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Metamorphic series

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Metamorphic series include the Barrovian and Buchan series of metamorphic rocks. George Barrow... Mr Buchan...[1]. These are also called metamorphic facies series. A metamorphic facies series is a sequence of metamorphic facies which plot in a temperature-pressure diagram along a line, and this line represents a certain geothermal gradient. They are not to be confused with metamorphic zones, as these are defined as a region on a geological map where the pressure-temperature conditions for an index mineral (a mineral that indicates the approximate metamorphic grade of a rock, see https://en.wikipedia.org/wiki/Index_mineral) were appropriate for these minerals to form. [2].
[3] See https://en.wikipedia.org/wiki/Metamorphic_zone

References

  1. ^ "Regional metamorphism". Tulane University. Retrieved 23 August 2019.
  2. ^ Philpotts,A. and Klein,C. Earth Materials, 2013, Cambridge University Press: New York. Pages 398-399
  3. ^ Marshak, S.2015.Earth: Portrait of a Planet', page 245-249'