ridges, islands, and plateaus; hot mantle slows down seismic waves and increases the MgO contents of primary magmas. MORB production from ambient mantle is critical in this discussion because it provides the background reference frame for understanding all thermal anomalies. However, the extraction of reliable temperature information requires that a petrological analysis be conducted on a large number of glass samples. This would not have been possible without PetDB.

 

Herzberg, C., P. D. Asimow, N. Arndt Y. Niu, C. M. Lesher, J. G. Fitton, M. J. Cheadle, A. D. Saunders (2007). "Temperatures in ambient mantle and plumes: Constraints from basalts, picrites, and komatiites." Geochemistry, Geophysics, Geosystems 8: Q02006.doi:10.1029/2006GC001390

 

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