Articles | Volume 35, issue 6
https://doi.org/10.5194/ejm-35-987-2023
https://doi.org/10.5194/ejm-35-987-2023
Research article
 | 
16 Nov 2023
Research article |  | 16 Nov 2023

Contact metamorphic reactions and fluid–rock interactions related to magmatic sill intrusion in the Guaymas Basin

Alban Cheviet, Martine Buatier, Flavien Choulet, Christophe Galerne, Armelle Riboulleau, Ivano Aiello, Kathleen M. Marsaglia, and Tobias W. Höfig

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Short summary
The present study is based on sample chemical and mineralogical analyses of oceanic sediment and rock that were collected in the Guaymas Basin during IODP Expedition 385. The contact aureoles are not only affected by maturation of organic matter and dehydration reaction, but mineralogical reactions concern all sediment components (silicates, sulfides, carbonates, organic matter) and can be the result of the combination of different stages of alteration during and after the sill emplacement.