Reply to comment by Compagnoni et al. on 'First finding of continental deep subduction in the Sesia Zone of Western Alps and implications for subduction dynamics'
2024
Response to Comments on Coesite Findings in the Sesia Zone
publication
Evidence: moderate
Author Information
Author(s): Chen Yi-Xiang, Zhou Kun, He Qiang, Zheng Yong-Fei, Schertl Hans-Peter, Chen Kun
Primary Institution: State Key Laboratory of Lithospheric and Environmental Co-evolution, University of Science and Technology of China, China
Conclusion
The study provides compelling evidence for the presence of coesite in the metamorphic garnet of the Sesia zone, addressing critiques regarding its identification.
Supporting Evidence
- The occurrence of coesite in metamorphic rocks indicates deep subduction processes.
- Raman spectroscopy was used to analyze the mineral compositions.
- Concerns about contamination were addressed by demonstrating the absence of known polishing materials.
- Comparative analysis of Raman spectra refuted claims of overlapping peaks affecting coesite identification.
- Future studies are needed to explore the unusual occurrence of coesite in the studied samples.
Takeaway
The researchers found a rare mineral called coesite in rocks from the Sesia zone, which helps us understand how these rocks formed deep underground.
Digital Object Identifier (DOI)
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