Journal of Geology & Mining(JGM)

Korzhinskii Institute of Experimental Mineralogy Russian Academy of Sciences, Russia

Publications

• Research Article   
  Chemical Heterogeneity of Garnet in Eclogite-Blueschist Complexes
  Author(s): V. V. Fedkin* and L. S. Kotova
  
  In mafic eclogite-blueschist complexes, the unique properties of garnet were studied - to preserve its composition under conditions of a changing metamorphism regime and to record these changes in the process of their development. In the key paragenesis with omphacite, plagioclase, and quartz, garnet, within the limited space of one sample and even one grain, is able to record multidirectional and opposite trends in changes in metamorphism parameters. The studies were carried out on two known complexes of mafic eclogites, similar in origin, but contrastingly different in terms of formation conditions: the Maksyutov (Southern Urals) and Atbashi (Southern Tien Shan) eclogite-blueschist complexes. For the deeper Maksyutov complex, a 4-stage RT trend of its retrograde development from the stability field of ultrahigh-pressure (SHB) minerals (diamond and coesite) to low-temperature diaphth.. Read More»
  

  Abstract HTML PDF