Young high-temperature granulites from the base of the crust in central Mexico

@article{Hayob1989YoungHG,
  title={Young high-temperature granulites from the base of the crust in central Mexico},
  author={J. L. Hayob and Eric J. Essene and Jean Charles Ruiz and F. Ortega-Guti{\'e}rrez and J. J. Aranda-G{\'o}mez},
  journal={Nature},
  year={1989},
  volume={342},
  pages={265-268}
}
CHARACTERIZATION of the lower continental crust is essential to understanding processes of crustal formation and evolution. Many workers have concluded that the lower crust is composed of granulite-facies rocks (see, for example, refs 1, 2), but many exposed granulite-facies terranes seem to have mid-crustal rather than lower-crustal origins3–5. Here we present new data from direct samples of the lower continental crust, in the form of metapelitic rock fragments brought to the surface by… CONTINUE READING