Temperatures in ambient mantle and plumes: Constraints from basalts, picrites, and komatiites

  title={Temperatures in ambient mantle and plumes: Constraints from basalts, picrites, and komatiites},
  author={Claude T. Herzberg and Paul D. Asimow and Nicholas T. Arndt and Y. Niu and C. Michael Lesher and J. Godfrey Fitton and Michael J. Cheadle and Ad D. Saunders},
Several methods have been developed to assess the thermal state of the mantle below oceanic ridges, islands, and plateaus, on the basis of the petrology and geochemistry of erupted lavas. One leads to the conclusion that mantle potential temperature (i.e., TP) of ambient mantle below oceanic ridges is 1430°C, the same as Hawaii. Another has ridges with a large range in ambient mantle potential temperature (i.e., TP = 1300–1570°C), comparable in some cases to hot spots (Klein and Langmuir, 1987… 

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