A reappraisal of episodic burial metamorphism in the Andes of central Chile

@article{Robinson2004ARO,
  title={A reappraisal of episodic burial metamorphism in the Andes of central Chile},
  author={Douglas Robinson and Richard E. Bevins and Luis Aguirre and Mario Vergara},
  journal={Contributions to Mineralogy and Petrology},
  year={2004},
  volume={146},
  pages={513-528}
}
The Jurassic to Miocene sequences of the central Andes, east of Santiago, reputedly show repeated cycles of episodic sub-greenschist facies, burial metamorphism that are identified by sharp breaks in metamorphic grade at major stratigraphic boundaries. This paper presents the first detailed petrochemical analysis of these low-grade metamorphic sequences by examining the progressive development of secondary minerals, reaction progress in mafic phyllosilicates, and topological variations in the… 
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Burial metamorphism of regional extent throughout Mesozoic to Cenozoic sequences in the Andean Mountain belt has been attributed previously to a unique model of metamorphic development, involving
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The Upper Cretaceous and Tertiary volcanic sequences in the Chilean Andes are affected by burial metamorphism. For example, in central Chile (between 32°30’and 35°S), the Abanico Formation, a folded
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Stratigraphical-structural units separated by regional unconformities in the Andes of Peru and Chile, display a pattern of low grade burial metamorphism. Each stratigraphical-structural unit shows a
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